def scatter(self, x, y, s, ax=None, fancy=False, **kwargs): """ takes data coordinate x, y and plot them to a data coordinate axes, s is the radius in data units. When fancy is True, apply a radient filter so that the edge is blent into the background; better with marker='o' or marker='+'. """ X, Y, S = numpy.asarray([x, y, s]) if ax is None: ax=self.default_axes def filter(image, dpi): # this is problematic if the marker is clipped. if image.shape[0] <=1 and image.shape[1] <=1: return image xgrad = 1.0 \ - numpy.fabs(numpy.linspace(0, 2, image.shape[0], endpoint=True) - 1.0) ygrad = 1.0 \ - numpy.fabs(numpy.linspace(0, 2, image.shape[1], endpoint=True) - 1.0) image[..., 3] *= xgrad[:, None] ** 0.5 image[..., 3] *= ygrad[None, :] ** 0.5 return image, 0, 0 marker = kwargs.pop('marker', 'x') verts = kwargs.pop('verts', None) # to be API compatible if marker is None and not (verts is None): marker = (verts, 0) verts = None objs = [] color = kwargs.pop('color', None) edgecolor = kwargs.pop('edgecolor', None) linewidth = kwargs.pop('linewidth', kwargs.pop('lw', None)) marker_obj = MarkerStyle(marker) if not marker_obj.is_filled(): edgecolor = color for x,y,r in numpy.nditer([X, Y, S], flags=['zerosize_ok']): path = marker_obj.get_path().transformed( marker_obj.get_transform().scale(r).translate(x, y)) obj = PathPatch( path, facecolor = color, edgecolor = edgecolor, linewidth = linewidth, transform = ax.transData, ) obj.set_alpha(1.0) if fancy: obj.set_agg_filter(filter) obj.rasterized = True objs += [obj] ax.add_artist(obj) ax.autoscale_view() return objs
def _html_args(self): transform = self.line.get_transform() - self.ax.transData data = transform.transform(self.line.get_xydata()).tolist() markerstyle = MarkerStyle(self.line.get_marker()) markersize = self.line.get_markersize() markerpath = path_data(markerstyle.get_path(), (markerstyle.get_transform() + Affine2D().scale(markersize, -markersize))) return dict(lineid=self.lineid, data=json.dumps(data), markerpath=json.dumps(markerpath))
def get_marker_style(line): """Get the style dictionary for matplotlib marker objects""" style = {} style["alpha"] = line.get_alpha() if style["alpha"] is None: style["alpha"] = 1 style["facecolor"] = color_to_hex(line.get_markerfacecolor()) style["edgecolor"] = color_to_hex(line.get_markeredgecolor()) style["edgewidth"] = line.get_markeredgewidth() style["marker"] = line.get_marker() markerstyle = MarkerStyle(line.get_marker()) markersize = line.get_markersize() markertransform = markerstyle.get_transform() + Affine2D().scale(markersize, -markersize) style["markerpath"] = SVG_path(markerstyle.get_path(), markertransform) style["markersize"] = markersize style["zorder"] = line.get_zorder() return style
def get_marker_style(line): """Get the style dictionary for matplotlib marker objects""" style = {} style['alpha'] = line.get_alpha() if style['alpha'] is None: style['alpha'] = 1 style['facecolor'] = export_color(line.get_markerfacecolor()) style['edgecolor'] = export_color(line.get_markeredgecolor()) style['edgewidth'] = line.get_markeredgewidth() style['marker'] = line.get_marker() markerstyle = MarkerStyle(line.get_marker()) markersize = line.get_markersize() markertransform = (markerstyle.get_transform() + Affine2D().scale(markersize, -markersize)) style['markerpath'] = SVG_path(markerstyle.get_path(), markertransform) style['markersize'] = markersize style['zorder'] = line.get_zorder() return style
def get_line_style(line): """Get the style dictionary for matplotlib Line2D objects.""" style = {} style['alpha'] = line.get_alpha() if style['alpha'] is None: style['alpha'] = 1 style['color'] = color_to_hex(line.get_color()) style['linewidth'] = line.get_linewidth() style['dasharray'] = get_dasharray(line) style['facecolor'] = color_to_hex(line.get_markerfacecolor()) style['edgecolor'] = color_to_hex(line.get_markeredgecolor()) style['edgewidth'] = line.get_markeredgewidth() style['marker'] = line.get_marker() markerstyle = MarkerStyle(line.get_marker()) markersize = line.get_markersize() markertransform = (markerstyle.get_transform() + Affine2D().scale(markersize, -markersize)) style['markerpath'] = SVG_path(markerstyle.get_path(), markertransform) style['markersize'] = markersize style['zorder'] = line.get_zorder() return style
def update_from(self, other): "copy properties from other to self" Artist.update_from(self, other) self._linestyle = other._linestyle self._linewidth = other._linewidth self._color = other._color self._markersize = other._markersize self._markerfacecolor = other._markerfacecolor self._markerfacecoloralt = other._markerfacecoloralt self._markeredgecolor = other._markeredgecolor self._markeredgewidth = other._markeredgewidth self._dashSeq = other._dashSeq self._dashcapstyle = other._dashcapstyle self._dashjoinstyle = other._dashjoinstyle self._solidcapstyle = other._solidcapstyle self._solidjoinstyle = other._solidjoinstyle self._linestyle = other._linestyle self._marker = MarkerStyle(other._marker.get_marker(), other._marker.get_fillstyle()) self._drawstyle = other._drawstyle
# Now go through each set of y values final_y_values = list() final_x_values = list() legend_needed = True line_label = legend_list[i] marker_list = marker_str.split(',') if len(marker_list) <= i: final_marker = self.ATTR_MARKER_DEFAULT else: final_marker = marker_list[i].strip() # check marker marker_style = MarkerStyle() try: marker_style.set_marker(final_marker) except Exception,e: final_marker = '' # line width line_width_list = line_width_str.split(',') if len(line_width_list) > i: final_line_width = line_width_list[i] else: final_line_width = '1' try: final_line_width = float(final_line_width) except Exception, e:
vectors = pd.read_csv('vectors.csv') types = vectors['Attribute'] x = vectors['V1'] y = vectors['V2'] fig, ax = plt.subplots() ax.set_title('2-dimensional metadata embeddings', fontsize=18) ax.set_xlabel('Feature 1', fontsize=14) ax.set_ylabel('Feature 2', fontsize=12) ax.scatter(x, y, color='r', alpha=0.7, marker=MarkerStyle(marker='x', fillstyle=None)) for i, txt in enumerate(types): ax.annotate(txt, (x[i], y[i]), fontsize=6) # inset axes.... axins = ax.inset_axes([0.7, 0.6, 0.4, 0.5]) axins.scatter(x, y, color='r', marker=MarkerStyle(marker='x', fillstyle=None)) for i, txt in enumerate(types): axins.annotate(txt, (x[i], y[i]), fontsize=8) # sub region of the original image x1, x2, y1, y2 = -0.3, -0.1, -0.02, 0.23 axins.set_xlim(x1, x2) axins.set_ylim(y1, y2) axins.set_xticklabels('') axins.set_yticklabels('')
class Line2D(Artist): """ A line - the line can have both a solid linestyle connecting all the vertices, and a marker at each vertex. Additionally, the drawing of the solid line is influenced by the drawstyle, e.g., one can create "stepped" lines in various styles. """ lineStyles = _lineStyles = { # hidden names deprecated '-': '_draw_solid', '--': '_draw_dashed', '-.': '_draw_dash_dot', ':': '_draw_dotted', 'None': '_draw_nothing', ' ': '_draw_nothing', '': '_draw_nothing', } _drawStyles_l = { 'default': '_draw_lines', 'steps-mid': '_draw_steps_mid', 'steps-pre': '_draw_steps_pre', 'steps-post': '_draw_steps_post', } _drawStyles_s = { 'steps': '_draw_steps_pre', } drawStyles = {} drawStyles.update(_drawStyles_l) drawStyles.update(_drawStyles_s) # Need a list ordered with long names first: drawStyleKeys = (list(six.iterkeys(_drawStyles_l)) + list(six.iterkeys(_drawStyles_s))) # Referenced here to maintain API. These are defined in # MarkerStyle markers = MarkerStyle.markers filled_markers = MarkerStyle.filled_markers fillStyles = MarkerStyle.fillstyles zorder = 2 validCap = ('butt', 'round', 'projecting') validJoin = ('miter', 'round', 'bevel') def __str__(self): if self._label != "": return "Line2D(%s)" % (self._label) elif self._x is None: return "Line2D()" elif len(self._x) > 3: return "Line2D((%g,%g),(%g,%g),...,(%g,%g))"\ % (self._x[0], self._y[0], self._x[0], self._y[0], self._x[-1], self._y[-1]) else: return "Line2D(%s)"\ % (",".join(["(%g,%g)" % (x, y) for x, y in zip(self._x, self._y)])) def __init__(self, xdata, ydata, linewidth=None, # all Nones default to rc linestyle=None, color=None, marker=None, markersize=None, markeredgewidth=None, markeredgecolor=None, markerfacecolor=None, markerfacecoloralt='none', fillstyle=None, antialiased=None, dash_capstyle=None, solid_capstyle=None, dash_joinstyle=None, solid_joinstyle=None, pickradius=5, drawstyle=None, markevery=None, **kwargs ): """ Create a :class:`~matplotlib.lines.Line2D` instance with *x* and *y* data in sequences *xdata*, *ydata*. The kwargs are :class:`~matplotlib.lines.Line2D` properties: %(Line2D)s See :meth:`set_linestyle` for a decription of the line styles, :meth:`set_marker` for a description of the markers, and :meth:`set_drawstyle` for a description of the draw styles. """ Artist.__init__(self) #convert sequences to numpy arrays if not iterable(xdata): raise RuntimeError('xdata must be a sequence') if not iterable(ydata): raise RuntimeError('ydata must be a sequence') if linewidth is None: linewidth = rcParams['lines.linewidth'] if linestyle is None: linestyle = rcParams['lines.linestyle'] if marker is None: marker = rcParams['lines.marker'] if color is None: color = rcParams['lines.color'] if markersize is None: markersize = rcParams['lines.markersize'] if antialiased is None: antialiased = rcParams['lines.antialiased'] if dash_capstyle is None: dash_capstyle = rcParams['lines.dash_capstyle'] if dash_joinstyle is None: dash_joinstyle = rcParams['lines.dash_joinstyle'] if solid_capstyle is None: solid_capstyle = rcParams['lines.solid_capstyle'] if solid_joinstyle is None: solid_joinstyle = rcParams['lines.solid_joinstyle'] if drawstyle is None: drawstyle = 'default' self._dashcapstyle = None self._dashjoinstyle = None self._solidjoinstyle = None self._solidcapstyle = None self.set_dash_capstyle(dash_capstyle) self.set_dash_joinstyle(dash_joinstyle) self.set_solid_capstyle(solid_capstyle) self.set_solid_joinstyle(solid_joinstyle) self._linestyles = None self._drawstyle = None self._linewidth = None self._dashSeq = None self._dashOffset = 0 self.set_linestyle(linestyle) self.set_drawstyle(drawstyle) self.set_linewidth(linewidth) self._color = None self.set_color(color) self._marker = MarkerStyle() self.set_marker(marker) self._markevery = None self._markersize = None self._antialiased = None self.set_markevery(markevery) self.set_antialiased(antialiased) self.set_markersize(markersize) self._markeredgecolor = None self._markeredgewidth = None self._markerfacecolor = None self._markerfacecoloralt = None self.set_markerfacecolor(markerfacecolor) self.set_markerfacecoloralt(markerfacecoloralt) self.set_markeredgecolor(markeredgecolor) self.set_markeredgewidth(markeredgewidth) self.set_fillstyle(fillstyle) self.verticalOffset = None # update kwargs before updating data to give the caller a # chance to init axes (and hence unit support) self.update(kwargs) self.pickradius = pickradius self.ind_offset = 0 if is_numlike(self._picker): self.pickradius = self._picker self._xorig = np.asarray([]) self._yorig = np.asarray([]) self._invalidx = True self._invalidy = True self._x = None self._y = None self._xy = None self._path = None self._transformed_path = None self._subslice = False self._x_filled = None # used in subslicing; only x is needed self.set_data(xdata, ydata) def __getstate__(self): state = super(Line2D, self).__getstate__() # _linefunc will be restored on draw time. state.pop('_lineFunc', None) return state def contains(self, mouseevent): """ Test whether the mouse event occurred on the line. The pick radius determines the precision of the location test (usually within five points of the value). Use :meth:`~matplotlib.lines.Line2D.get_pickradius` or :meth:`~matplotlib.lines.Line2D.set_pickradius` to view or modify it. Returns *True* if any values are within the radius along with ``{'ind': pointlist}``, where *pointlist* is the set of points within the radius. TODO: sort returned indices by distance """ if six.callable(self._contains): return self._contains(self, mouseevent) if not is_numlike(self.pickradius): raise ValueError("pick radius should be a distance") # Make sure we have data to plot if self._invalidy or self._invalidx: self.recache() if len(self._xy) == 0: return False, {} # Convert points to pixels transformed_path = self._get_transformed_path() path, affine = transformed_path.get_transformed_path_and_affine() path = affine.transform_path(path) xy = path.vertices xt = xy[:, 0] yt = xy[:, 1] # Convert pick radius from points to pixels if self.figure is None: warnings.warn('no figure set when check if mouse is on line') pixels = self.pickradius else: pixels = self.figure.dpi / 72. * self.pickradius # the math involved in checking for containment (here and inside of # segment_hits) assumes that it is OK to overflow. In case the # application has set the error flags such that an exception is raised # on overflow, we temporarily set the appropriate error flags here and # set them back when we are finished. olderrflags = np.seterr(all='ignore') try: # Check for collision if self._linestyle in ['None', None]: # If no line, return the nearby point(s) d = (xt - mouseevent.x) ** 2 + (yt - mouseevent.y) ** 2 ind, = np.nonzero(np.less_equal(d, pixels ** 2)) else: # If line, return the nearby segment(s) ind = segment_hits(mouseevent.x, mouseevent.y, xt, yt, pixels) finally: np.seterr(**olderrflags) ind += self.ind_offset # Debugging message if False and self._label != '': print("Checking line", self._label, "at", mouseevent.x, mouseevent.y) print('xt', xt) print('yt', yt) #print 'dx,dy', (xt-mouseevent.x)**2., (yt-mouseevent.y)**2. print('ind', ind) # Return the point(s) within radius return len(ind) > 0, dict(ind=ind) def get_pickradius(self): """return the pick radius used for containment tests""" return self.pickradius def set_pickradius(self, d): """Sets the pick radius used for containment tests ACCEPTS: float distance in points """ self.pickradius = d def get_fillstyle(self): """ return the marker fillstyle """ return self._marker.get_fillstyle() def set_fillstyle(self, fs): """ Set the marker fill style; 'full' means fill the whole marker. 'none' means no filling; other options are for half-filled markers. ACCEPTS: ['full' | 'left' | 'right' | 'bottom' | 'top' | 'none'] """ self._marker.set_fillstyle(fs) self.stale = True def set_markevery(self, every): """Set the markevery property to subsample the plot when using markers. e.g., if `every=5`, every 5-th marker will be plotted. ACCEPTS: [None | int | length-2 tuple of int | slice | list/array of int | float | length-2 tuple of float] Parameters ---------- every: None | int | length-2 tuple of int | slice | list/array of int | float | length-2 tuple of float Which markers to plot. - every=None, every point will be plotted. - every=N, every N-th marker will be plotted starting with marker 0. - every=(start, N), every N-th marker, starting at point start, will be plotted. - every=slice(start, end, N), every N-th marker, starting at point start, upto but not including point end, will be plotted. - every=[i, j, m, n], only markers at points i, j, m, and n will be plotted. - every=0.1, (i.e. a float) then markers will be spaced at approximately equal distances along the line; the distance along the line between markers is determined by multiplying the display-coordinate distance of the axes bounding-box diagonal by the value of every. - every=(0.5, 0.1) (i.e. a length-2 tuple of float), the same functionality as every=0.1 is exhibited but the first marker will be 0.5 multiplied by the display-cordinate-diagonal-distance along the line. Notes ----- Setting the markevery property will only show markers at actual data points. When using float arguments to set the markevery property on irregularly spaced data, the markers will likely not appear evenly spaced because the actual data points do not coincide with the theoretical spacing between markers. When using a start offset to specify the first marker, the offset will be from the first data point which may be different from the first the visible data point if the plot is zoomed in. If zooming in on a plot when using float arguments then the actual data points that have markers will change because the distance between markers is always determined from the display-coordinates axes-bounding-box-diagonal regardless of the actual axes data limits. """ if self._markevery != every: self.stale = True self._markevery = every def get_markevery(self): """return the markevery setting""" return self._markevery def set_picker(self, p): """Sets the event picker details for the line. ACCEPTS: float distance in points or callable pick function ``fn(artist, event)`` """ if six.callable(p): self._contains = p else: self.pickradius = p self._picker = p def get_window_extent(self, renderer): bbox = Bbox([[0, 0], [0, 0]]) trans_data_to_xy = self.get_transform().transform bbox.update_from_data_xy(trans_data_to_xy(self.get_xydata()), ignore=True) # correct for marker size, if any if self._marker: ms = (self._markersize / 72.0 * self.figure.dpi) * 0.5 bbox = bbox.padded(ms) return bbox @Artist.axes.setter def axes(self, ax): # call the set method from the base-class property Artist.axes.fset(self, ax) if ax is not None: # connect unit-related callbacks if ax.xaxis is not None: self._xcid = ax.xaxis.callbacks.connect('units', self.recache_always) if ax.yaxis is not None: self._ycid = ax.yaxis.callbacks.connect('units', self.recache_always) def set_data(self, *args): """ Set the x and y data ACCEPTS: 2D array (rows are x, y) or two 1D arrays """ if len(args) == 1: x, y = args[0] else: x, y = args self.set_xdata(x) self.set_ydata(y) def recache_always(self): self.recache(always=True) def recache(self, always=False): if always or self._invalidx: xconv = self.convert_xunits(self._xorig) if ma.isMaskedArray(self._xorig): x = ma.asarray(xconv, np.float_).filled(np.nan) else: x = np.asarray(xconv, np.float_) x = x.ravel() else: x = self._x if always or self._invalidy: yconv = self.convert_yunits(self._yorig) if ma.isMaskedArray(self._yorig): y = ma.asarray(yconv, np.float_).filled(np.nan) else: y = np.asarray(yconv, np.float_) y = y.ravel() else: y = self._y if len(x) == 1 and len(y) > 1: x = x * np.ones(y.shape, np.float_) if len(y) == 1 and len(x) > 1: y = y * np.ones(x.shape, np.float_) if len(x) != len(y): raise RuntimeError('xdata and ydata must be the same length') self._xy = np.empty((len(x), 2), dtype=np.float_) self._xy[:, 0] = x self._xy[:, 1] = y self._x = self._xy[:, 0] # just a view self._y = self._xy[:, 1] # just a view self._subslice = False if (self.axes and len(x) > 1000 and self._is_sorted(x) and self.axes.name == 'rectilinear' and self.axes.get_xscale() == 'linear' and self._markevery is None and self.get_clip_on() is True): self._subslice = True nanmask = np.isnan(x) if nanmask.any(): self._x_filled = self._x.copy() indices = np.arange(len(x)) self._x_filled[nanmask] = np.interp(indices[nanmask], indices[~nanmask], self._x[~nanmask]) else: self._x_filled = self._x if self._path is not None: interpolation_steps = self._path._interpolation_steps else: interpolation_steps = 1 self._path = Path(self._xy, None, interpolation_steps) self._transformed_path = None self._invalidx = False self._invalidy = False def _transform_path(self, subslice=None): """ Puts a TransformedPath instance at self._transformed_path; all invalidation of the transform is then handled by the TransformedPath instance. """ # Masked arrays are now handled by the Path class itself if subslice is not None: _steps = self._path._interpolation_steps _path = Path(self._xy[subslice, :], _interpolation_steps=_steps) else: _path = self._path self._transformed_path = TransformedPath(_path, self.get_transform()) def _get_transformed_path(self): """ Return the :class:`~matplotlib.transforms.TransformedPath` instance of this line. """ if self._transformed_path is None: self._transform_path() return self._transformed_path def set_transform(self, t): """ set the Transformation instance used by this artist ACCEPTS: a :class:`matplotlib.transforms.Transform` instance """ Artist.set_transform(self, t) self._invalidx = True self._invalidy = True self.stale = True def _is_sorted(self, x): """return True if x is sorted in ascending order""" # We don't handle the monotonically decreasing case. return _path.is_sorted(x) @allow_rasterization def draw(self, renderer): """draw the Line with `renderer` unless visibility is False""" if not self.get_visible(): return if self._invalidy or self._invalidx: self.recache() self.ind_offset = 0 # Needed for contains() method. if self._subslice and self.axes: x0, x1 = self.axes.get_xbound() i0, = self._x_filled.searchsorted([x0], 'left') i1, = self._x_filled.searchsorted([x1], 'right') subslice = slice(max(i0 - 1, 0), i1 + 1) self.ind_offset = subslice.start self._transform_path(subslice) transf_path = self._get_transformed_path() if self.get_path_effects(): from matplotlib.patheffects import PathEffectRenderer renderer = PathEffectRenderer(self.get_path_effects(), renderer) renderer.open_group('line2d', self.get_gid()) funcname = self._lineStyles.get(self._linestyle, '_draw_nothing') if funcname != '_draw_nothing': tpath, affine = transf_path.get_transformed_path_and_affine() if len(tpath.vertices): self._lineFunc = getattr(self, funcname) funcname = self.drawStyles.get(self._drawstyle, '_draw_lines') drawFunc = getattr(self, funcname) gc = renderer.new_gc() self._set_gc_clip(gc) ln_color_rgba = self._get_rgba_ln_color() gc.set_foreground(ln_color_rgba, isRGBA=True) gc.set_alpha(ln_color_rgba[3]) gc.set_antialiased(self._antialiased) gc.set_linewidth(self._linewidth) if self.is_dashed(): cap = self._dashcapstyle join = self._dashjoinstyle else: cap = self._solidcapstyle join = self._solidjoinstyle gc.set_joinstyle(join) gc.set_capstyle(cap) gc.set_snap(self.get_snap()) if self.get_sketch_params() is not None: gc.set_sketch_params(*self.get_sketch_params()) drawFunc(renderer, gc, tpath, affine.frozen()) gc.restore() if self._marker and self._markersize > 0: gc = renderer.new_gc() self._set_gc_clip(gc) rgbaFace = self._get_rgba_face() rgbaFaceAlt = self._get_rgba_face(alt=True) edgecolor = self.get_markeredgecolor() if is_string_like(edgecolor) and edgecolor.lower() == 'none': gc.set_linewidth(0) gc.set_foreground(rgbaFace, isRGBA=True) else: gc.set_foreground(edgecolor) gc.set_linewidth(self._markeredgewidth) mec = self._markeredgecolor if (is_string_like(mec) and mec == 'auto' and rgbaFace is not None): gc.set_alpha(rgbaFace[3]) else: gc.set_alpha(self.get_alpha()) marker = self._marker tpath, affine = transf_path.get_transformed_points_and_affine() if len(tpath.vertices): # subsample the markers if markevery is not None markevery = self.get_markevery() if markevery is not None: subsampled = _mark_every_path(markevery, tpath, affine, self.axes.transAxes) else: subsampled = tpath snap = marker.get_snap_threshold() if type(snap) == float: snap = renderer.points_to_pixels(self._markersize) >= snap gc.set_snap(snap) gc.set_joinstyle(marker.get_joinstyle()) gc.set_capstyle(marker.get_capstyle()) marker_path = marker.get_path() marker_trans = marker.get_transform() w = renderer.points_to_pixels(self._markersize) if marker.get_marker() != ',': # Don't scale for pixels, and don't stroke them marker_trans = marker_trans.scale(w) else: gc.set_linewidth(0) renderer.draw_markers(gc, marker_path, marker_trans, subsampled, affine.frozen(), rgbaFace) alt_marker_path = marker.get_alt_path() if alt_marker_path: alt_marker_trans = marker.get_alt_transform() alt_marker_trans = alt_marker_trans.scale(w) if (is_string_like(mec) and mec == 'auto' and rgbaFaceAlt is not None): gc.set_alpha(rgbaFaceAlt[3]) else: gc.set_alpha(self.get_alpha()) renderer.draw_markers( gc, alt_marker_path, alt_marker_trans, subsampled, affine.frozen(), rgbaFaceAlt) gc.restore() renderer.close_group('line2d') self.stale = False def get_antialiased(self): return self._antialiased def get_color(self): return self._color def get_drawstyle(self): return self._drawstyle def get_linestyle(self): return self._linestyle def get_linewidth(self): return self._linewidth def get_marker(self): return self._marker.get_marker() def get_markeredgecolor(self): mec = self._markeredgecolor if (is_string_like(mec) and mec == 'auto'): if rcParams['_internal.classic_mode']: if self._marker.get_marker() in ('.', ','): return self._color if self._marker.is_filled() and self.get_fillstyle() != 'none': return 'k' # Bad hard-wired default... return self._color else: return mec def get_markeredgewidth(self): return self._markeredgewidth def _get_markerfacecolor(self, alt=False): if alt: fc = self._markerfacecoloralt else: fc = self._markerfacecolor if (is_string_like(fc) and fc.lower() == 'auto'): if self.get_fillstyle() == 'none': return 'none' else: return self._color else: return fc def get_markerfacecolor(self): return self._get_markerfacecolor(alt=False) def get_markerfacecoloralt(self): return self._get_markerfacecolor(alt=True) def get_markersize(self): return self._markersize def get_data(self, orig=True): """ Return the xdata, ydata. If *orig* is *True*, return the original data. """ return self.get_xdata(orig=orig), self.get_ydata(orig=orig) def get_xdata(self, orig=True): """ Return the xdata. If *orig* is *True*, return the original data, else the processed data. """ if orig: return self._xorig if self._invalidx: self.recache() return self._x def get_ydata(self, orig=True): """ Return the ydata. If *orig* is *True*, return the original data, else the processed data. """ if orig: return self._yorig if self._invalidy: self.recache() return self._y def get_path(self): """ Return the :class:`~matplotlib.path.Path` object associated with this line. """ if self._invalidy or self._invalidx: self.recache() return self._path def get_xydata(self): """ Return the *xy* data as a Nx2 numpy array. """ if self._invalidy or self._invalidx: self.recache() return self._xy def set_antialiased(self, b): """ True if line should be drawin with antialiased rendering ACCEPTS: [True | False] """ if self._antialiased != b: self.stale = True self._antialiased = b def set_color(self, color): """ Set the color of the line ACCEPTS: any matplotlib color """ self._color = color self.stale = True def set_drawstyle(self, drawstyle): """ Set the drawstyle of the plot 'default' connects the points with lines. The steps variants produce step-plots. 'steps' is equivalent to 'steps-pre' and is maintained for backward-compatibility. ACCEPTS: ['default' | 'steps' | 'steps-pre' | 'steps-mid' | 'steps-post'] """ if drawstyle is None: drawstyle = 'default' if drawstyle not in self.drawStyles: raise ValueError('Unrecognized drawstyle ' + ' '.join(self.drawStyleKeys)) if self._drawstyle != drawstyle: self.stale = True self._drawstyle = drawstyle def set_linewidth(self, w): """ Set the line width in points ACCEPTS: float value in points """ w = float(w) if self._linewidth != w: self.stale = True self._linewidth = w def set_linestyle(self, ls): """ Set the linestyle of the line (also accepts drawstyles, e.g., ``'steps--'``) =========================== ================= linestyle description =========================== ================= ``'-'`` or ``'solid'`` solid line ``'--'`` or ``'dashed'`` dashed line ``'-.'`` or ``'dashdot'`` dash-dotted line ``':'`` or ``'dotted'`` dotted line ``'None'`` draw nothing ``' '`` draw nothing ``''`` draw nothing =========================== ================= 'steps' is equivalent to 'steps-pre' and is maintained for backward-compatibility. Alternatively a dash tuple of the following form can be provided:: (offset, onoffseq), where ``onoffseq`` is an even length tuple of on and off ink in points. ACCEPTS: ['solid' | 'dashed', 'dashdot', 'dotted' | (offset, on-off-dash-seq) | ``'-'`` | ``'--'`` | ``'-.'`` | ``':'`` | ``'None'`` | ``' '`` | ``''``] .. seealso:: :meth:`set_drawstyle` To set the drawing style (stepping) of the plot. Parameters ---------- ls : { '-', '--', '-.', ':'} and more see description The line style. """ if not is_string_like(ls): if len(ls) != 2: raise ValueError() self.set_dashes(ls[1]) self._dashOffset = ls[0] self._linestyle = "--" return for ds in self.drawStyleKeys: # long names are first in the list if ls.startswith(ds): self.set_drawstyle(ds) if len(ls) > len(ds): ls = ls[len(ds):] else: ls = '-' break if ls in [' ', '', 'none']: ls = 'None' if ls not in self._lineStyles: try: ls = ls_mapper_r[ls] except KeyError: raise ValueError(("You passed in an invalid linestyle, " "`{0}`. See " "docs of Line2D.set_linestyle for " "valid values.").format(ls)) self._linestyle = ls @docstring.dedent_interpd def set_marker(self, marker): """ Set the line marker ACCEPTS: :mod:`A valid marker style <matplotlib.markers>` Parameters ----------- marker: marker style See `~matplotlib.markers` for full description of possible argument """ self._marker.set_marker(marker) self.stale = True def set_markeredgecolor(self, ec): """ Set the marker edge color ACCEPTS: any matplotlib color """ if ec is None: ec = 'auto' if self._markeredgecolor != ec: self.stale = True self._markeredgecolor = ec def set_markeredgewidth(self, ew): """ Set the marker edge width in points ACCEPTS: float value in points """ if ew is None: ew = rcParams['lines.markeredgewidth'] if self._markeredgewidth != ew: self.stale = True self._markeredgewidth = ew def set_markerfacecolor(self, fc): """ Set the marker face color. ACCEPTS: any matplotlib color """ if fc is None: fc = 'auto' if self._markerfacecolor != fc: self.stale = True self._markerfacecolor = fc def set_markerfacecoloralt(self, fc): """ Set the alternate marker face color. ACCEPTS: any matplotlib color """ if fc is None: fc = 'auto' if self._markerfacecoloralt != fc: self.stale = True self._markerfacecoloralt = fc def set_markersize(self, sz): """ Set the marker size in points ACCEPTS: float """ sz = float(sz) if self._markersize != sz: self.stale = True self._markersize = sz def set_xdata(self, x): """ Set the data np.array for x ACCEPTS: 1D array """ self._xorig = x self._invalidx = True self.stale = True def set_ydata(self, y): """ Set the data np.array for y ACCEPTS: 1D array """ self._yorig = y self._invalidy = True self.stale = True def set_dashes(self, seq): """ Set the dash sequence, sequence of dashes with on off ink in points. If seq is empty or if seq = (None, None), the linestyle will be set to solid. ACCEPTS: sequence of on/off ink in points """ if seq == (None, None) or len(seq) == 0: self.set_linestyle('-') else: self.set_linestyle('--') if self._dashSeq != seq: self.stale = True self._dashSeq = seq # TODO: offset ignored for now def _draw_lines(self, renderer, gc, path, trans): self._lineFunc(renderer, gc, path, trans) def _draw_steps_pre(self, renderer, gc, path, trans): steps = np.vstack(pts_to_prestep(*self._xy.T)).T path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_steps_post(self, renderer, gc, path, trans): steps = np.vstack(pts_to_poststep(*self._xy.T)).T path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_steps_mid(self, renderer, gc, path, trans): steps = np.vstack(pts_to_midstep(*self._xy.T)).T path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_solid(self, renderer, gc, path, trans): gc.set_linestyle('solid') renderer.draw_path(gc, path, trans) def _draw_dashed(self, renderer, gc, path, trans): gc.set_linestyle('dashed') if self._dashSeq is not None: gc.set_dashes(self._dashOffset, self._dashSeq) renderer.draw_path(gc, path, trans) def _draw_dash_dot(self, renderer, gc, path, trans): gc.set_linestyle('dashdot') renderer.draw_path(gc, path, trans) def _draw_dotted(self, renderer, gc, path, trans): gc.set_linestyle('dotted') renderer.draw_path(gc, path, trans) def update_from(self, other): """copy properties from other to self""" Artist.update_from(self, other) self._linestyle = other._linestyle self._linewidth = other._linewidth self._color = other._color self._markersize = other._markersize self._markerfacecolor = other._markerfacecolor self._markerfacecoloralt = other._markerfacecoloralt self._markeredgecolor = other._markeredgecolor self._markeredgewidth = other._markeredgewidth self._dashSeq = other._dashSeq self._dashOffset = other._dashOffset self._dashcapstyle = other._dashcapstyle self._dashjoinstyle = other._dashjoinstyle self._solidcapstyle = other._solidcapstyle self._solidjoinstyle = other._solidjoinstyle self._linestyle = other._linestyle self._marker = MarkerStyle(other._marker.get_marker(), other._marker.get_fillstyle()) self._drawstyle = other._drawstyle def _get_rgba_face(self, alt=False): facecolor = self._get_markerfacecolor(alt=alt) if is_string_like(facecolor) and facecolor.lower() == 'none': rgbaFace = None else: rgbaFace = mcolors.to_rgba(facecolor, self._alpha) return rgbaFace def _get_rgba_ln_color(self, alt=False): return mcolors.to_rgba(self._color, self._alpha) # some aliases.... def set_aa(self, val): 'alias for set_antialiased' self.set_antialiased(val) def set_c(self, val): 'alias for set_color' self.set_color(val) def set_ls(self, val): """alias for set_linestyle""" self.set_linestyle(val) def set_lw(self, val): """alias for set_linewidth""" self.set_linewidth(val) def set_mec(self, val): """alias for set_markeredgecolor""" self.set_markeredgecolor(val) def set_mew(self, val): """alias for set_markeredgewidth""" self.set_markeredgewidth(val) def set_mfc(self, val): """alias for set_markerfacecolor""" self.set_markerfacecolor(val) def set_mfcalt(self, val): """alias for set_markerfacecoloralt""" self.set_markerfacecoloralt(val) def set_ms(self, val): """alias for set_markersize""" self.set_markersize(val) def get_aa(self): """alias for get_antialiased""" return self.get_antialiased() def get_c(self): """alias for get_color""" return self.get_color() def get_ls(self): """alias for get_linestyle""" return self.get_linestyle() def get_lw(self): """alias for get_linewidth""" return self.get_linewidth() def get_mec(self): """alias for get_markeredgecolor""" return self.get_markeredgecolor() def get_mew(self): """alias for get_markeredgewidth""" return self.get_markeredgewidth() def get_mfc(self): """alias for get_markerfacecolor""" return self.get_markerfacecolor() def get_mfcalt(self, alt=False): """alias for get_markerfacecoloralt""" return self.get_markerfacecoloralt() def get_ms(self): """alias for get_markersize""" return self.get_markersize() def set_dash_joinstyle(self, s): """ Set the join style for dashed linestyles ACCEPTS: ['miter' | 'round' | 'bevel'] """ s = s.lower() if s not in self.validJoin: raise ValueError('set_dash_joinstyle passed "%s";\n' % (s,) + 'valid joinstyles are %s' % (self.validJoin,)) if self._dashjoinstyle != s: self.stale = True self._dashjoinstyle = s def set_solid_joinstyle(self, s): """ Set the join style for solid linestyles ACCEPTS: ['miter' | 'round' | 'bevel'] """ s = s.lower() if s not in self.validJoin: raise ValueError('set_solid_joinstyle passed "%s";\n' % (s,) + 'valid joinstyles are %s' % (self.validJoin,)) if self._solidjoinstyle != s: self.stale = True self._solidjoinstyle = s def get_dash_joinstyle(self): """ Get the join style for dashed linestyles """ return self._dashjoinstyle def get_solid_joinstyle(self): """ Get the join style for solid linestyles """ return self._solidjoinstyle def set_dash_capstyle(self, s): """ Set the cap style for dashed linestyles ACCEPTS: ['butt' | 'round' | 'projecting'] """ s = s.lower() if s not in self.validCap: raise ValueError('set_dash_capstyle passed "%s";\n' % (s,) + 'valid capstyles are %s' % (self.validCap,)) if self._dashcapstyle != s: self.stale = True self._dashcapstyle = s def set_solid_capstyle(self, s): """ Set the cap style for solid linestyles ACCEPTS: ['butt' | 'round' | 'projecting'] """ s = s.lower() if s not in self.validCap: raise ValueError('set_solid_capstyle passed "%s";\n' % (s,) + 'valid capstyles are %s' % (self.validCap,)) if self._solidcapstyle != s: self.stale = True self._solidcapstyle = s def get_dash_capstyle(self): """ Get the cap style for dashed linestyles """ return self._dashcapstyle def get_solid_capstyle(self): """ Get the cap style for solid linestyles """ return self._solidcapstyle def is_dashed(self): 'return True if line is dashstyle' return self._linestyle in ('--', '-.', ':')
def plot_data(path=None, measures=None, axes=None, values=None, split_by=None, select=None, hold=0, **kwargs): """Create matrix using 'data_to_matrix', then plots in either 2d and 3d.""" if None in (axes, values): raise Exception('plot_data is missing arguments.') if len(axes) > 2: print( 'ERROR: plot_data cannot plot more than 2 axes. Taking only first 2 axes.' ) axes = axes[:2] if measures is None: measures = open_measures(path) functions = set([ v[1].pop('function') for v in values if isinstance(v, tuple) and 'function' in v[1] ]) for function in functions: newcols = measures.apply(function, axis=1) if values is None: values = list(newcols)[:1] elif not hasattr(values, '__iter__'): values = [values] #print newcol measures = measures.join(newcols) values = to_iterable(values) if not hasattr(values, '__iter__'): values = [values] kwargs.setdefault('style', 'scatter') idx, mat = data_to_matrix( measures=measures, axes=axes, values=[v[0] if isinstance(v, tuple) else v for v in values], split_by=split_by, select=select, **kwargs) dico = kwargs.get('dictionary', {}) def get_dico(val): return dico.get(val, val) title = kwargs.pop('title', '') if not split_by is None: newfig = kwargs.pop('newfig', 1) for ik, key in enumerate(sorted(idx)): kw = {} kw.update(kwargs) kw['newfig'] = newfig kw.setdefault('color', get_cmap(ik, len(idx))) from matplotlib.markers import MarkerStyle from itertools import product as iprod markers = sorted(list( iprod(['o', 'X', '^', 's', 'p', 'v', 'P'][:(len(idx) + 1) / 2], ('full', 'none'))), key=lambda e: e[1], reverse=1) * 50 kw.setdefault( 'marker', MarkerStyle(marker=markers[ik][0], fillstyle=markers[ik][1])) make_figure(idx[key], mat[key], title=title, axes=axes, values=values, **kw) newfig = False if kwargs.get('show_legends', True): plt.legend([ ', '.join([ r'{}={}'.format(get_dico(j[0]), get_dico(j[1])) if get_dico(j[0]) else r'{}'.format(get_dico(j[1])) for j in i ]) for i in sorted(idx) ]) else: #print split_by, mat.keys() make_figure(idx, mat, axes=axes, values=values, title=title, **kwargs) if not hold: plt.show()
def Draw(self, products, micapsfile, debug=True): """ 根据产品参数绘制图像 :param micapsfile: 指定绘制产品中包含的一个micapsfile :param debug: 调试状态 :param products: 产品参数 :return: """ self.UpdateData(products, micapsfile) extents = products.picture.extents xmax = extents.xmax xmin = extents.xmin ymax = extents.ymax ymin = extents.ymin # 设置绘图画板的宽和高 单位:英寸 h = products.picture.height if products.map.projection.name == 'sall': # 等经纬度投影时不用配置本身的宽度,直接根据宽高比得到 w = h * np.math.fabs( (xmax - xmin) / (ymax - ymin)) * products.picture.widthshrink else: w = products.picture.width # 创建画布 fig = plt.figure(figsize=(w, h), dpi=products.picture.dpi, facecolor="white") # 必须在前面 ax = fig.add_subplot(111) ax.spines['bottom'].set_linewidth(products.map.projection.axisthick) ax.spines['left'].set_linewidth(products.map.projection.axisthick) ax.spines['right'].set_linewidth(products.map.projection.axisthick) ax.spines['top'].set_linewidth(products.map.projection.axisthick) # 设置绘图区域 plt.xlim(xmin, xmax) plt.ylim(ymin, ymax) # 背景透明 fig.patch.set_alpha(products.picture.opacity) # 坐标系统尽可能靠近绘图区边界 fig.tight_layout(pad=products.picture.pad) clipborder = products.map.clipborders[0] # 获得产品投影 from Projection import Projection m = Projection.GetProjection(products) if m is not plt: # 用投影更新经纬度数据 self.X, self.Y = Micaps.UpdateXY(m, self.X, self.Y) # 用投影更新产品参数中涉及经纬度的数据 Micaps.Update(products, m) # 画世界底图 Map.DrawWorld(products, m) # 绘制裁切区域边界 patch = Map.DrawClipBorders(products.map.clipborders) # draw parallels and meridians. Map.DrawGridLine(products, m) cmap = nclcmaps.cmaps( micapsfile.legend.micapslegendcolor) # cm.jet temp_diff_18lev vmax = math.ceil(self.max) vmin = math.floor(self.min) levels = arange(vmin - self.distance, vmax + self.distance + 0.1, self.distance) if micapsfile.legend.micapslegendvalue: level = levels else: level = micapsfile.legend.legendvalue # 绘制等值线 ------ 等值线和标注是一体的 c = micapsfile.contour Map.DrawContourAndMark(contour=c, x=self.X, y=self.Y, z=self.Z, level=level, clipborder=clipborder, patch=patch, m=m) cf = micapsfile.contour cbar = micapsfile.legend extend = micapsfile.legend.extend # 绘制色斑图 ------ 色版图、图例、裁切是一体的 Map.DrawContourfAndLegend(contourf=cf, legend=cbar, clipborder=clipborder, patch=patch, cmap=cmap, levels=levels, extend=extend, extents=extents, x=self.X, y=self.Y, z=self.Z, m=m) # 绘制描述文本 MicapsFile.MicapsFile.DrawTitle(m, micapsfile.title, self.title) self.DrawUV(m, micapsfile, clipborder, patch) # 绘制地图 Map.DrawBorders(m, products) # 绘制散点 if micapsfile.contour.scatter: if hasattr(self, 'x1'): m.scatter(self.x1, self.y1, s=micapsfile.contour.radius, c=self.z1, alpha=micapsfile.contour.alpha, edgecolors='b') else: m.scatter(self.X, self.Y, s=micapsfile.contour.radius, c=self.Z, alpha=micapsfile.contour.alpha, edgecolors='b') # 绘制站点 stations = products.map.stations if stations.visible: # 'code': code, 'lon': lon, 'lat': lat, 'height': height, # 'iclass': iclass, 'infosum': infosum, 'name': info[0] # stations_tuple = tuple(stations.micapsdata.stations) # (code, lat, lon, height, iclass, infosum, info[0]) # stations_array = np.array(stations.micapsdata.stations, dtype=[ # ('code', 'U'), # ('lat', np.float32), # ('lon', np.float32), # ('height', np.float32), # ('iclass', 'i'), # ('infosum', 'i'), # ('info', 'U') # ]) # stations_array = [list(ele) for ele in zip(*stations.micapsdata.stations)] stations_array = zip(*stations.micapsdata.stations) # 画站点mark if m is not plt: stations_array[2], stations_array[1] = \ Micaps.UpdateXY(m, stations_array[2], stations_array[1]) marker = MarkerStyle(stations.markstyle[0], stations.markstyle[1]) m.scatter(stations_array[2], stations_array[1], marker=marker, s=stations.radius, c=stations.color, alpha=stations.alpha, edgecolors=stations.edgecolors) # 画站点文本 fontfile = r"C:\WINDOWS\Fonts\{0}".format(stations.font[1]) if not os.path.exists(fontfile): font = FontProperties(size=stations.font[0], weight=stations.font[2]) else: font = FontProperties(fname=fontfile, size=stations.font[0], weight=stations.font[2]) for sta in stations.micapsdata.stations: if m is not plt: lon, lat = Micaps.UpdateXY(m, sta[2], sta[1]) lon1, lat1 = Micaps.UpdateXY(m, sta[2] + stations.detax, sta[1]) deta = lon1 - lon else: lon, lat = sta[2], sta[1] deta = stations.detax plt.text(lon + deta, lat, sta[6], fontproperties=font, rotation=0, color=stations.font[3], ha='left', va='center') # 接近收尾 # self.Clip(clipborder, fig, patch) # 存图 Picture.savePicture(fig, products.picture.picfile) print(products.picture.picfile + u'存图成功!') if debug: plt.show()
list1_2 = [p_mid_BE[0], p_mid_EC[0]] list2_2 = [p_mid_BE[1], p_mid_EC[1]] #T# plot the figure ax1.plot(list1, list2, 'k') #T# plot the points ax1.scatter(list1, list2, s=12, color='k') #T# set the math text font to the Latex default, Computer Modern import matplotlib matplotlib.rcParams['mathtext.fontset'] = 'cm' #T# create the markers marker1 = MarkerStyle(r'$|$') marker1._transform.scale(1.6, 2.2) marker1._transform.rotate_deg(63) marker2 = MarkerStyle(r'$||$') marker2._transform.scale(1.6, 2.2) marker2._transform.rotate_deg(-48) #T# plot the markers ax1.plot(list1_1, list2_1, 'k', marker=marker1) ax1.plot(list1_2, list2_2, 'k', marker=marker2) #T# create the labels label_A = ax1.annotate(r'$A$', (A[0], A[1]), ha='right', va='top', size=18) label_B = ax1.annotate(r'$B$', (B[0], B[1]), ha='left', va='top', size=18) label_C = ax1.annotate(r'$C$', (C[0], C[1]), ha='center', va='bottom', size=18)
#T# plot the figure ax1.plot(list_x_1a, list_y_1a, 'k') ax1.plot(list_x_1b, list_y_1b, 'k') ax1.plot(list_x_1c, list_y_1c, 'k') ax1.scatter(list_x_2, list_y_2, s = 12, color = 'k') arc1 = mpatches.Arc(B, 1, 1, theta2 = math.degrees(a_ABC)) ax1.add_patch(arc1) #T# set the math text font to the Latex default, Computer Modern import matplotlib matplotlib.rcParams['mathtext.fontset'] = 'cm' #T# create the markers marker1 = MarkerStyle(r'|') marker1._transform.scale(1, 2) marker1._transform.rotate(math.pi/2 + a_marker1) marker2 = MarkerStyle(r'|') marker2._transform.scale(1, 2) marker2._transform.rotate(math.pi/2 + a_marker2) #T# plot the markers ax1.plot(p_marker1[0], p_marker1[1], 'k', marker = marker1) ax1.plot(p_marker2[0], p_marker2[1], 'k', marker = marker2) #T# create the labels label_A = ax1.annotate(r'$A$', A, ha = 'right', va = 'bottom', size = 16) label_B = ax1.annotate(r'$B$', B, ha = 'right', va = 'top', size = 16) label_C = ax1.annotate(r'$C$', C, ha = 'left', va = 'top', size = 16)
def draw_pathcollection(data, obj): """Returns PGFPlots code for a number of patch objects. """ content = [] # gather data assert obj.get_offsets() is not None labels = ["x" + 21 * " ", "y" + 21 * " "] dd = obj.get_offsets() draw_options = ["only marks"] table_options = [] if obj.get_array() is not None: draw_options.append("scatter") dd = numpy.column_stack([dd, obj.get_array()]) labels.append("colordata" + 13 * " ") draw_options.append("scatter src=explicit") table_options.extend(["x=x", "y=y", "meta=colordata"]) ec = None fc = None ls = None marker0 = None else: # gather the draw options try: ec = obj.get_edgecolors()[0] except (TypeError, IndexError): ec = None try: fc = obj.get_facecolors()[0] except (TypeError, IndexError): fc = None try: ls = obj.get_linestyle()[0] except (TypeError, IndexError): ls = None # "solution" from # <https://github.com/matplotlib/matplotlib/issues/4672#issuecomment-378702670> p = obj.get_paths()[0] ms = {style: MarkerStyle(style) for style in MarkerStyle.markers} paths = { style: marker.get_path().transformed(marker.get_transform()) for style, marker in ms.items() } marker0 = None for marker, path in paths.items(): if (numpy.all(path.codes == p.codes) and (path.vertices.shape == p.vertices.shape) and numpy.max( numpy.abs(path.vertices - p.vertices)) < 1.0e-10): marker0 = marker break is_contour = len(dd) == 1 if is_contour: draw_options = ["draw=none"] if marker0 is not None: data, pgfplots_marker, marker_options = _mpl_marker2pgfp_marker( data, marker0, fc) draw_options += ["marker={}".format(pgfplots_marker)] + marker_options # `only mark` plots don't need linewidth data, extra_draw_options = get_draw_options(data, obj, ec, fc, ls, None) draw_options += extra_draw_options if obj.get_cmap(): mycolormap, is_custom_cmap = _mpl_cmap2pgf_cmap(obj.get_cmap(), data) draw_options.append("colormap" + ("=" if is_custom_cmap else "/") + mycolormap) legend_text = get_legend_text(obj) if legend_text is None and has_legend(obj.axes): draw_options.append("forget plot") for path in obj.get_paths(): if is_contour: dd = path.vertices if len(obj.get_sizes()) == len(dd): # See Pgfplots manual, chapter 4.25. # In Pgfplots, \mark size specifies raddi, in matplotlib circle areas. radii = numpy.sqrt(obj.get_sizes() / numpy.pi) dd = numpy.column_stack([dd, radii]) labels.append("sizedata" + 14 * " ") draw_options.extend([ "visualization depends on=" "{\\thisrow{sizedata} \\as\\perpointmarksize}", "scatter/@pre marker code/.append style=" "{/tikz/mark size=\\perpointmarksize}", ]) do = " [{}]".format(", ".join(draw_options)) if draw_options else "" content.append("\\addplot{}\n".format(do)) to = " [{}]".format(", ".join(table_options)) if table_options else "" content.append("table{}{{%\n".format(to)) content.append((" ".join(labels)).strip() + "\n") ff = data["float format"] fmt = (" ".join(dd.shape[1] * [ff])) + "\n" for d in dd: content.append(fmt.format(*tuple(d))) content.append("};\n") if legend_text is not None: content.append("\\addlegendentry{{{}}}\n".format(legend_text)) return data, content
class Line2D(Artist): """ A line - the line can have both a solid linestyle connecting all the vertices, and a marker at each vertex. Additionally, the drawing of the solid line is influenced by the drawstyle, e.g., one can create "stepped" lines in various styles. """ lineStyles = _lineStyles = { # hidden names deprecated '-': '_draw_solid', '--': '_draw_dashed', '-.': '_draw_dash_dot', ':': '_draw_dotted', 'None': '_draw_nothing', ' ': '_draw_nothing', '': '_draw_nothing', } _drawStyles_l = { 'default': '_draw_lines', 'steps-mid': '_draw_steps_mid', 'steps-pre': '_draw_steps_pre', 'steps-post': '_draw_steps_post', } _drawStyles_s = { 'steps': '_draw_steps_pre', } drawStyles = {} drawStyles.update(_drawStyles_l) drawStyles.update(_drawStyles_s) # Need a list ordered with long names first: drawStyleKeys = (list(six.iterkeys(_drawStyles_l)) + list(six.iterkeys(_drawStyles_s))) # Referenced here to maintain API. These are defined in # MarkerStyle markers = MarkerStyle.markers filled_markers = MarkerStyle.filled_markers fillStyles = MarkerStyle.fillstyles zorder = 2 validCap = ('butt', 'round', 'projecting') validJoin = ('miter', 'round', 'bevel') def __str__(self): if self._label != "": return "Line2D(%s)" % (self._label) elif hasattr(self, '_x') and len(self._x) > 3: return "Line2D((%g,%g),(%g,%g),...,(%g,%g))"\ % (self._x[0], self._y[0], self._x[0], self._y[0], self._x[-1], self._y[-1]) elif hasattr(self, '_x'): return "Line2D(%s)"\ % (",".join(["(%g,%g)" % (x, y) for x, y in zip(self._x, self._y)])) else: return "Line2D()" def __init__( self, xdata, ydata, linewidth=None, # all Nones default to rc linestyle=None, color=None, marker=None, markersize=None, markeredgewidth=None, markeredgecolor=None, markerfacecolor=None, markerfacecoloralt='none', fillstyle='full', antialiased=None, dash_capstyle=None, solid_capstyle=None, dash_joinstyle=None, solid_joinstyle=None, pickradius=5, drawstyle=None, markevery=None, **kwargs): """ Create a :class:`~matplotlib.lines.Line2D` instance with *x* and *y* data in sequences *xdata*, *ydata*. The kwargs are :class:`~matplotlib.lines.Line2D` properties: %(Line2D)s See :meth:`set_linestyle` for a decription of the line styles, :meth:`set_marker` for a description of the markers, and :meth:`set_drawstyle` for a description of the draw styles. """ Artist.__init__(self) #convert sequences to numpy arrays if not iterable(xdata): raise RuntimeError('xdata must be a sequence') if not iterable(ydata): raise RuntimeError('ydata must be a sequence') if linewidth is None: linewidth = rcParams['lines.linewidth'] if linestyle is None: linestyle = rcParams['lines.linestyle'] if marker is None: marker = rcParams['lines.marker'] if color is None: color = rcParams['lines.color'] if markersize is None: markersize = rcParams['lines.markersize'] if antialiased is None: antialiased = rcParams['lines.antialiased'] if dash_capstyle is None: dash_capstyle = rcParams['lines.dash_capstyle'] if dash_joinstyle is None: dash_joinstyle = rcParams['lines.dash_joinstyle'] if solid_capstyle is None: solid_capstyle = rcParams['lines.solid_capstyle'] if solid_joinstyle is None: solid_joinstyle = rcParams['lines.solid_joinstyle'] if drawstyle is None: drawstyle = 'default' self.set_dash_capstyle(dash_capstyle) self.set_dash_joinstyle(dash_joinstyle) self.set_solid_capstyle(solid_capstyle) self.set_solid_joinstyle(solid_joinstyle) self.set_linestyle(linestyle) self.set_drawstyle(drawstyle) self.set_linewidth(linewidth) self.set_color(color) self._marker = MarkerStyle() self.set_marker(marker) self.set_markevery(markevery) self.set_antialiased(antialiased) self.set_markersize(markersize) self._dashSeq = None self.set_markerfacecolor(markerfacecolor) self.set_markerfacecoloralt(markerfacecoloralt) self.set_markeredgecolor(markeredgecolor) self.set_markeredgewidth(markeredgewidth) self.set_fillstyle(fillstyle) self.verticalOffset = None # update kwargs before updating data to give the caller a # chance to init axes (and hence unit support) self.update(kwargs) self.pickradius = pickradius self.ind_offset = 0 if is_numlike(self._picker): self.pickradius = self._picker self._xorig = np.asarray([]) self._yorig = np.asarray([]) self._invalidx = True self._invalidy = True self.set_data(xdata, ydata) def __getstate__(self): state = super(Line2D, self).__getstate__() # _linefunc will be restored on draw time. state.pop('_lineFunc', None) return state def contains(self, mouseevent): """ Test whether the mouse event occurred on the line. The pick radius determines the precision of the location test (usually within five points of the value). Use :meth:`~matplotlib.lines.Line2D.get_pickradius` or :meth:`~matplotlib.lines.Line2D.set_pickradius` to view or modify it. Returns *True* if any values are within the radius along with ``{'ind': pointlist}``, where *pointlist* is the set of points within the radius. TODO: sort returned indices by distance """ if six.callable(self._contains): return self._contains(self, mouseevent) if not is_numlike(self.pickradius): raise ValueError("pick radius should be a distance") # Make sure we have data to plot if self._invalidy or self._invalidx: self.recache() if len(self._xy) == 0: return False, {} # Convert points to pixels transformed_path = self._get_transformed_path() path, affine = transformed_path.get_transformed_path_and_affine() path = affine.transform_path(path) xy = path.vertices xt = xy[:, 0] yt = xy[:, 1] # Convert pick radius from points to pixels if self.figure is None: warnings.warn('no figure set when check if mouse is on line') pixels = self.pickradius else: pixels = self.figure.dpi / 72. * self.pickradius # the math involved in checking for containment (here and inside of # segment_hits) assumes that it is OK to overflow. In case the # application has set the error flags such that an exception is raised # on overflow, we temporarily set the appropriate error flags here and # set them back when we are finished. olderrflags = np.seterr(all='ignore') try: # Check for collision if self._linestyle in ['None', None]: # If no line, return the nearby point(s) d = (xt - mouseevent.x)**2 + (yt - mouseevent.y)**2 ind, = np.nonzero(np.less_equal(d, pixels**2)) else: # If line, return the nearby segment(s) ind = segment_hits(mouseevent.x, mouseevent.y, xt, yt, pixels) finally: np.seterr(**olderrflags) ind += self.ind_offset # Debugging message if False and self._label != '': print("Checking line", self._label, "at", mouseevent.x, mouseevent.y) print('xt', xt) print('yt', yt) #print 'dx,dy', (xt-mouseevent.x)**2., (yt-mouseevent.y)**2. print('ind', ind) # Return the point(s) within radius return len(ind) > 0, dict(ind=ind) def get_pickradius(self): """return the pick radius used for containment tests""" return self.pickradius def set_pickradius(self, d): """Sets the pick radius used for containment tests ACCEPTS: float distance in points """ self.pickradius = d def get_fillstyle(self): """ return the marker fillstyle """ return self._marker.get_fillstyle() def set_fillstyle(self, fs): """ Set the marker fill style; 'full' means fill the whole marker. 'none' means no filling; other options are for half-filled markers. ACCEPTS: ['full' | 'left' | 'right' | 'bottom' | 'top' | 'none'] """ self._marker.set_fillstyle(fs) def set_markevery(self, every): """Set the markevery property to subsample the plot when using markers. e.g., if `every=5`, every 5-th marker will be plotted. ACCEPTS: [None | int | length-2 tuple of int | slice | list/array of int | float | length-2 tuple of float] Parameters ---------- every: None | int | length-2 tuple of int | slice | list/array of int | float | length-2 tuple of float Which markers to plot. - every=None, every point will be plotted. - every=N, every N-th marker will be plotted starting with marker 0. - every=(start, N), every N-th marker, starting at point start, will be plotted. - every=slice(start, end, N), every N-th marker, starting at point start, upto but not including point end, will be plotted. - every=[i, j, m, n], only markers at points i, j, m, and n will be plotted. - every=0.1, (i.e. a float) then markers will be spaced at approximately equal distances along the line; the distance along the line between markers is determined by multiplying the display-coordinate distance of the axes bounding-box diagonal by the value of every. - every=(0.5, 0.1) (i.e. a length-2 tuple of float), the same functionality as every=0.1 is exhibited but the first marker will be 0.5 multiplied by the display-cordinate-diagonal-distance along the line. Notes ----- Setting the markevery property will only show markers at actual data points. When using float arguments to set the markevery property on irregularly spaced data, the markers will likely not appear evenly spaced because the actual data points do not coincide with the theoretical spacing between markers. When using a start offset to specify the first marker, the offset will be from the first data point which may be different from the first the visible data point if the plot is zoomed in. If zooming in on a plot when using float arguments then the actual data points that have markers will change because the distance between markers is always determined from the display-coordinates axes-bounding-box-diagonal regardless of the actual axes data limits. """ self._markevery = every def get_markevery(self): """return the markevery setting""" return self._markevery def set_picker(self, p): """Sets the event picker details for the line. ACCEPTS: float distance in points or callable pick function ``fn(artist, event)`` """ if six.callable(p): self._contains = p else: self.pickradius = p self._picker = p def get_window_extent(self, renderer): bbox = Bbox([[0, 0], [0, 0]]) trans_data_to_xy = self.get_transform().transform bbox.update_from_data_xy(trans_data_to_xy(self.get_xydata()), ignore=True) # correct for marker size, if any if self._marker: ms = (self._markersize / 72.0 * self.figure.dpi) * 0.5 bbox = bbox.padded(ms) return bbox @Artist.axes.setter def axes(self, ax): # call the set method from the base-class property Artist.axes.fset(self, ax) # connect unit-related callbacks if ax.xaxis is not None: self._xcid = ax.xaxis.callbacks.connect('units', self.recache_always) if ax.yaxis is not None: self._ycid = ax.yaxis.callbacks.connect('units', self.recache_always) def set_data(self, *args): """ Set the x and y data ACCEPTS: 2D array (rows are x, y) or two 1D arrays """ if len(args) == 1: x, y = args[0] else: x, y = args self.set_xdata(x) self.set_ydata(y) def recache_always(self): self.recache(always=True) def recache(self, always=False): if always or self._invalidx: xconv = self.convert_xunits(self._xorig) if ma.isMaskedArray(self._xorig): x = ma.asarray(xconv, np.float_) else: x = np.asarray(xconv, np.float_) x = x.ravel() else: x = self._x if always or self._invalidy: yconv = self.convert_yunits(self._yorig) if ma.isMaskedArray(self._yorig): y = ma.asarray(yconv, np.float_) else: y = np.asarray(yconv, np.float_) y = y.ravel() else: y = self._y if len(x) == 1 and len(y) > 1: x = x * np.ones(y.shape, np.float_) if len(y) == 1 and len(x) > 1: y = y * np.ones(x.shape, np.float_) if len(x) != len(y): raise RuntimeError('xdata and ydata must be the same length') x = x.reshape((len(x), 1)) y = y.reshape((len(y), 1)) if ma.isMaskedArray(x) or ma.isMaskedArray(y): self._xy = ma.concatenate((x, y), 1) else: self._xy = np.concatenate((x, y), 1) self._x = self._xy[:, 0] # just a view self._y = self._xy[:, 1] # just a view self._subslice = False if (self.axes and len(x) > 100 and self._is_sorted(x) and self.axes.name == 'rectilinear' and self.axes.get_xscale() == 'linear' and self._markevery is None and self.get_clip_on() is True): self._subslice = True if hasattr(self, '_path'): interpolation_steps = self._path._interpolation_steps else: interpolation_steps = 1 self._path = Path(self._xy, None, interpolation_steps) self._transformed_path = None self._invalidx = False self._invalidy = False def _transform_path(self, subslice=None): """ Puts a TransformedPath instance at self._transformed_path, all invalidation of the transform is then handled by the TransformedPath instance. """ # Masked arrays are now handled by the Path class itself if subslice is not None: _path = Path(self._xy[subslice, :]) else: _path = self._path self._transformed_path = TransformedPath(_path, self.get_transform()) def _get_transformed_path(self): """ Return the :class:`~matplotlib.transforms.TransformedPath` instance of this line. """ if self._transformed_path is None: self._transform_path() return self._transformed_path def set_transform(self, t): """ set the Transformation instance used by this artist ACCEPTS: a :class:`matplotlib.transforms.Transform` instance """ Artist.set_transform(self, t) self._invalidx = True self._invalidy = True def _is_sorted(self, x): """return true if x is sorted""" if len(x) < 2: return 1 return np.amin(x[1:] - x[0:-1]) >= 0 @allow_rasterization def draw(self, renderer): """draw the Line with `renderer` unless visibility is False""" if not self.get_visible(): return if self._invalidy or self._invalidx: self.recache() self.ind_offset = 0 # Needed for contains() method. if self._subslice and self.axes: # Need to handle monotonically decreasing case also... x0, x1 = self.axes.get_xbound() i0, = self._x.searchsorted([x0], 'left') i1, = self._x.searchsorted([x1], 'right') subslice = slice(max(i0 - 1, 0), i1 + 1) self.ind_offset = subslice.start self._transform_path(subslice) transf_path = self._get_transformed_path() if self.get_path_effects(): from matplotlib.patheffects import PathEffectRenderer renderer = PathEffectRenderer(self.get_path_effects(), renderer) renderer.open_group('line2d', self.get_gid()) gc = renderer.new_gc() self._set_gc_clip(gc) ln_color_rgba = self._get_rgba_ln_color() gc.set_foreground(ln_color_rgba, isRGBA=True) gc.set_alpha(ln_color_rgba[3]) gc.set_antialiased(self._antialiased) gc.set_linewidth(self._linewidth) if self.is_dashed(): cap = self._dashcapstyle join = self._dashjoinstyle else: cap = self._solidcapstyle join = self._solidjoinstyle gc.set_joinstyle(join) gc.set_capstyle(cap) gc.set_snap(self.get_snap()) if self.get_sketch_params() is not None: gc.set_sketch_params(*self.get_sketch_params()) funcname = self._lineStyles.get(self._linestyle, '_draw_nothing') if funcname != '_draw_nothing': tpath, affine = transf_path.get_transformed_path_and_affine() if len(tpath.vertices): self._lineFunc = getattr(self, funcname) funcname = self.drawStyles.get(self._drawstyle, '_draw_lines') drawFunc = getattr(self, funcname) drawFunc(renderer, gc, tpath, affine.frozen()) if self._marker: gc = renderer.new_gc() self._set_gc_clip(gc) rgbaFace = self._get_rgba_face() rgbaFaceAlt = self._get_rgba_face(alt=True) edgecolor = self.get_markeredgecolor() if is_string_like(edgecolor) and edgecolor.lower() == 'none': gc.set_linewidth(0) gc.set_foreground(rgbaFace, isRGBA=True) else: gc.set_foreground(edgecolor) gc.set_linewidth(self._markeredgewidth) marker = self._marker tpath, affine = transf_path.get_transformed_points_and_affine() if len(tpath.vertices): # subsample the markers if markevery is not None markevery = self.get_markevery() if markevery is not None: subsampled = _mark_every_path(markevery, tpath, affine, self.axes.transAxes) else: subsampled = tpath snap = marker.get_snap_threshold() if type(snap) == float: snap = renderer.points_to_pixels(self._markersize) >= snap gc.set_snap(snap) gc.set_joinstyle(marker.get_joinstyle()) gc.set_capstyle(marker.get_capstyle()) marker_path = marker.get_path() marker_trans = marker.get_transform() w = renderer.points_to_pixels(self._markersize) if marker.get_marker() != ',': # Don't scale for pixels, and don't stroke them marker_trans = marker_trans.scale(w) else: gc.set_linewidth(0) if rgbaFace is not None: gc.set_alpha(rgbaFace[3]) renderer.draw_markers(gc, marker_path, marker_trans, subsampled, affine.frozen(), rgbaFace) alt_marker_path = marker.get_alt_path() if alt_marker_path: if rgbaFaceAlt is not None: gc.set_alpha(rgbaFaceAlt[3]) alt_marker_trans = marker.get_alt_transform() alt_marker_trans = alt_marker_trans.scale(w) renderer.draw_markers(gc, alt_marker_path, alt_marker_trans, subsampled, affine.frozen(), rgbaFaceAlt) gc.restore() gc.restore() renderer.close_group('line2d') def get_antialiased(self): return self._antialiased def get_color(self): return self._color def get_drawstyle(self): return self._drawstyle def get_linestyle(self): return self._linestyle def get_linewidth(self): return self._linewidth def get_marker(self): return self._marker.get_marker() def get_markeredgecolor(self): mec = self._markeredgecolor if (is_string_like(mec) and mec == 'auto'): if self._marker.get_marker() in ('.', ','): return self._color if self._marker.is_filled() and self.get_fillstyle() != 'none': return 'k' # Bad hard-wired default... else: return self._color else: return mec def get_markeredgewidth(self): return self._markeredgewidth def _get_markerfacecolor(self, alt=False): if alt: fc = self._markerfacecoloralt else: fc = self._markerfacecolor if (is_string_like(fc) and fc.lower() == 'auto'): if self.get_fillstyle() == 'none': return 'none' else: return self._color else: return fc def get_markerfacecolor(self): return self._get_markerfacecolor(alt=False) def get_markerfacecoloralt(self): return self._get_markerfacecolor(alt=True) def get_markersize(self): return self._markersize def get_data(self, orig=True): """ Return the xdata, ydata. If *orig* is *True*, return the original data. """ return self.get_xdata(orig=orig), self.get_ydata(orig=orig) def get_xdata(self, orig=True): """ Return the xdata. If *orig* is *True*, return the original data, else the processed data. """ if orig: return self._xorig if self._invalidx: self.recache() return self._x def get_ydata(self, orig=True): """ Return the ydata. If *orig* is *True*, return the original data, else the processed data. """ if orig: return self._yorig if self._invalidy: self.recache() return self._y def get_path(self): """ Return the :class:`~matplotlib.path.Path` object associated with this line. """ if self._invalidy or self._invalidx: self.recache() return self._path def get_xydata(self): """ Return the *xy* data as a Nx2 numpy array. """ if self._invalidy or self._invalidx: self.recache() return self._xy def set_antialiased(self, b): """ True if line should be drawin with antialiased rendering ACCEPTS: [True | False] """ self._antialiased = b def set_color(self, color): """ Set the color of the line ACCEPTS: any matplotlib color """ self._color = color def set_drawstyle(self, drawstyle): """ Set the drawstyle of the plot 'default' connects the points with lines. The steps variants produce step-plots. 'steps' is equivalent to 'steps-pre' and is maintained for backward-compatibility. ACCEPTS: ['default' | 'steps' | 'steps-pre' | 'steps-mid' | 'steps-post'] """ self._drawstyle = drawstyle def set_linewidth(self, w): """ Set the line width in points ACCEPTS: float value in points """ self._linewidth = float(w) def set_linestyle(self, linestyle): """ Set the linestyle of the line (also accepts drawstyles) ================ ================= linestyle description ================ ================= ``'-'`` solid ``'--'`` dashed ``'-.'`` dash_dot ``':'`` dotted ``'None'`` draw nothing ``' '`` draw nothing ``''`` draw nothing ================ ================= 'steps' is equivalent to 'steps-pre' and is maintained for backward-compatibility. .. seealso:: :meth:`set_drawstyle` To set the drawing style (stepping) of the plot. ACCEPTS: [``'-'`` | ``'--'`` | ``'-.'`` | ``':'`` | ``'None'`` | ``' '`` | ``''``] and any drawstyle in combination with a linestyle, e.g., ``'steps--'``. """ for ds in self.drawStyleKeys: # long names are first in the list if linestyle.startswith(ds): self.set_drawstyle(ds) if len(linestyle) > len(ds): linestyle = linestyle[len(ds):] else: linestyle = '-' break if linestyle not in self._lineStyles: if linestyle in ls_mapper: linestyle = ls_mapper[linestyle] else: verbose.report('Unrecognized line style %s, %s' % (linestyle, type(linestyle))) if linestyle in [' ', '']: linestyle = 'None' self._linestyle = linestyle @docstring.dedent_interpd def set_marker(self, marker): """ Set the line marker ACCEPTS: :mod:`A valid marker style <matplotlib.markers>` Parameters ----------- marker: marker style See `~matplotlib.markers` for full description of possible argument """ self._marker.set_marker(marker) def set_markeredgecolor(self, ec): """ Set the marker edge color ACCEPTS: any matplotlib color """ if ec is None: ec = 'auto' self._markeredgecolor = ec def set_markeredgewidth(self, ew): """ Set the marker edge width in points ACCEPTS: float value in points """ if ew is None: ew = rcParams['lines.markeredgewidth'] self._markeredgewidth = ew def set_markerfacecolor(self, fc): """ Set the marker face color. ACCEPTS: any matplotlib color """ if fc is None: fc = 'auto' self._markerfacecolor = fc def set_markerfacecoloralt(self, fc): """ Set the alternate marker face color. ACCEPTS: any matplotlib color """ if fc is None: fc = 'auto' self._markerfacecoloralt = fc def set_markersize(self, sz): """ Set the marker size in points ACCEPTS: float """ self._markersize = sz def set_xdata(self, x): """ Set the data np.array for x ACCEPTS: 1D array """ self._xorig = x self._invalidx = True def set_ydata(self, y): """ Set the data np.array for y ACCEPTS: 1D array """ self._yorig = y self._invalidy = True def set_dashes(self, seq): """ Set the dash sequence, sequence of dashes with on off ink in points. If seq is empty or if seq = (None, None), the linestyle will be set to solid. ACCEPTS: sequence of on/off ink in points """ if seq == (None, None) or len(seq) == 0: self.set_linestyle('-') else: self.set_linestyle('--') self._dashSeq = seq # TODO: offset ignored for now def _draw_lines(self, renderer, gc, path, trans): self._lineFunc(renderer, gc, path, trans) def _draw_steps_pre(self, renderer, gc, path, trans): vertices = self._xy steps = ma.zeros((2 * len(vertices) - 1, 2), np.float_) steps[0::2, 0], steps[1::2, 0] = vertices[:, 0], vertices[:-1, 0] steps[0::2, 1], steps[1:-1:2, 1] = vertices[:, 1], vertices[1:, 1] path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_steps_post(self, renderer, gc, path, trans): vertices = self._xy steps = ma.zeros((2 * len(vertices) - 1, 2), np.float_) steps[::2, 0], steps[1:-1:2, 0] = vertices[:, 0], vertices[1:, 0] steps[0::2, 1], steps[1::2, 1] = vertices[:, 1], vertices[:-1, 1] path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_steps_mid(self, renderer, gc, path, trans): vertices = self._xy steps = ma.zeros((2 * len(vertices), 2), np.float_) steps[1:-1:2, 0] = 0.5 * (vertices[:-1, 0] + vertices[1:, 0]) steps[2::2, 0] = 0.5 * (vertices[:-1, 0] + vertices[1:, 0]) steps[0, 0] = vertices[0, 0] steps[-1, 0] = vertices[-1, 0] steps[0::2, 1], steps[1::2, 1] = vertices[:, 1], vertices[:, 1] path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_solid(self, renderer, gc, path, trans): gc.set_linestyle('solid') renderer.draw_path(gc, path, trans) def _draw_dashed(self, renderer, gc, path, trans): gc.set_linestyle('dashed') if self._dashSeq is not None: gc.set_dashes(0, self._dashSeq) renderer.draw_path(gc, path, trans) def _draw_dash_dot(self, renderer, gc, path, trans): gc.set_linestyle('dashdot') renderer.draw_path(gc, path, trans) def _draw_dotted(self, renderer, gc, path, trans): gc.set_linestyle('dotted') renderer.draw_path(gc, path, trans) def update_from(self, other): """copy properties from other to self""" Artist.update_from(self, other) self._linestyle = other._linestyle self._linewidth = other._linewidth self._color = other._color self._markersize = other._markersize self._markerfacecolor = other._markerfacecolor self._markerfacecoloralt = other._markerfacecoloralt self._markeredgecolor = other._markeredgecolor self._markeredgewidth = other._markeredgewidth self._dashSeq = other._dashSeq self._dashcapstyle = other._dashcapstyle self._dashjoinstyle = other._dashjoinstyle self._solidcapstyle = other._solidcapstyle self._solidjoinstyle = other._solidjoinstyle self._linestyle = other._linestyle self._marker = MarkerStyle(other._marker.get_marker(), other._marker.get_fillstyle()) self._drawstyle = other._drawstyle def _get_rgb_face(self, alt=False): facecolor = self._get_markerfacecolor(alt=alt) if is_string_like(facecolor) and facecolor.lower() == 'none': rgbFace = None else: rgbFace = colorConverter.to_rgb(facecolor) return rgbFace def _get_rgba_face(self, alt=False): facecolor = self._get_markerfacecolor(alt=alt) if is_string_like(facecolor) and facecolor.lower() == 'none': rgbaFace = None else: rgbaFace = colorConverter.to_rgba(facecolor, self._alpha) return rgbaFace def _get_rgba_ln_color(self, alt=False): return colorConverter.to_rgba(self._color, self._alpha) # some aliases.... def set_aa(self, val): 'alias for set_antialiased' self.set_antialiased(val) def set_c(self, val): 'alias for set_color' self.set_color(val) def set_ls(self, val): """alias for set_linestyle""" self.set_linestyle(val) def set_lw(self, val): """alias for set_linewidth""" self.set_linewidth(val) def set_mec(self, val): """alias for set_markeredgecolor""" self.set_markeredgecolor(val) def set_mew(self, val): """alias for set_markeredgewidth""" self.set_markeredgewidth(val) def set_mfc(self, val): """alias for set_markerfacecolor""" self.set_markerfacecolor(val) def set_mfcalt(self, val): """alias for set_markerfacecoloralt""" self.set_markerfacecoloralt(val) def set_ms(self, val): """alias for set_markersize""" self.set_markersize(val) def get_aa(self): """alias for get_antialiased""" return self.get_antialiased() def get_c(self): """alias for get_color""" return self.get_color() def get_ls(self): """alias for get_linestyle""" return self.get_linestyle() def get_lw(self): """alias for get_linewidth""" return self.get_linewidth() def get_mec(self): """alias for get_markeredgecolor""" return self.get_markeredgecolor() def get_mew(self): """alias for get_markeredgewidth""" return self.get_markeredgewidth() def get_mfc(self): """alias for get_markerfacecolor""" return self.get_markerfacecolor() def get_mfcalt(self, alt=False): """alias for get_markerfacecoloralt""" return self.get_markerfacecoloralt() def get_ms(self): """alias for get_markersize""" return self.get_markersize() def set_dash_joinstyle(self, s): """ Set the join style for dashed linestyles ACCEPTS: ['miter' | 'round' | 'bevel'] """ s = s.lower() if s not in self.validJoin: raise ValueError('set_dash_joinstyle passed "%s";\n' % (s, ) + 'valid joinstyles are %s' % (self.validJoin, )) self._dashjoinstyle = s def set_solid_joinstyle(self, s): """ Set the join style for solid linestyles ACCEPTS: ['miter' | 'round' | 'bevel'] """ s = s.lower() if s not in self.validJoin: raise ValueError('set_solid_joinstyle passed "%s";\n' % (s, ) + 'valid joinstyles are %s' % (self.validJoin, )) self._solidjoinstyle = s def get_dash_joinstyle(self): """ Get the join style for dashed linestyles """ return self._dashjoinstyle def get_solid_joinstyle(self): """ Get the join style for solid linestyles """ return self._solidjoinstyle def set_dash_capstyle(self, s): """ Set the cap style for dashed linestyles ACCEPTS: ['butt' | 'round' | 'projecting'] """ s = s.lower() if s not in self.validCap: raise ValueError('set_dash_capstyle passed "%s";\n' % (s, ) + 'valid capstyles are %s' % (self.validCap, )) self._dashcapstyle = s def set_solid_capstyle(self, s): """ Set the cap style for solid linestyles ACCEPTS: ['butt' | 'round' | 'projecting'] """ s = s.lower() if s not in self.validCap: raise ValueError('set_solid_capstyle passed "%s";\n' % (s, ) + 'valid capstyles are %s' % (self.validCap, )) self._solidcapstyle = s def get_dash_capstyle(self): """ Get the cap style for dashed linestyles """ return self._dashcapstyle def get_solid_capstyle(self): """ Get the cap style for solid linestyles """ return self._solidcapstyle def is_dashed(self): 'return True if line is dashstyle' return self._linestyle in ('--', '-.', ':')
class Line2D(Artist): """ A line - the line can have both a solid linestyle connecting all the vertices, and a marker at each vertex. Additionally, the drawing of the solid line is influenced by the drawstyle, eg one can create "stepped" lines in various styles. """ lineStyles = _lineStyles = { # hidden names deprecated '-' : '_draw_solid', '--' : '_draw_dashed', '-.' : '_draw_dash_dot', ':' : '_draw_dotted', 'None' : '_draw_nothing', ' ' : '_draw_nothing', '' : '_draw_nothing', } _drawStyles_l = { 'default' : '_draw_lines', 'steps-mid' : '_draw_steps_mid', 'steps-pre' : '_draw_steps_pre', 'steps-post' : '_draw_steps_post', } _drawStyles_s = { 'steps' : '_draw_steps_pre', } drawStyles = {} drawStyles.update(_drawStyles_l) drawStyles.update(_drawStyles_s) # Need a list ordered with long names first: drawStyleKeys = _drawStyles_l.keys() + _drawStyles_s.keys() # Referenced here to maintain API. These are defined in # MarkerStyle markers = MarkerStyle.markers filled_markers = MarkerStyle.filled_markers fillStyles = MarkerStyle.fillstyles zorder = 2 validCap = ('butt', 'round', 'projecting') validJoin = ('miter', 'round', 'bevel') def __str__(self): if self._label != "": return "Line2D(%s)"%(self._label) elif hasattr(self, '_x') and len(self._x) > 3: return "Line2D((%g,%g),(%g,%g),...,(%g,%g))"\ %(self._x[0],self._y[0],self._x[0],self._y[0],self._x[-1],self._y[-1]) elif hasattr(self, '_x'): return "Line2D(%s)"\ %(",".join(["(%g,%g)"%(x,y) for x,y in zip(self._x,self._y)])) else: return "Line2D()" def __init__(self, xdata, ydata, linewidth = None, # all Nones default to rc linestyle = None, color = None, marker = None, markersize = None, markeredgewidth = None, markeredgecolor = None, markerfacecolor = None, markerfacecoloralt = 'none', fillstyle = 'full', antialiased = None, dash_capstyle = None, solid_capstyle = None, dash_joinstyle = None, solid_joinstyle = None, pickradius = 5, drawstyle = None, markevery = None, **kwargs ): """ Create a :class:`~matplotlib.lines.Line2D` instance with *x* and *y* data in sequences *xdata*, *ydata*. The kwargs are :class:`~matplotlib.lines.Line2D` properties: %(Line2D)s See :meth:`set_linestyle` for a decription of the line styles, :meth:`set_marker` for a description of the markers, and :meth:`set_drawstyle` for a description of the draw styles. """ Artist.__init__(self) #convert sequences to numpy arrays if not iterable(xdata): raise RuntimeError('xdata must be a sequence') if not iterable(ydata): raise RuntimeError('ydata must be a sequence') if linewidth is None : linewidth=rcParams['lines.linewidth'] if linestyle is None : linestyle=rcParams['lines.linestyle'] if marker is None : marker=rcParams['lines.marker'] if color is None : color=rcParams['lines.color'] if markersize is None : markersize=rcParams['lines.markersize'] if antialiased is None : antialiased=rcParams['lines.antialiased'] if dash_capstyle is None : dash_capstyle=rcParams['lines.dash_capstyle'] if dash_joinstyle is None : dash_joinstyle=rcParams['lines.dash_joinstyle'] if solid_capstyle is None : solid_capstyle=rcParams['lines.solid_capstyle'] if solid_joinstyle is None : solid_joinstyle=rcParams['lines.solid_joinstyle'] if drawstyle is None : drawstyle='default' self.set_dash_capstyle(dash_capstyle) self.set_dash_joinstyle(dash_joinstyle) self.set_solid_capstyle(solid_capstyle) self.set_solid_joinstyle(solid_joinstyle) self.set_linestyle(linestyle) self.set_drawstyle(drawstyle) self.set_linewidth(linewidth) self.set_color(color) self._marker = MarkerStyle() self.set_marker(marker) self.set_markevery(markevery) self.set_antialiased(antialiased) self.set_markersize(markersize) self._dashSeq = None self.set_markerfacecolor(markerfacecolor) self.set_markerfacecoloralt(markerfacecoloralt) self.set_markeredgecolor(markeredgecolor) self.set_markeredgewidth(markeredgewidth) self.set_fillstyle(fillstyle) self.verticalOffset = None # update kwargs before updating data to give the caller a # chance to init axes (and hence unit support) self.update(kwargs) self.pickradius = pickradius self.ind_offset = 0 if is_numlike(self._picker): self.pickradius = self._picker self._xorig = np.asarray([]) self._yorig = np.asarray([]) self._invalidx = True self._invalidy = True self.set_data(xdata, ydata) def contains(self, mouseevent): """ Test whether the mouse event occurred on the line. The pick radius determines the precision of the location test (usually within five points of the value). Use :meth:`~matplotlib.lines.Line2D.get_pickradius` or :meth:`~matplotlib.lines.Line2D.set_pickradius` to view or modify it. Returns *True* if any values are within the radius along with ``{'ind': pointlist}``, where *pointlist* is the set of points within the radius. TODO: sort returned indices by distance """ if callable(self._contains): return self._contains(self,mouseevent) if not is_numlike(self.pickradius): raise ValueError("pick radius should be a distance") # Make sure we have data to plot if self._invalidy or self._invalidx: self.recache() if len(self._xy)==0: return False,{} # Convert points to pixels if self._transformed_path is None: self._transform_path() path, affine = self._transformed_path.get_transformed_path_and_affine() path = affine.transform_path(path) xy = path.vertices xt = xy[:, 0] yt = xy[:, 1] # Convert pick radius from points to pixels if self.figure == None: warning.warn('no figure set when check if mouse is on line') pixels = self.pickradius else: pixels = self.figure.dpi/72. * self.pickradius # the math involved in checking for containment (here and inside of segment_hits) assumes # that it is OK to overflow. In case the application has set the error flags such that # an exception is raised on overflow, we temporarily set the appropriate error flags here # and set them back when we are finished. olderrflags = np.seterr(all='ignore') try: # Check for collision if self._linestyle in ['None',None]: # If no line, return the nearby point(s) d = (xt-mouseevent.x)**2 + (yt-mouseevent.y)**2 ind, = np.nonzero(np.less_equal(d, pixels**2)) else: # If line, return the nearby segment(s) ind = segment_hits(mouseevent.x,mouseevent.y,xt,yt,pixels) finally: np.seterr(**olderrflags) ind += self.ind_offset # Debugging message if False and self._label != '': print("Checking line",self._label,"at",mouseevent.x,mouseevent.y) print('xt', xt) print('yt', yt) #print 'dx,dy', (xt-mouseevent.x)**2., (yt-mouseevent.y)**2. print('ind',ind) # Return the point(s) within radius return len(ind)>0,dict(ind=ind) def get_pickradius(self): 'return the pick radius used for containment tests' return self.pickradius def set_pickradius(self,d): """Sets the pick radius used for containment tests ACCEPTS: float distance in points """ self.pickradius = d def get_fillstyle(self): """ return the marker fillstyle """ return self._marker.get_fillstyle() def set_fillstyle(self, fs): """ Set the marker fill style; 'full' means fill the whole marker. 'none' means no filling; other options are for half-filled markers. ACCEPTS: ['full' | 'left' | 'right' | 'bottom' | 'top' | 'none'] """ self._marker.set_fillstyle(fs) def set_markevery(self, every): """ Set the markevery property to subsample the plot when using markers. Eg if ``markevery=5``, every 5-th marker will be plotted. *every* can be None Every point will be plotted an integer N Every N-th marker will be plotted starting with marker 0 A length-2 tuple of integers every=(start, N) will start at point start and plot every N-th marker ACCEPTS: None | integer | (startind, stride) """ self._markevery = every def get_markevery(self): 'return the markevery setting' return self._markevery def set_picker(self,p): """Sets the event picker details for the line. ACCEPTS: float distance in points or callable pick function ``fn(artist, event)`` """ if callable(p): self._contains = p else: self.pickradius = p self._picker = p def get_window_extent(self, renderer): bbox = Bbox.unit() bbox.update_from_data_xy(self.get_transform().transform(self.get_xydata()), ignore=True) # correct for marker size, if any if self._marker: ms = (self._markersize / 72.0 * self.figure.dpi) * 0.5 bbox = bbox.padded(ms) return bbox def set_axes(self, ax): Artist.set_axes(self, ax) if ax.xaxis is not None: self._xcid = ax.xaxis.callbacks.connect('units', self.recache_always) if ax.yaxis is not None: self._ycid = ax.yaxis.callbacks.connect('units', self.recache_always) set_axes.__doc__ = Artist.set_axes.__doc__ def set_data(self, *args): """ Set the x and y data ACCEPTS: 2D array (rows are x, y) or two 1D arrays """ if len(args)==1: x, y = args[0] else: x, y = args self.set_xdata(x) self.set_ydata(y) def recache_always(self): self.recache(always=True) def recache(self, always=False): if always or self._invalidx: xconv = self.convert_xunits(self._xorig) if ma.isMaskedArray(self._xorig): x = ma.asarray(xconv, np.float_) else: x = np.asarray(xconv, np.float_) x = x.ravel() else: x = self._x if always or self._invalidy: yconv = self.convert_yunits(self._yorig) if ma.isMaskedArray(self._yorig): y = ma.asarray(yconv, np.float_) else: y = np.asarray(yconv, np.float_) y = y.ravel() else: y = self._y if len(x)==1 and len(y)>1: x = x * np.ones(y.shape, np.float_) if len(y)==1 and len(x)>1: y = y * np.ones(x.shape, np.float_) if len(x) != len(y): raise RuntimeError('xdata and ydata must be the same length') x = x.reshape((len(x), 1)) y = y.reshape((len(y), 1)) if ma.isMaskedArray(x) or ma.isMaskedArray(y): self._xy = ma.concatenate((x, y), 1) else: self._xy = np.concatenate((x, y), 1) self._x = self._xy[:, 0] # just a view self._y = self._xy[:, 1] # just a view self._subslice = False if (self.axes and len(x) > 100 and self._is_sorted(x) and self.axes.name == 'rectilinear' and self.axes.get_xscale() == 'linear' and self._markevery is None): self._subslice = True if hasattr(self, '_path'): interpolation_steps = self._path._interpolation_steps else: interpolation_steps = 1 self._path = Path(self._xy, None, interpolation_steps) self._transformed_path = None self._invalidx = False self._invalidy = False def _transform_path(self, subslice=None): # Masked arrays are now handled by the Path class itself if subslice is not None: _path = Path(self._xy[subslice,:]) else: _path = self._path self._transformed_path = TransformedPath(_path, self.get_transform()) def set_transform(self, t): """ set the Transformation instance used by this artist ACCEPTS: a :class:`matplotlib.transforms.Transform` instance """ Artist.set_transform(self, t) self._invalidx = True self._invalidy = True def _is_sorted(self, x): "return true if x is sorted" if len(x)<2: return 1 return np.alltrue(x[1:]-x[0:-1]>=0) @allow_rasterization def draw(self, renderer): if self._invalidy or self._invalidx: self.recache() self.ind_offset = 0 # Needed for contains() method. if self._subslice and self.axes: # Need to handle monotonically decreasing case also... x0, x1 = self.axes.get_xbound() i0, = self._x.searchsorted([x0], 'left') i1, = self._x.searchsorted([x1], 'right') subslice = slice(max(i0-1, 0), i1+1) self.ind_offset = subslice.start self._transform_path(subslice) if self._transformed_path is None: self._transform_path() if not self.get_visible(): return renderer.open_group('line2d', self.get_gid()) gc = renderer.new_gc() self._set_gc_clip(gc) gc.set_foreground(self._color) gc.set_antialiased(self._antialiased) gc.set_linewidth(self._linewidth) gc.set_alpha(self._alpha) if self.is_dashed(): cap = self._dashcapstyle join = self._dashjoinstyle else: cap = self._solidcapstyle join = self._solidjoinstyle gc.set_joinstyle(join) gc.set_capstyle(cap) gc.set_snap(self.get_snap()) funcname = self._lineStyles.get(self._linestyle, '_draw_nothing') if funcname != '_draw_nothing': tpath, affine = self._transformed_path.get_transformed_path_and_affine() if len(tpath.vertices): self._lineFunc = getattr(self, funcname) funcname = self.drawStyles.get(self._drawstyle, '_draw_lines') drawFunc = getattr(self, funcname) drawFunc(renderer, gc, tpath, affine.frozen()) if self._marker: gc = renderer.new_gc() self._set_gc_clip(gc) rgbFace = self._get_rgb_face() rgbFaceAlt = self._get_rgb_face(alt=True) edgecolor = self.get_markeredgecolor() if is_string_like(edgecolor) and edgecolor.lower() == 'none': gc.set_linewidth(0) gc.set_foreground(rgbFace) else: gc.set_foreground(edgecolor) gc.set_linewidth(self._markeredgewidth) gc.set_alpha(self._alpha) marker = self._marker tpath, affine = self._transformed_path.get_transformed_points_and_affine() if len(tpath.vertices): # subsample the markers if markevery is not None markevery = self.get_markevery() if markevery is not None: if iterable(markevery): startind, stride = markevery else: startind, stride = 0, markevery if tpath.codes is not None: codes = tpath.codes[startind::stride] else: codes = None vertices = tpath.vertices[startind::stride] subsampled = Path(vertices, codes) else: subsampled = tpath snap = marker.get_snap_threshold() if type(snap) == float: snap = renderer.points_to_pixels(self._markersize) >= snap gc.set_snap(snap) gc.set_joinstyle(marker.get_joinstyle()) gc.set_capstyle(marker.get_capstyle()) marker_path = marker.get_path() marker_trans = marker.get_transform() w = renderer.points_to_pixels(self._markersize) if marker.get_marker() != ',': # Don't scale for pixels, and don't stroke them marker_trans = marker_trans.scale(w) else: gc.set_linewidth(0) renderer.draw_markers( gc, marker_path, marker_trans, subsampled, affine.frozen(), rgbFace) alt_marker_path = marker.get_alt_path() if alt_marker_path: alt_marker_trans = marker.get_alt_transform() alt_marker_trans = alt_marker_trans.scale(w) renderer.draw_markers( gc, alt_marker_path, alt_marker_trans, subsampled, affine.frozen(), rgbFaceAlt) gc.restore() gc.restore() renderer.close_group('line2d') def get_antialiased(self): return self._antialiased def get_color(self): return self._color def get_drawstyle(self): return self._drawstyle def get_linestyle(self): return self._linestyle def get_linewidth(self): return self._linewidth def get_marker(self): return self._marker.get_marker() def get_markeredgecolor(self): mec = self._markeredgecolor if (is_string_like(mec) and mec == 'auto'): if self._marker.get_marker() in ('.', ','): return self._color if self._marker.is_filled() and self.get_fillstyle() != 'none': return 'k' # Bad hard-wired default... else: return self._color else: return mec def get_markeredgewidth(self): return self._markeredgewidth def _get_markerfacecolor(self, alt=False): if alt: fc = self._markerfacecoloralt else: fc = self._markerfacecolor if (is_string_like(fc) and fc.lower() == 'auto'): if self.get_fillstyle() == 'none': return 'none' else: return self._color else: return fc def get_markerfacecolor(self): return self._get_markerfacecolor(alt=False) def get_markerfacecoloralt(self): return self._get_markerfacecolor(alt=True) def get_markersize(self): return self._markersize def get_data(self, orig=True): """ Return the xdata, ydata. If *orig* is *True*, return the original data """ return self.get_xdata(orig=orig), self.get_ydata(orig=orig) def get_xdata(self, orig=True): """ Return the xdata. If *orig* is *True*, return the original data, else the processed data. """ if orig: return self._xorig if self._invalidx: self.recache() return self._x def get_ydata(self, orig=True): """ Return the ydata. If *orig* is *True*, return the original data, else the processed data. """ if orig: return self._yorig if self._invalidy: self.recache() return self._y def get_path(self): """ Return the :class:`~matplotlib.path.Path` object associated with this line. """ if self._invalidy or self._invalidx: self.recache() return self._path def get_xydata(self): """ Return the *xy* data as a Nx2 numpy array. """ if self._invalidy or self._invalidx: self.recache() return self._xy def set_antialiased(self, b): """ True if line should be drawin with antialiased rendering ACCEPTS: [True | False] """ self._antialiased = b def set_color(self, color): """ Set the color of the line ACCEPTS: any matplotlib color """ self._color = color def set_drawstyle(self, drawstyle): """ Set the drawstyle of the plot 'default' connects the points with lines. The steps variants produce step-plots. 'steps' is equivalent to 'steps-pre' and is maintained for backward-compatibility. ACCEPTS: [ 'default' | 'steps' | 'steps-pre' | 'steps-mid' | 'steps-post' ] """ self._drawstyle = drawstyle def set_linewidth(self, w): """ Set the line width in points ACCEPTS: float value in points """ self._linewidth = w def set_linestyle(self, linestyle): """ Set the linestyle of the line (also accepts drawstyles) ================ ================= linestyle description ================ ================= ``'-'`` solid ``'--'`` dashed ``'-.'`` dash_dot ``':'`` dotted ``'None'`` draw nothing ``' '`` draw nothing ``''`` draw nothing ================ ================= 'steps' is equivalent to 'steps-pre' and is maintained for backward-compatibility. .. seealso:: :meth:`set_drawstyle` To set the drawing style (stepping) of the plot. ACCEPTS: [ ``'-'`` | ``'--'`` | ``'-.'`` | ``':'`` | ``'None'`` | ``' '`` | ``''`` ] and any drawstyle in combination with a linestyle, e.g. ``'steps--'``. """ for ds in self.drawStyleKeys: # long names are first in the list if linestyle.startswith(ds): self.set_drawstyle(ds) if len(linestyle) > len(ds): linestyle = linestyle[len(ds):] else: linestyle = '-' break if linestyle not in self._lineStyles: if linestyle in ls_mapper: linestyle = ls_mapper[linestyle] else: verbose.report('Unrecognized line style %s, %s' % (linestyle, type(linestyle))) if linestyle in [' ','']: linestyle = 'None' self._linestyle = linestyle @docstring.dedent_interpd def set_marker(self, marker): """ Set the line marker %(MarkerTable)s %(MarkerAccepts)s """ self._marker.set_marker(marker) def set_markeredgecolor(self, ec): """ Set the marker edge color ACCEPTS: any matplotlib color """ if ec is None : ec = 'auto' self._markeredgecolor = ec def set_markeredgewidth(self, ew): """ Set the marker edge width in points ACCEPTS: float value in points """ if ew is None : ew = rcParams['lines.markeredgewidth'] self._markeredgewidth = ew def set_markerfacecolor(self, fc): """ Set the marker face color. ACCEPTS: any matplotlib color """ if fc is None: fc = 'auto' self._markerfacecolor = fc def set_markerfacecoloralt(self, fc): """ Set the alternate marker face color. ACCEPTS: any matplotlib color """ if fc is None: fc = 'auto' self._markerfacecoloralt = fc def set_markersize(self, sz): """ Set the marker size in points ACCEPTS: float """ self._markersize = sz def set_xdata(self, x): """ Set the data np.array for x ACCEPTS: 1D array """ self._xorig = x self._invalidx = True def set_ydata(self, y): """ Set the data np.array for y ACCEPTS: 1D array """ self._yorig = y self._invalidy = True def set_dashes(self, seq): """ Set the dash sequence, sequence of dashes with on off ink in points. If seq is empty or if seq = (None, None), the linestyle will be set to solid. ACCEPTS: sequence of on/off ink in points """ if seq == (None, None) or len(seq)==0: self.set_linestyle('-') else: self.set_linestyle('--') self._dashSeq = seq # TODO: offset ignored for now def _draw_lines(self, renderer, gc, path, trans): self._lineFunc(renderer, gc, path, trans) def _draw_steps_pre(self, renderer, gc, path, trans): vertices = self._xy steps = ma.zeros((2*len(vertices)-1, 2), np.float_) steps[0::2, 0], steps[1::2, 0] = vertices[:, 0], vertices[:-1, 0] steps[0::2, 1], steps[1:-1:2, 1] = vertices[:, 1], vertices[1:, 1] path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_steps_post(self, renderer, gc, path, trans): vertices = self._xy steps = ma.zeros((2*len(vertices)-1, 2), np.float_) steps[::2, 0], steps[1:-1:2, 0] = vertices[:, 0], vertices[1:, 0] steps[0::2, 1], steps[1::2, 1] = vertices[:, 1], vertices[:-1, 1] path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_steps_mid(self, renderer, gc, path, trans): vertices = self._xy steps = ma.zeros((2*len(vertices), 2), np.float_) steps[1:-1:2, 0] = 0.5 * (vertices[:-1, 0] + vertices[1:, 0]) steps[2::2, 0] = 0.5 * (vertices[:-1, 0] + vertices[1:, 0]) steps[0, 0] = vertices[0, 0] steps[-1, 0] = vertices[-1, 0] steps[0::2, 1], steps[1::2, 1] = vertices[:, 1], vertices[:, 1] path = Path(steps) path = path.transformed(self.get_transform()) self._lineFunc(renderer, gc, path, IdentityTransform()) def _draw_solid(self, renderer, gc, path, trans): gc.set_linestyle('solid') renderer.draw_path(gc, path, trans) def _draw_dashed(self, renderer, gc, path, trans): gc.set_linestyle('dashed') if self._dashSeq is not None: gc.set_dashes(0, self._dashSeq) renderer.draw_path(gc, path, trans) def _draw_dash_dot(self, renderer, gc, path, trans): gc.set_linestyle('dashdot') renderer.draw_path(gc, path, trans) def _draw_dotted(self, renderer, gc, path, trans): gc.set_linestyle('dotted') renderer.draw_path(gc, path, trans) def update_from(self, other): 'copy properties from other to self' Artist.update_from(self, other) self._linestyle = other._linestyle self._linewidth = other._linewidth self._color = other._color self._markersize = other._markersize self._markerfacecolor = other._markerfacecolor self._markerfacecoloralt = other._markerfacecoloralt self._markeredgecolor = other._markeredgecolor self._markeredgewidth = other._markeredgewidth self._dashSeq = other._dashSeq self._dashcapstyle = other._dashcapstyle self._dashjoinstyle = other._dashjoinstyle self._solidcapstyle = other._solidcapstyle self._solidjoinstyle = other._solidjoinstyle self._linestyle = other._linestyle self._marker = MarkerStyle(other._marker.get_marker(), other._marker.get_fillstyle()) self._drawstyle = other._drawstyle def _get_rgb_face(self, alt=False): facecolor = self._get_markerfacecolor(alt=alt) if is_string_like(facecolor) and facecolor.lower()=='none': rgbFace = None else: rgbFace = colorConverter.to_rgb(facecolor) return rgbFace # some aliases.... def set_aa(self, val): 'alias for set_antialiased' self.set_antialiased(val) def set_c(self, val): 'alias for set_color' self.set_color(val) def set_ls(self, val): 'alias for set_linestyle' self.set_linestyle(val) def set_lw(self, val): 'alias for set_linewidth' self.set_linewidth(val) def set_mec(self, val): 'alias for set_markeredgecolor' self.set_markeredgecolor(val) def set_mew(self, val): 'alias for set_markeredgewidth' self.set_markeredgewidth(val) def set_mfc(self, val): 'alias for set_markerfacecolor' self.set_markerfacecolor(val) def set_mfcalt(self, val): 'alias for set_markerfacecoloralt' self.set_markerfacecoloralt(val) def set_ms(self, val): 'alias for set_markersize' self.set_markersize(val) def get_aa(self): 'alias for get_antialiased' return self.get_antialiased() def get_c(self): 'alias for get_color' return self.get_color() def get_ls(self): 'alias for get_linestyle' return self.get_linestyle() def get_lw(self): 'alias for get_linewidth' return self.get_linewidth() def get_mec(self): 'alias for get_markeredgecolor' return self.get_markeredgecolor() def get_mew(self): 'alias for get_markeredgewidth' return self.get_markeredgewidth() def get_mfc(self): 'alias for get_markerfacecolor' return self.get_markerfacecolor() def get_mfcalt(self, alt=False): 'alias for get_markerfacecoloralt' return self.get_markerfacecoloralt() def get_ms(self): 'alias for get_markersize' return self.get_markersize() def set_dash_joinstyle(self, s): """ Set the join style for dashed linestyles ACCEPTS: ['miter' | 'round' | 'bevel'] """ s = s.lower() if s not in self.validJoin: raise ValueError('set_dash_joinstyle passed "%s";\n' % (s,) + 'valid joinstyles are %s' % (self.validJoin,)) self._dashjoinstyle = s def set_solid_joinstyle(self, s): """ Set the join style for solid linestyles ACCEPTS: ['miter' | 'round' | 'bevel'] """ s = s.lower() if s not in self.validJoin: raise ValueError('set_solid_joinstyle passed "%s";\n' % (s,) + 'valid joinstyles are %s' % (self.validJoin,)) self._solidjoinstyle = s def get_dash_joinstyle(self): """ Get the join style for dashed linestyles """ return self._dashjoinstyle def get_solid_joinstyle(self): """ Get the join style for solid linestyles """ return self._solidjoinstyle def set_dash_capstyle(self, s): """ Set the cap style for dashed linestyles ACCEPTS: ['butt' | 'round' | 'projecting'] """ s = s.lower() if s not in self.validCap: raise ValueError('set_dash_capstyle passed "%s";\n' % (s,) + 'valid capstyles are %s' % (self.validCap,)) self._dashcapstyle = s def set_solid_capstyle(self, s): """ Set the cap style for solid linestyles ACCEPTS: ['butt' | 'round' | 'projecting'] """ s = s.lower() if s not in self.validCap: raise ValueError('set_solid_capstyle passed "%s";\n' % (s,) + 'valid capstyles are %s' % (self.validCap,)) self._solidcapstyle = s def get_dash_capstyle(self): """ Get the cap style for dashed linestyles """ return self._dashcapstyle def get_solid_capstyle(self): """ Get the cap style for solid linestyles """ return self._solidcapstyle def is_dashed(self): 'return True if line is dashstyle' return self._linestyle in ('--', '-.', ':')
def __init__( self, xdata, ydata, linewidth=None, # all Nones default to rc linestyle=None, color=None, marker=None, markersize=None, markeredgewidth=None, markeredgecolor=None, markerfacecolor=None, markerfacecoloralt='none', fillstyle='full', antialiased=None, dash_capstyle=None, solid_capstyle=None, dash_joinstyle=None, solid_joinstyle=None, pickradius=5, drawstyle=None, markevery=None, **kwargs): """ Create a :class:`~matplotlib.lines.Line2D` instance with *x* and *y* data in sequences *xdata*, *ydata*. The kwargs are :class:`~matplotlib.lines.Line2D` properties: %(Line2D)s See :meth:`set_linestyle` for a decription of the line styles, :meth:`set_marker` for a description of the markers, and :meth:`set_drawstyle` for a description of the draw styles. """ Artist.__init__(self) #convert sequences to numpy arrays if not iterable(xdata): raise RuntimeError('xdata must be a sequence') if not iterable(ydata): raise RuntimeError('ydata must be a sequence') if linewidth is None: linewidth = rcParams['lines.linewidth'] if linestyle is None: linestyle = rcParams['lines.linestyle'] if marker is None: marker = rcParams['lines.marker'] if color is None: color = rcParams['lines.color'] if markersize is None: markersize = rcParams['lines.markersize'] if antialiased is None: antialiased = rcParams['lines.antialiased'] if dash_capstyle is None: dash_capstyle = rcParams['lines.dash_capstyle'] if dash_joinstyle is None: dash_joinstyle = rcParams['lines.dash_joinstyle'] if solid_capstyle is None: solid_capstyle = rcParams['lines.solid_capstyle'] if solid_joinstyle is None: solid_joinstyle = rcParams['lines.solid_joinstyle'] if drawstyle is None: drawstyle = 'default' self.set_dash_capstyle(dash_capstyle) self.set_dash_joinstyle(dash_joinstyle) self.set_solid_capstyle(solid_capstyle) self.set_solid_joinstyle(solid_joinstyle) self.set_linestyle(linestyle) self.set_drawstyle(drawstyle) self.set_linewidth(linewidth) self.set_color(color) self._marker = MarkerStyle() self.set_marker(marker) self.set_markevery(markevery) self.set_antialiased(antialiased) self.set_markersize(markersize) self._dashSeq = None self.set_markerfacecolor(markerfacecolor) self.set_markerfacecoloralt(markerfacecoloralt) self.set_markeredgecolor(markeredgecolor) self.set_markeredgewidth(markeredgewidth) self.set_fillstyle(fillstyle) self.verticalOffset = None # update kwargs before updating data to give the caller a # chance to init axes (and hence unit support) self.update(kwargs) self.pickradius = pickradius self.ind_offset = 0 if is_numlike(self._picker): self.pickradius = self._picker self._xorig = np.asarray([]) self._yorig = np.asarray([]) self._invalidx = True self._invalidy = True self.set_data(xdata, ydata)
def __init__(self, xdata, ydata, linewidth=None, # all Nones default to rc linestyle=None, color=None, marker=None, markersize=None, markeredgewidth=None, markeredgecolor=None, markerfacecolor=None, markerfacecoloralt='none', fillstyle=None, antialiased=None, dash_capstyle=None, solid_capstyle=None, dash_joinstyle=None, solid_joinstyle=None, pickradius=5, drawstyle=None, markevery=None, **kwargs ): """ Create a :class:`~matplotlib.lines.Line2D` instance with *x* and *y* data in sequences *xdata*, *ydata*. The kwargs are :class:`~matplotlib.lines.Line2D` properties: %(Line2D)s See :meth:`set_linestyle` for a decription of the line styles, :meth:`set_marker` for a description of the markers, and :meth:`set_drawstyle` for a description of the draw styles. """ Artist.__init__(self) #convert sequences to numpy arrays if not iterable(xdata): raise RuntimeError('xdata must be a sequence') if not iterable(ydata): raise RuntimeError('ydata must be a sequence') if linewidth is None: linewidth = rcParams['lines.linewidth'] if linestyle is None: linestyle = rcParams['lines.linestyle'] if marker is None: marker = rcParams['lines.marker'] if color is None: color = rcParams['lines.color'] if markersize is None: markersize = rcParams['lines.markersize'] if antialiased is None: antialiased = rcParams['lines.antialiased'] if dash_capstyle is None: dash_capstyle = rcParams['lines.dash_capstyle'] if dash_joinstyle is None: dash_joinstyle = rcParams['lines.dash_joinstyle'] if solid_capstyle is None: solid_capstyle = rcParams['lines.solid_capstyle'] if solid_joinstyle is None: solid_joinstyle = rcParams['lines.solid_joinstyle'] if drawstyle is None: drawstyle = 'default' self._dashcapstyle = None self._dashjoinstyle = None self._solidjoinstyle = None self._solidcapstyle = None self.set_dash_capstyle(dash_capstyle) self.set_dash_joinstyle(dash_joinstyle) self.set_solid_capstyle(solid_capstyle) self.set_solid_joinstyle(solid_joinstyle) self._linestyles = None self._drawstyle = None self._linewidth = None self._dashSeq = None self._dashOffset = 0 self.set_linestyle(linestyle) self.set_drawstyle(drawstyle) self.set_linewidth(linewidth) self._color = None self.set_color(color) self._marker = MarkerStyle() self.set_marker(marker) self._markevery = None self._markersize = None self._antialiased = None self.set_markevery(markevery) self.set_antialiased(antialiased) self.set_markersize(markersize) self._markeredgecolor = None self._markeredgewidth = None self._markerfacecolor = None self._markerfacecoloralt = None self.set_markerfacecolor(markerfacecolor) self.set_markerfacecoloralt(markerfacecoloralt) self.set_markeredgecolor(markeredgecolor) self.set_markeredgewidth(markeredgewidth) self.set_fillstyle(fillstyle) self.verticalOffset = None # update kwargs before updating data to give the caller a # chance to init axes (and hence unit support) self.update(kwargs) self.pickradius = pickradius self.ind_offset = 0 if is_numlike(self._picker): self.pickradius = self._picker self._xorig = np.asarray([]) self._yorig = np.asarray([]) self._invalidx = True self._invalidy = True self._x = None self._y = None self._xy = None self._path = None self._transformed_path = None self._subslice = False self._x_filled = None # used in subslicing; only x is needed self.set_data(xdata, ydata)
def _hack_linedraw(self, line, rotate_marker=None): ''' Modifies the draw method of a :class:`matplotlib.lines.Line2D` object to draw different stard and end marker. Keyword arguments: *line*: Line to be modified Accepts: Line2D *rotate_marker*: If set, the end marker will be rotated in direction of their corresponding path. Accepts: boolean ''' assert isinstance(line, Line2D) def new_draw(self_line, renderer): def new_draw_markers(self_renderer, gc, marker_path, marker_trans, path, trans, rgbFace=None): # get the drawn path for determin the rotation angle line_vertices = self_line._get_transformed_path().get_fully_transformed_path().vertices vertices = path.vertices if len(vertices) == 1: line_set = [[default_marker, vertices]] else: if rotate_marker: dx, dy = np.array(line_vertices[-1]) - np.array(line_vertices[-2]) end_rot = MarkerStyle(end.get_marker()) end_rot._transform += Affine2D().rotate(np.arctan2(dy, dx) - np.pi / 2) else: end_rot = end if len(vertices) == 2: line_set = [[start, vertices[0:1]], [end_rot, vertices[1:2]]] else: line_set = [[start, vertices[0:1]], [default_marker, vertices[1:-1]], [end_rot, vertices[-1:]]] for marker, points in line_set: scale = 0.5 if isinstance(marker.get_marker(), np.ndarray) else 1 transform = marker.get_transform() + Affine2D().scale(scale * self_line._markersize) old_draw_markers(gc, marker.get_path(), transform, Path(points), trans, rgbFace) old_draw_markers = renderer.draw_markers renderer.draw_markers = MethodType(new_draw_markers, renderer) old_draw(renderer) renderer.draw_markers = old_draw_markers default_marker = line._marker # check if marker is set and visible if default_marker: start = MarkerStyle(self._get_key("plot.startmarker")) if start.get_marker() is None: start = default_marker end = MarkerStyle(self._get_key("plot.endmarker")) if end.get_marker() is None: end = default_marker if rotate_marker is None: rotate_marker = self._get_key("plot.rotatemarker") old_draw = line.draw line.draw = MethodType(new_draw, line) line._markerhacked = True