def __call__(self, X, alpha=1.0):
"""
X is either a scalar or an array (of any dimension).
If scalar, a tuple of rgba values is returned, otherwise
an array with the new shape = oldshape+(4,). If the X-values
are integers, then they are used as indices into the array.
If they are floating point, then they must be in the
interval (0.0, 1.0).
Alpha must be a scalar.
"""
if not self._isinit: self._init()
alpha = min(alpha, 1.0) # alpha must be between 0 and 1
alpha = max(alpha, 0.0)
self._lut[:-3, -1] = alpha
mask_bad = None
if isinstance(X, (int, float)):
vtype = 'scalar'
xa = array([X])
else:
vtype = 'array'
xma = ma.asarray(X)
xa = xma.filled(0)
mask_bad = ma.getmaskorNone(xma)
if typecode(xa) in typecodes['Float']:
xa = where(xa == 1.0, 0.9999999, xa) # Tweak so 1.0 is in range.
xa = (xa * self.N).astype(Int)
mask_under = xa < 0
mask_over = xa > self.N-1
xa = where(mask_under, self._i_under, xa)
xa = where(mask_over, self._i_over, xa)
if mask_bad is not None: # and sometrue(mask_bad):
xa = where(mask_bad, self._i_bad, xa)
#print 'types', typecode(self._lut), typecode(xa), xa.shape
rgba = take(self._lut, xa)
if vtype == 'scalar':
rgba = tuple(rgba[0,:])
#print rgba[0,1:10,:] # Now the same for numpy, numeric...
return rgba
def __call__(self, X, alpha=1.0):
"""
X is either a scalar or an array (of any dimension).
If scalar, a tuple of rgba values is returned, otherwise
an array with the new shape = oldshape+(4,). If the X-values
are integers, then they are used as indices into the array.
If they are floating point, then they must be in the
interval (0.0, 1.0).
Alpha must be a scalar.
"""
if not self._isinit: self._init()
alpha = min(alpha, 1.0) # alpha must be between 0 and 1
alpha = max(alpha, 0.0)
self._lut[:-3, -1] = alpha
mask_bad = None
if isinstance(X, (int, float)):
vtype = 'scalar'
xa = array([X])
else:
vtype = 'array'
xma = ma.asarray(X)
xa = xma.filled(0)
mask_bad = ma.getmaskorNone(xma)
if typecode(xa) in typecodes['Float']:
xa = where(xa == 1.0, 0.9999999, xa) # Tweak so 1.0 is in range.
xa = (xa * self.N).astype(Int)
mask_under = xa < 0
mask_over = xa > self.N - 1
xa = where(mask_under, self._i_under, xa)
xa = where(mask_over, self._i_over, xa)
if mask_bad is not None: # and sometrue(mask_bad):
xa = where(mask_bad, self._i_bad, xa)
#print 'types', typecode(self._lut), typecode(xa), xa.shape
rgba = take(self._lut, xa)
if vtype == 'scalar':
rgba = tuple(rgba[0, :])
#print rgba[0,1:10,:] # Now the same for numpy, numeric...
return rgba
def __call__(self, value):
if isinstance(value, (int, float)):
vtype = 'scalar'
val = ma.array([value])
else:
vtype = 'array'
val = ma.asarray(value)
self.autoscale(val)
vmin, vmax = self.vmin, self.vmax
if vmin > vmax:
raise ValueError("minvalue must be less than or equal to maxvalue")
elif vmin == vmax:
return 0. * value
else:
if self.clip:
mask = ma.getmaskorNone(val)
val = ma.array(clip(val.filled(vmax), vmin, vmax), mask=mask)
result = (val - vmin) / float(vmax - vmin)
if vtype == 'scalar':
result = result[0]
return result
def __init__(self, ax, *args, **kwargs):
"""
Draw contour lines or filled regions, depending on
whether keyword arg 'filled' is False (default) or True.
The first argument of the initializer must be an axes
object. The remaining arguments and keyword arguments
are described in ContourSet.contour_doc.
"""
self.ax = ax
self.filled = kwargs.get('filled', False)
self.linewidths = kwargs.get('linewidths', None)
self.alpha = kwargs.get('alpha', 1.0)
self.origin = kwargs.get('origin', None)
self.extent = kwargs.get('extent', None)
cmap = kwargs.get('cmap', None)
self.colors = kwargs.get('colors', None)
norm = kwargs.get('norm', None)
self.clip_ends = kwargs.get('clip_ends', True)
self.antialiased = kwargs.get('antialiased', True)
self.nchunk = kwargs.get('nchunk', 0)
if self.origin is not None: assert(self.origin in
['lower', 'upper', 'image'])
if self.extent is not None: assert(len(self.extent) == 4)
if cmap is not None: assert(isinstance(cmap, Colormap))
if self.colors is not None and cmap is not None:
raise ValueError('Either colors or cmap must be None')
if self.origin == 'image': self.origin = rcParams['image.origin']
x, y, z = self._contour_args(*args) # also sets self.levels,
# self.layers
if self.colors is not None:
cmap = ListedColormap(self.colors, N=len(self.layers))
if self.filled:
self.collections = silent_list('PolyCollection')
else:
self.collections = silent_list('LineCollection')
# label lists must be initialized here
self.cl = []
self.cl_cvalues = []
kw = {'cmap': cmap}
if norm is not None:
kw['norm'] = norm
ScalarMappable.__init__(self, **kw) # sets self.cmap;
self._process_colors()
if self.filled:
if self.linewidths is None:
self.linewidths = 0.05 # Good default for Postscript.
if iterable(self.linewidths):
self.linewidths = self.linewidths[0]
#C = _contour.Cntr(x, y, z.filled(), z.mask())
C = _contour.Cntr(x, y, z.filled(), ma.getmaskorNone(z))
lowers = self.levels[:-1]
uppers = self.levels[1:]
for level, level_upper, color in zip(lowers, uppers, self.tcolors):
nlist = C.trace(level, level_upper, points = 1,
nchunk = self.nchunk)
col = PolyCollection(nlist,
linewidths = (self.linewidths,),
antialiaseds = (self.antialiased,))
col.set_color(color) # sets both facecolor and edgecolor
self.ax.add_collection(col)
self.collections.append(col)
else:
tlinewidths = self._process_linewidths()
#C = _contour.Cntr(x, y, z.filled(), z.mask())
C = _contour.Cntr(x, y, z.filled(), ma.getmaskorNone(z))
for level, color, width in zip(self.levels, self.tcolors, tlinewidths):
nlist = C.trace(level, points = 1)
col = LineCollection(nlist)
col.set_color(color)
col.set_linewidth(width)
if level < 0.0 and self.monochrome:
col.set_linestyle((0, (6.,6.)),)
col.set_label(str(level)) # only for self-documentation
self.ax.add_collection(col)
self.collections.append(col)
## check: seems like set_xlim should also be inside
if not self.ax.ishold():
self.ax.cla()
self.ax.set_xlim((ma.minimum(x), ma.maximum(x)))
self.ax.set_ylim((ma.minimum(y), ma.maximum(y)))
def __init__(self, ax, *args, **kwargs):
"""
Draw contour lines or filled regions, depending on
whether keyword arg 'filled' is False (default) or True.
The first argument of the initializer must be an axes
object. The remaining arguments and keyword arguments
are described in ContourSet.contour_doc.
"""
self.ax = ax
self.levels = kwargs.get('levels', None)
self.filled = kwargs.get('filled', False)
self.linewidths = kwargs.get('linewidths', None)
self.alpha = kwargs.get('alpha', 1.0)
self.origin = kwargs.get('origin', None)
self.extent = kwargs.get('extent', None)
cmap = kwargs.get('cmap', None)
self.colors = kwargs.get('colors', None)
norm = kwargs.get('norm', None)
self.clip_ends = kwargs.get('clip_ends', None) ########
self.extend = kwargs.get('extend', 'neither')
if self.clip_ends is not None:
warnings.warn("'clip_ends' has been replaced by 'extend'")
self.levels = self.levels[1:-1] # discard specified end levels
self.extend = 'both' # regenerate end levels
self.antialiased = kwargs.get('antialiased', True)
self.nchunk = kwargs.get('nchunk', 0)
self.locator = kwargs.get('locator', None)
if self.origin is not None:
assert (self.origin in ['lower', 'upper', 'image'])
if self.extent is not None: assert (len(self.extent) == 4)
if cmap is not None: assert (isinstance(cmap, Colormap))
if self.colors is not None and cmap is not None:
raise ValueError('Either colors or cmap must be None')
if self.origin == 'image': self.origin = rcParams['image.origin']
x, y, z = self._contour_args(*args) # also sets self.levels,
# self.layers
if self.colors is not None:
cmap = ListedColormap(self.colors, N=len(self.layers))
if self.filled:
self.collections = silent_list('PolyCollection')
else:
self.collections = silent_list('LineCollection')
# label lists must be initialized here
self.cl = []
self.cl_cvalues = []
kw = {'cmap': cmap}
if norm is not None:
kw['norm'] = norm
ScalarMappable.__init__(self, **kw) # sets self.cmap;
self._process_colors()
if self.filled:
if self.linewidths is None:
self.linewidths = 0.05 # Good default for Postscript.
if iterable(self.linewidths):
self.linewidths = self.linewidths[0]
#C = _contour.Cntr(x, y, z.filled(), z.mask())
C = _contour.Cntr(x, y, z.filled(), ma.getmaskorNone(z))
lowers = self._levels[:-1]
uppers = self._levels[1:]
for level, level_upper, color in zip(lowers, uppers, self.tcolors):
nlist = C.trace(level,
level_upper,
points=0,
nchunk=self.nchunk)
col = PolyCollection(nlist,
linewidths=(self.linewidths, ),
antialiaseds=(self.antialiased, ),
facecolors=color,
edgecolors='None')
self.ax.add_collection(col)
self.collections.append(col)
else:
tlinewidths = self._process_linewidths()
self.tlinewidths = tlinewidths
#C = _contour.Cntr(x, y, z.filled(), z.mask())
C = _contour.Cntr(x, y, z.filled(), ma.getmaskorNone(z))
for level, color, width in zip(self.levels, self.tcolors,
tlinewidths):
nlist = C.trace(level, points=0)
col = LineCollection(nlist, colors=color, linewidths=width)
if level < 0.0 and self.monochrome:
col.set_linestyle(
(0, rcParams['contour.negative_linestyle']))
col.set_label(str(level)) # only for self-documentation
self.ax.add_collection(col)
self.collections.append(col)
x0 = ma.minimum(x)
x1 = ma.maximum(x)
y0 = ma.minimum(y)
y1 = ma.maximum(y)
self.ax.update_datalim([(x0, y0), (x1, y1)])
self.ax.set_xlim((x0, x1))
self.ax.set_ylim((y0, y1))
def __init__(self, ax, *args, **kwargs):
"""
Draw contour lines or filled regions, depending on
whether keyword arg 'filled' is False (default) or True.
The first argument of the initializer must be an axes
object. The remaining arguments and keyword arguments
are described in ContourSet.contour_doc.
"""
self.ax = ax
self.levels = kwargs.get('levels', None)
self.filled = kwargs.get('filled', False)
self.linewidths = kwargs.get('linewidths', None)
self.alpha = kwargs.get('alpha', 1.0)
self.origin = kwargs.get('origin', None)
self.extent = kwargs.get('extent', None)
cmap = kwargs.get('cmap', None)
self.colors = kwargs.get('colors', None)
norm = kwargs.get('norm', None)
self.clip_ends = kwargs.get('clip_ends', None) ########
self.extend = kwargs.get('extend', 'neither')
if self.clip_ends is not None:
warnings.warn("'clip_ends' has been replaced by 'extend'")
self.levels = self.levels[1:-1] # discard specified end levels
self.extend = 'both' # regenerate end levels
self.antialiased = kwargs.get('antialiased', True)
self.nchunk = kwargs.get('nchunk', 0)
self.locator = kwargs.get('locator', None)
if self.origin is not None: assert(self.origin in
['lower', 'upper', 'image'])
if self.extent is not None: assert(len(self.extent) == 4)
if cmap is not None: assert(isinstance(cmap, Colormap))
if self.colors is not None and cmap is not None:
raise ValueError('Either colors or cmap must be None')
if self.origin == 'image': self.origin = rcParams['image.origin']
x, y, z = self._contour_args(*args) # also sets self.levels,
# self.layers
if self.colors is not None:
cmap = ListedColormap(self.colors, N=len(self.layers))
if self.filled:
self.collections = silent_list('PolyCollection')
else:
self.collections = silent_list('LineCollection')
# label lists must be initialized here
self.cl = []
self.cl_cvalues = []
kw = {'cmap': cmap}
if norm is not None:
kw['norm'] = norm
ScalarMappable.__init__(self, **kw) # sets self.cmap;
self._process_colors()
if self.filled:
if self.linewidths is None:
self.linewidths = 0.05 # Good default for Postscript.
if iterable(self.linewidths):
self.linewidths = self.linewidths[0]
#C = _contour.Cntr(x, y, z.filled(), z.mask())
C = _contour.Cntr(x, y, z.filled(), ma.getmaskorNone(z))
lowers = self._levels[:-1]
uppers = self._levels[1:]
for level, level_upper, color in zip(lowers, uppers, self.tcolors):
nlist = C.trace(level, level_upper, points = 0,
nchunk = self.nchunk)
col = PolyCollection(nlist,
linewidths = (self.linewidths,),
antialiaseds = (self.antialiased,),
facecolors= color,
edgecolors= 'None')
self.ax.add_collection(col)
self.collections.append(col)
else:
tlinewidths = self._process_linewidths()
self.tlinewidths = tlinewidths
#C = _contour.Cntr(x, y, z.filled(), z.mask())
C = _contour.Cntr(x, y, z.filled(), ma.getmaskorNone(z))
for level, color, width in zip(self.levels, self.tcolors, tlinewidths):
nlist = C.trace(level, points = 0)
col = LineCollection(nlist,
colors = color,
linewidths = width)
if level < 0.0 and self.monochrome:
col.set_linestyle((0, rcParams['contour.negative_linestyle']))
col.set_label(str(level)) # only for self-documentation
self.ax.add_collection(col)
self.collections.append(col)
x0 = ma.minimum(x)
x1 = ma.maximum(x)
y0 = ma.minimum(y)
y1 = ma.maximum(y)
self.ax.update_datalim([(x0,y0), (x1,y1)])
self.ax.set_xlim((x0, x1))
self.ax.set_ylim((y0, y1))
def __init__(self, ax, *args, **kwargs):
"""
Draw contour lines or filled regions, depending on
whether keyword arg 'filled' is False (default) or True.
The first argument of the initializer must be an axes
object. The remaining arguments and keyword arguments
are described in ContourSet.contour_doc.
"""
self.ax = ax
self.filled = kwargs.get('filled', False)
self.linewidths = kwargs.get('linewidths', None)
self.alpha = kwargs.get('alpha', 1.0)
self.origin = kwargs.get('origin', None)
self.extent = kwargs.get('extent', None)
cmap = kwargs.get('cmap', None)
self.colors = kwargs.get('colors', None)
norm = kwargs.get('norm', None)
self.clip_ends = kwargs.get('clip_ends', True)
self.antialiased = kwargs.get('antialiased', True)
self.nchunk = kwargs.get('nchunk', 0)
if self.origin is not None:
assert (self.origin in ['lower', 'upper', 'image'])
if self.extent is not None: assert (len(self.extent) == 4)
if cmap is not None: assert (isinstance(cmap, Colormap))
if self.colors is not None and cmap is not None:
raise ValueError('Either colors or cmap must be None')
if self.origin == 'image': self.origin = rcParams['image.origin']
x, y, z = self._contour_args(*args) # also sets self.levels,
# self.layers
if self.colors is not None:
cmap = ListedColormap(self.colors, N=len(self.layers))
if self.filled:
self.collections = silent_list('PolyCollection')
else:
self.collections = silent_list('LineCollection')
# label lists must be initialized here
self.cl = []
self.cl_cvalues = []
kw = {'cmap': cmap}
if norm is not None:
kw['norm'] = norm
ScalarMappable.__init__(self, **kw) # sets self.cmap;
self._process_colors()
if self.filled:
if self.linewidths is None:
self.linewidths = 0.05 # Good default for Postscript.
if iterable(self.linewidths):
self.linewidths = self.linewidths[0]
#C = _contour.Cntr(x, y, z.filled(), z.mask())
C = _contour.Cntr(x, y, z.filled(), ma.getmaskorNone(z))
lowers = self.levels[:-1]
uppers = self.levels[1:]
for level, level_upper, color in zip(lowers, uppers, self.tcolors):
nlist = C.trace(level,
level_upper,
points=1,
nchunk=self.nchunk)
col = PolyCollection(nlist,
linewidths=(self.linewidths, ),
antialiaseds=(self.antialiased, ))
col.set_color(color) # sets both facecolor and edgecolor
self.ax.add_collection(col)
self.collections.append(col)
else:
tlinewidths = self._process_linewidths()
#C = _contour.Cntr(x, y, z.filled(), z.mask())
C = _contour.Cntr(x, y, z.filled(), ma.getmaskorNone(z))
for level, color, width in zip(self.levels, self.tcolors,
tlinewidths):
nlist = C.trace(level, points=1)
col = LineCollection(nlist)
col.set_color(color)
col.set_linewidth(width)
if level < 0.0 and self.monochrome:
col.set_linestyle((0, (6., 6.)), )
col.set_label(str(level)) # only for self-documentation
self.ax.add_collection(col)
self.collections.append(col)
## check: seems like set_xlim should also be inside
if not self.ax.ishold():
self.ax.cla()
self.ax.set_xlim((ma.minimum(x), ma.maximum(x)))
self.ax.set_ylim((ma.minimum(y), ma.maximum(y)))
