def init_points(ax, points):
pt_coll = PatchCollection(points, alpha=0.6)
colors = ['limegreen'] * len(points)
pt_coll.set_facecolors(colors)
pt_coll.set_edgecolor('black')
ax.add_collection(pt_coll)
return pt_coll, colors
def add_pmts(ax=None, color='b', linewidth=1):
x0 = 27 # 9 times the inner radius
y0 = 6 * 3 * 2 / np.sqrt(3) # 6 times the outer radius
if ax is None:
ax = plt.gca()
per_row = [9, 10, 11, 10, 11, 10, 11, 10, 9]
polys = []
for row, num_pmts in enumerate(per_row):
y = row * 3 * np.sqrt(3)
for pmt in range(num_pmts):
x = 6 * pmt
if row in (0, 8):
x += 3
elif row % 2 == 0:
x -= 3
polys.append(RegularPolygon((x - x0, y - y0), 6, radius=6 / np.sqrt(3)))
col = PatchCollection(polys)
col.set_facecolors('none')
col.set_edgecolors(color)
col.set_linewidths(linewidth)
ax.add_artist(col)
return col
def Cover(self, Sublist):
for h in Sublist:
if (len(h) > 3):
HullList = self.ListHullPoints(h)
self.CoverPolyPoints(HullList)
else:
self.CoverPolyPoints(h)
p = PatchCollection(patches, alpha=0.4)
PatchColor = []
LegendPatch = []
i = 1
for patch in patches:
c1 = np.random.rand(1, 1)[0]
c2 = np.random.rand(1, 1)[0]
c3 = np.random.rand(1, 1)[0]
c = (c1[0], c2[0], c3[0])
PatchColor.append(c)
ax.add_patch(
Polygon(patch.get_xy(), closed=True, ec=c, lw=1, fill=False))
PatchPoints = patch.get_xy()
x = (self.DrawPoints(PatchPoints))[0]
y = (self.DrawPoints(PatchPoints))[1]
PointColor = colors.to_rgba_array(c)
Label = 'Conv ' + str(i)
LegendPatch.append(mpatches.Patch(color=c, label=Label))
self.ax.scatter(x, y, s=15, c=PointColor, marker='o', label='Poly')
i += 1
p.set_facecolors(PatchColor)
self.ax.add_collection(p)
self.ax.legend(handles=LegendPatch)
def get_circles_for_scatter(x, y, color='black', edgecolor='none', colormap='jet', radius=0.01, colornorm=None, alpha=1, radiusnorm=None, maxradius=1, minradius=0):
cmap = plt.get_cmap(colormap)
if colornorm is not None:
colornorm = plt.Normalize(colornorm[0], colornorm[1], clip=True)
# setup normalizing for radius scale factor (if used)
if type(radius) is list or type(radius) is np.array or type(radius) is np.ndarray:
if radiusnorm is None:
radiusnorm = matplotlib.colors.Normalize(np.min(radius), np.max(radius), clip=True)
else:
radiusnorm = matplotlib.colors.Normalize(radiusnorm[0], radiusnorm[1], clip=True)
# make circles
points = np.array([x, y]).T
circles = [None for i in range(len(x))]
for i, pt in enumerate(points):
if type(radius) is list or type(radius) is np.array or type(radius) is np.ndarray:
r = radiusnorm(radius[i])*(maxradius-minradius) + minradius
else:
r = radius
circles[i] = patches.Circle( pt, radius=r )
# make a collection of those circles
cc = PatchCollection(circles, cmap=cmap, norm=colornorm) # potentially useful option: match_original=True
# set properties for collection
cc.set_edgecolors(edgecolor)
if type(color) is list or type(color) is np.array or type(color) is np.ndarray:
cc.set_array(color)
else:
cc.set_facecolors(color)
cc.set_alpha(alpha)
return cc
def get_annotations(tiles_w, image_size, indices, coordinates): patches = [] colors = [] for index in range(canvas.shape[0]): x = index % tiles_w y = int(np.floor(index / tiles_w)) tile = int(indices[index]) if tile == -1: continue else: (lat, lon) = coordinates[tile] if np.isnan(lat) or np.isnan(lon): continue fc = lonlat2rgba(lon, lat) rect = mpatches.Rectangle((x * image_size, y * image_size), image_size, image_size) patches.append(rect) colors.append(fc) #image[((y + 1) * image_size, x * image_size):(x + 1) * image_size] = canvas[index] #colors = 100 * np.random.rand(len(patches)) collection = PatchCollection(patches, alpha=0.35) collection.set_facecolors(colors) collection.set_edgecolors(colors) collection.set_linewidth(0.1) #collection.set_array(np.array(colors)) return collection
def init_polygons(ax):
polygons = read.polygons()
poly_coll = PatchCollection(polygons, alpha=0.6)
poly_colors = plt.get_cmap('Pastel1')(np.arange(.10, 1.99, .24))
poly_coll.set_facecolors(poly_colors)
poly_coll.set_edgecolor('black')
ax.add_collection(poly_coll)
return poly_coll, poly_colors
def get_ellipses_for_scatter(ax, x, y, color='black', edgecolor='none', colormap='jet', radius=0.01, colornorm=None, alpha=1, radiusnorm=None, maxradius=1, minradius=0):
# get ellipse size to make it a circle given axes
x0, y0 = ax.transAxes.transform((ax.get_ylim()[0],ax.get_xlim()[0]))
x1, y1 = ax.transAxes.transform((ax.get_ylim()[1],ax.get_xlim()[1]))
dx = x1-x0
dy = y1-y0
maxd = max(dx,dy)
cmap = plt.get_cmap(colormap)
if colornorm is not None:
colornorm = plt.Normalize(colornorm[0], colornorm[1], clip=True)
# setup normalizing for radius scale factor (if used)
if type(radius) is list or type(radius) is np.array or type(radius) is np.ndarray:
if radiusnorm is None:
radiusnorm = matplotlib.colors.Normalize(np.min(radius), np.max(radius), clip=True)
else:
radiusnorm = matplotlib.colors.Normalize(radiusnorm[0], radiusnorm[1], clip=True)
# make circles
points = np.array([x, y]).T
ellipses = [None for i in range(len(x))]
for i, pt in enumerate(points):
if type(radius) is list or type(radius) is np.array or type(radius) is np.ndarray:
r = radiusnorm(radius[i])*(maxradius-minradius) + minradius
else:
r = radius
width = r*2*maxd/dx
height = r*2*maxd/dy
ellipses[i] = patches.Ellipse( pt, width, height)
# make a collection of those circles
cc = PatchCollection(ellipses, cmap=cmap, norm=colornorm) # potentially useful option: match_original=True
# set properties for collection
cc.set_edgecolors(edgecolor)
if type(color) is list or type(color) is np.array or type(color) is np.ndarray:
cc.set_array(color)
else:
cc.set_facecolors(color)
cc.set_alpha(alpha)
return cc
def render(self, patch_size=0.5, alpha=1.0, x_offset=100):
'''Draws the legend graphic and saves it to a file.'''
n = len(self.colors)
s = patch_size
# This offset is transformed to "data" coordinates (inches)
left_offset = (-s * 1.5) - (x_offset / self.dpi)
# Create grid to plot the artists
grid = np.concatenate((
np.zeros(n).reshape(n, 1),
np.arange(-n, 1)[1:].reshape(n, 1)
), axis=1)
plt.text(left_offset, 1.1, 'Legend', family='sans-serif',
size=14, weight='bold', color='#ffffff')
patches = []
for i in range(n):
# Add a rectangle
rect = mpatches.Rectangle(grid[i] - [0, 0], s, s, ec='none')
patches.append(rect)
self.__label__(grid[i], self.labels[i], x_offset)
collection = PatchCollection(patches, alpha=alpha)
# Space the patches and the text labels
collection.set_offset_position('data')
collection.set_offsets(np.array([
[left_offset, 0]
]))
collection.set_facecolors(self.colors)
#collection.set_edgecolor('#ffffff') # Draw color for box outlines
self.axis.add_collection(collection)
plt.axis('equal')
plt.axis('off')
plt.savefig(self.file_path, facecolor=self.bg_color, dpi=self.dpi,
pad_inches=0)
return self.file_path
def scatter(ax, x, y, color='black', colormap='jet', radius=0.01, colornorm=None, alpha=1, radiusnorm=None, maxradius=1, minradius=0, edgecolors='none'):
# color can be array-like, or a matplotlib color
# I can't figure out how to control alpha through the individual circle patches.. it seems to get overwritten by the collection. low priority!
cmap = plt.get_cmap(colormap)
if colornorm is not None:
colornorm = plt.Normalize(colornorm[0], colornorm[1], clip=True)
# setup normalizing for radius scale factor (if used)
if type(radius) is list or type(radius) is np.array or type(radius) is np.ndarray:
if radiusnorm is None:
radiusnorm = matplotlib.colors.Normalize(np.min(radius), np.max(radius), clip=True)
else:
radiusnorm = matplotlib.colors.Normalize(radiusnorm[0], radiusnorm[1], clip=True)
# make circles
points = np.array([x, y]).T
circles = [None for i in range(len(x))]
for i, pt in enumerate(points):
if type(radius) is list or type(radius) is np.array or type(radius) is np.ndarray:
r = radiusnorm(radius[i])*(maxradius-minradius) + minradius
else:
r = radius
circles[i] = patches.Circle( pt, radius=r )
# make a collection of those circles
cc = PatchCollection(circles, cmap=cmap, norm=colornorm) # potentially useful option: match_original=True
# set properties for collection
cc.set_edgecolors(edgecolors)
if type(color) is list or type(color) is np.array or type(color) is np.ndarray:
cc.set_array(color)
else:
cc.set_facecolors(color)
cc.set_alpha(alpha)
# add collection to axis
ax.add_collection(cc)
def circles(x, y, s, c='b', vmin=None, vmax=None, **kwargs):
"""
Make a scatter of circles plot of x vs y, where x and y are sequence
like objects of the same lengths. The size of circles are in data scale.
Parameters
----------
x,y : scalar or array_like, shape (n, )
Input data
s : scalar or array_like, shape (n, )
Radius of circle in data unit.
c : color or sequence of color, optional, default : 'b'
`c` can be a single color format string, or a sequence of color
specifications of length `N`, or a sequence of `N` numbers to be
mapped to colors using the `cmap` and `norm` specified via kwargs.
Note that `c` should not be a single numeric RGB or RGBA sequence
because that is indistinguishable from an array of values
to be colormapped. (If you insist, use `color` instead.)
`c` can be a 2-D array in which the rows are RGB or RGBA, however.
vmin, vmax : scalar, optional, default: None
`vmin` and `vmax` are used in conjunction with `norm` to normalize
luminance data. If either are `None`, the min and max of the
color array is used.
kwargs : `~matplotlib.collections.Collection` properties
Eg. alpha, edgecolor(ec), facecolor(fc), linewidth(lw), linestyle(ls),
norm, cmap, transform, etc.
Returns
-------
paths : `~matplotlib.collections.PathCollection`
Examples
--------
a = np.arange(11)
circles(a, a, a*0.2, c=a, alpha=0.5, edgecolor='none')
plt.colorbar()
License
--------
This code is under [The BSD 3-Clause License]
(http://opensource.org/licenses/BSD-3-Clause)
"""
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import Circle
from matplotlib.collections import PatchCollection
if np.isscalar(c):
kwargs.setdefault('color', c)
c = None
if 'fc' in kwargs: kwargs.setdefault('facecolor', kwargs.pop('fc'))
if 'ec' in kwargs: kwargs.setdefault('edgecolor', kwargs.pop('ec'))
if 'ls' in kwargs: kwargs.setdefault('linestyle', kwargs.pop('ls'))
if 'lw' in kwargs: kwargs.setdefault('linewidth', kwargs.pop('lw'))
patches = [Circle((x_, y_), s_) for x_, y_, s_ in np.broadcast(x, y, s)]
collection = PatchCollection(patches, **kwargs)
if c is not None:
collection.set_array(np.asarray(c))
collection.set_clim(vmin, vmax)
collection.set_facecolors('none')
collection.set_facecolor('none')
if (kwargs['facecolor'] != 'none'):
collection.set_facecolors(kwargs['facecolor']);
collection.set_facecolor(kwargs['facecolor']);
ax = plt.gca()
ax.add_collection(collection)
ax.autoscale_view()
if c is not None:
plt.sci(collection)
return collection
def circles(x, y, s, c='b', vmin=None, vmax=None, **kwargs):
"""
Make a scatter of circles plot of x vs y, where x and y are sequence
like objects of the same lengths. The size of circles are in data scale.
Parameters
----------
x,y : scalar or array_like, shape (n, )
Input data
s : scalar or array_like, shape (n, )
Radius of circle in data unit.
c : color or sequence of color, optional, default : 'b'
`c` can be a single color format string, or a sequence of color
specifications of length `N`, or a sequence of `N` numbers to be
mapped to colors using the `cmap` and `norm` specified via kwargs.
Note that `c` should not be a single numeric RGB or RGBA sequence
because that is indistinguishable from an array of values
to be colormapped. (If you insist, use `color` instead.)
`c` can be a 2-D array in which the rows are RGB or RGBA, however.
vmin, vmax : scalar, optional, default: None
`vmin` and `vmax` are used in conjunction with `norm` to normalize
luminance data. If either are `None`, the min and max of the
color array is used.
kwargs : `~matplotlib.collections.Collection` properties
Eg. alpha, edgecolor(ec), facecolor(fc), linewidth(lw), linestyle(ls),
norm, cmap, transform, etc.
Returns
-------
paths : `~matplotlib.collections.PathCollection`
Examples
--------
a = np.arange(11)
circles(a, a, a*0.2, c=a, alpha=0.5, edgecolor='none')
plt.colorbar()
License
--------
This code is under [The BSD 3-Clause License]
(http://opensource.org/licenses/BSD-3-Clause)
"""
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import Circle
from matplotlib.collections import PatchCollection
if np.isscalar(c):
kwargs.setdefault('color', c)
c = None
if 'fc' in kwargs: kwargs.setdefault('facecolor', kwargs.pop('fc'))
if 'ec' in kwargs: kwargs.setdefault('edgecolor', kwargs.pop('ec'))
if 'ls' in kwargs: kwargs.setdefault('linestyle', kwargs.pop('ls'))
if 'lw' in kwargs: kwargs.setdefault('linewidth', kwargs.pop('lw'))
patches = [Circle((x_, y_), s_) for x_, y_, s_ in np.broadcast(x, y, s)]
collection = PatchCollection(patches, **kwargs)
if c is not None:
collection.set_array(np.asarray(c))
collection.set_clim(vmin, vmax)
collection.set_facecolors('none')
collection.set_facecolor('none')
if (kwargs['facecolor'] != 'none'):
collection.set_facecolors(kwargs['facecolor'])
collection.set_facecolor(kwargs['facecolor'])
ax = plt.gca()
ax.add_collection(collection)
ax.autoscale_view()
if c is not None:
plt.sci(collection)
return collection
def plot(self,
canvas,
show_balls=True,
show_adults=True,
show_hulls=False,
color='purple'):
"""
Plot a single level of a `CoverTree`
See the example at example-covertree_
Parameters
----------
canvas : :class:`bokeh.plotting.figure.Figure`
as obtained from :code:`canvas = bokeh.plotting.figure()`
show_balls : bool
Draw the covering balls at this level.
Default: True
show_adults : bool
Draw the adults at this level.
Default: True
show_hulls : bool
Draw the convex hulls of the childeren of each adult.
Note -- this works only with matplotlib for now, not bokeh.
Default: False
color : str
Name of color to use for cover-tree balls and hulls.
Default: 'purple'
References
----------
.. _example-covertree: http://nbviewer.jupyter.org/github/geomdata/gda-public/blob/master/examples/example-covertree.ipynb
"""
# fix the aspect ratio!
all_xs = self.pointcloud.coords.values[:, 0]
all_ys = self.pointcloud.coords.values[:, 1]
xmid = (all_xs.max() + all_xs.min()) / 2.0
ymid = (all_ys.max() + all_ys.min()) / 2.0
span = max([
all_xs.max() - xmid, xmid - all_xs.min(),
all_ys.max() - ymid, ymid - all_ys.min()
])
if type(canvas).__module__ == 'bokeh.plotting.figure':
canvas_type = "bokeh"
from bokeh.models import ColumnDataSource, Range1d
import bokeh.plotting
elif type(canvas).__module__ == 'matplotlib.axes._subplots':
canvas_type = "pyplot"
import matplotlib.pyplot as plt
from matplotlib.collections import PolyCollection, PatchCollection
from matplotlib.patches import Circle, Ellipse, Polygon
import matplotlib.colors as colors
# fix the aspect ratio!
canvas.set_aspect('equal')
canvas.set_xlim([xmid - span, xmid + span])
canvas.set_ylim([ymid - span, ymid + span])
else:
raise NotImplementedError(
"canvas must be a bokeh.plotting.figure(). You gave me {}".
format(type(canvas)))
pc = self.covertree.pointcloud
all_xs = pc.coords.values[:, 0]
all_ys = pc.coords.values[:, 1]
data, title = self.plot_data_title(show_balls=show_balls,
show_adults=show_adults)
# fix the aspect ratio!
xmean = all_xs.mean()
ymean = all_ys.mean()
span = max([
all_xs.max() - xmean, xmean - all_xs.min(),
all_ys.max() - ymean, ymean - all_ys.min()
])
if canvas_type == "pyplot":
xs = data['xs']
ys = data['ys']
rs = data['rs']
if show_balls:
patches = []
rgbas = []
cc = colors.ColorConverter()
for i in range(len(xs)):
patches.append(Circle(xy=(xs[i], ys[i]), radius=rs[i]))
# have to set the alpha value manually.
rgba = list(cc.to_rgba(color))
rgba[3] = 0.2
rgbas.append(tuple(rgba))
p = PatchCollection(patches, edgecolor='none')
p.set_facecolors(rgbas)
canvas.add_collection(p)
if show_adults:
canvas.scatter(x=xs, y=ys, color='blue', alpha=1.)
if show_hulls:
from scipy.spatial import ConvexHull
patches = []
rgbas = []
cc = colors.ColorConverter()
for ai in self.adults:
children = pc.coords.values[self.children[ai], :]
if children.shape[0] >= 3:
hull = ConvexHull(children).vertices
poly_data = children[hull, :]
patches.append(Polygon(poly_data))
elif children.shape[0] == 2:
d = cdist(children[[0], :], children[[1], :])[0, 0]
patches.append(
Circle(xy=pc.coords.values[ai, :], radius=d))
else: # singleton
patches.append(
Circle(xy=pc.coords.values[ai, :],
radius=0.5 * self.radius))
rgba = list(cc.to_rgba(color))
rgba[3] = 0.2
rgbas.append(tuple(rgba))
p = PatchCollection(patches, edgecolor=color)
p.set_facecolors(rgbas)
canvas.add_collection(p)
pass
elif canvas_type == "bokeh":
source = ColumnDataSource(data=data)
canvas.title.text = title
canvas.x_range = Range1d(xmean - span, xmean + span)
canvas.y_range = Range1d(ymean - span, ymean + span)
if show_balls:
canvas.circle('xs',
'ys',
source=source,
radius='rs',
color=color,
alpha=0.2)
if show_adults:
canvas.circle('xs',
'ys',
source=source,
size=4,
color='blue',
alpha=1.)
if show_hulls:
raise NotImplementedError("No hulls in Bokeh yet. Use pyplot.")
#canvas.circle(all_xs, all_ys, color='black', alpha=0.2, size=0.5)
return source
def plot_counties(
ax,
counties,
values=None,
edgecolors=None,
contourcolor="white",
hatch_surround=None,
xlim=None,
ylim=None,
background=True,
xticks=True,
yticks=True,
grid=True,
frame=True,
xlabel="Longitude [in dec. degrees]",
ylabel="Latitude [in dec. degrees]",
lw=1):
polygons = [r["shape"] for r in counties.values()]
# extend german borders :S and then shrink them again after unifying
# gets rid of many holes at the county boundaries
contour = cascaded_union([pol.buffer(0.01)
for pol in polygons]).buffer(-0.01)
xmin, ymin, xmax, ymax = contour.bounds
if xlim is None:
xlim = [xmin, xmax]
if ylim is None:
ylim = [ymin, ymax]
surround = PolygonPatch(Polygon([(xlim[0], ylim[0]), (xlim[0], ylim[1]), (
xlim[1], ylim[1]), (xlim[1], ylim[0])]).difference(contour))
contour = PolygonPatch(contour, lw=lw)
pc = PatchCollection([PolygonPatch(p, lw=lw)
for p in polygons], cmap=matplotlib.cm.magma, alpha=1.0)
if values is not None:
if isinstance(values, (dict, OrderedDict)):
values = np.array([values.setdefault(r, np.nan)
for r in counties.keys()])
elif isinstance(values, str):
values = np.array([r.setdefault(values, np.nan)
for r in counties.values()])
else:
assert np.size(values) == len(counties), "Number of values ({}) doesn't match number of counties ({})!".format(
np.size(values), len(counties))
pc.set_clim(0, 10)
nans = np.isnan(values)
values[nans] = 0
values = np.ma.MaskedArray(values, mask=nans)
pc.set(array=values, cmap='magma')
else:
pc.set_facecolors("none")
if edgecolors is not None:
if isinstance(edgecolors, (dict, OrderedDict)):
edgecolors = np.array([edgecolors.setdefault(r, "none")
for r in counties.keys()])
elif isinstance(edgecolors, str):
edgecolors = np.array([r.setdefault(edgecolors, "none")
for r in counties.values()])
pc.set_edgecolors(edgecolors)
else:
pc.set_edgecolors("none")
if hatch_surround is not None:
surround.set_hatch(hatch_surround)
surround.set_facecolor("none")
ax.add_patch(surround)
cb = plt.colorbar(pc, shrink=0.6)
cb.set_ticks([0,5,10])
#cb.set_yticks([0.00004])
ax.add_collection(pc)
if contourcolor is not None:
contour.set_edgecolor(contourcolor)
contour.set_facecolor("none")
ax.add_patch(contour)
if isinstance(background, bool):
ax.patch.set_visible(background)
else:
ax.patch.set_color(background)
ax.grid(grid)
ax.set_frame_on(frame)
ax.set_xlim(*xlim)
ax.set_ylim(*ylim)
ax.set_aspect(1.43)
if xlabel:
ax.set_xlabel(xlabel, fontsize=14)
if ylabel:
ax.set_ylabel(ylabel, fontsize=14)
ax.tick_params(axis="x", which="both", bottom=xticks, labelbottom=xticks)
ax.tick_params(axis="y", which="both", left=yticks, labelleft=yticks)
#plt.colorbar()
return pc, contour, surround
def get_wedges_for_heading_plot(x, y, color, orientation, size_radius=0.1, size_angle=20, colormap='jet', colornorm=None, size_radius_range=(0.01,.1), size_radius_norm=None, edgecolor='none', alpha=1, flip=True, deg=True, nskip=0, center_offset_fraction=0.75):
'''
Returns a Patch Collection of Wedges, with arbitrary color and orientation
Outputs:
Patch Collection
Inputs:
x, y - x and y positions (np.array or list, each of length N)
color - values to color wedges by (np.array or list, length N), OR color string.
colormap - specifies colormap to use (string, eg. 'jet')
norm - specifies range you'd like to normalize to,
if none, scales to min/max of color array (2-tuple, eg. (0,1) )
orientation - angles are in degrees, use deg=False to convert radians to degrees
size_radius - radius of wedge, in same units as x, y. Can be list or np.array, length N, for changing sizes
size_radius_norm - specifies range you'd like to normalize size_radius to, if size_radius is a list/array
should be tuple, eg. (0.01, .1)
size_angle - angular extent of wedge, degrees. Can be list or np.array, length N, for changing sizes
edgecolor - color for lineedges, string or np.array of length N
alpha - transparency (single value, between 0 and 1)
flip - flip orientations by 180 degrees, default = True
nskip - allows you to skip between points to make the points clearer, nskip=1 skips every other point
center_offset_fraction - (float in range (0,1) ) - 0 means (x,y) is at the tip, 1 means (x,y) is at the edge
'''
cmap = plt.get_cmap(colormap)
# norms
if colornorm is None and type(color) is not str:
colornorm = plt.Normalize(np.min(color), np.max(color))
elif type(color) is not str:
colornorm = plt.Normalize(colornorm[0], colornorm[1])
if size_radius_norm is None:
size_radius_norm = plt.Normalize(np.min(size_radius), np.max(size_radius), clip=True)
else:
size_radius_norm = plt.Normalize(size_radius_norm[0], size_radius_norm[1], clip=True)
indices_to_plot = np.arange(0, len(x), nskip+1)
# fix orientations
if type(orientation) is list:
orientation = np.array(orientation)
if deg is False:
orientation = orientation*180./np.pi
if flip:
orientation += 180
flycons = []
n = 0
for i in indices_to_plot:
# wedge parameters
if type(size_radius) is list or type(size_radius) is np.array or type(size_radius) is np.ndarray:
r = size_radius_norm(size_radius[i])*(size_radius_range[1]-size_radius_range[0]) + size_radius_range[0]
else: r = size_radius
if type(size_angle) is list or type(size_angle) is np.array or type(size_angle) is np.ndarray:
angle_swept = size_radius[i]
else: angle_swept = size_radius
theta1 = orientation[i] - size_angle/2.
theta2 = orientation[i] + size_angle/2.
center = [x[i], y[i]]
center[0] -= np.cos(orientation[i]*np.pi/180.)*r*center_offset_fraction
center[1] -= np.sin(orientation[i]*np.pi/180.)*r*center_offset_fraction
wedge = patches.Wedge(center, r, theta1, theta2)
flycons.append(wedge)
# add collection and color it
pc = PatchCollection(flycons, cmap=cmap, norm=colornorm)
# set properties for collection
pc.set_edgecolors(edgecolor)
if type(color) is list or type(color) is np.array or type(color) is np.ndarray:
if type(color) is list:
color = np.asarray(color)
pc.set_array(color[indices_to_plot])
else:
pc.set_facecolors(color)
pc.set_alpha(alpha)
return pc
def plot_hexa_im(im,
cmap=matplotlib.cm.gray,
hex_shape=False,
ax=None,
zigzag=False,
minv=None,
maxv=None):
"""
Plot a hexagonal image. The image is assumed to be represented with the zig-zag parameterization.
:param im: the image; 2D ndarray
"""
im[im == im.min()] = np.median(im)
if zigzag:
m1, m2 = centered_meshgrid(im.shape[1], im.shape[0])
x, y = zigzaghexa2cartesian(m1, m2)
else:
# a bit strage to use centered_*zigzag*hexa_grid here, but it works
m1, m2 = centered_meshgrid(im.shape[1], im.shape[0])
x, y = hexa2cartesian(m1, m2)
r = (np.minimum(im.shape[0], im.shape[1]) - 1) / 2.
if ax is None:
fig, ax = plt.subplots()
x = x.flatten()
y = y.flatten()
m1 = m1.flatten()
m2 = m2.flatten()
r = r.flatten()
im = im.flatten()
if hex_shape:
# Circular image; remove hexagons outside radius of the largest circle insribed in the grid
if zigzag:
n1, n2 = zigzaghexa2hexa(m1, m2)
else:
n1 = m1
n2 = m2
dist = hexa_manhattan_dist(n1, n2, 0, 0)
x = x[dist <= r]
y = y[dist <= r]
im = im[dist <= r]
# Flip the y-axis; in matplotlib's patches code, the y axis points up but we want it to point down
# as is common in image processing.
y = np.max(y) - y
patch_list = [_hex_at(x[i], y[i]) for i in range(x.size)]
p = PatchCollection(
patch_list,
cmap=cmap,
linewidths=0,
antialiaseds=10,
)
colors = im.reshape(-1, 3) - im.min()
colors /= colors.max()
p.set_facecolors(colors) # set colors
if minv or maxv:
p.set_clim([minv, maxv]) # scale color range
ax.add_collection(p)
ax.set_xlim(np.min(x) - 0.5, np.max(x) + 0.5)
ax.set_ylim(np.min(y) - 0.5, np.max(y) + 0.5)
# plt.axis('equal')
plt.axis('off')
plt.tight_layout()
kyst2[:,0][i],kyst2[:,1][i],zzz= lla2ecef(kyst2[:,0][i],kyst2[:,1][i],0)
tmp = np.copy(-kyst2[:,0])
kyst2[:,0]=kyst2[:,1]
kyst2[:,1]=tmp
polygon = Polygon(kyst2, True)
patches_flds.append(polygon)
kyst2 = np.array([])
kll = np.array([])
klo = np.array([])
#----------------------------------------------------------
#--
p_blks = PatchCollection(patches_blks,alpha=0.2)
p_blks.set_facecolors('none')#(1, 1, 0, 0.0))
p_blks.set_edgecolors((0, 0, 0, 1.0))
ax.add_collection(p_blks)
#--
#--
p_flds = PatchCollection(patches_flds,alpha=0.4)
p_flds.set_facecolors((.5, .5, .5, .5))
p_flds.set_edgecolors((0, 0, 0, 1.0))
ax.add_collection(p_flds)
#--
colors = 100*np.random.rand(len(patches))
p = PatchCollection(patches, alpha=0.4)
p.set_array(np.array(colors))
p.set_edgecolors((0, 0, 0, 1.0))
ax.add_collection(p)
def plot(self, canvas, style="covertree"):
r""" Plot a CDER model, using matplotlib or bokeh
There are several options to help visualize various aspects of the
model. Typically, one wants to overlay this with the plots from the
underlying :class:`multidim.PointCloud` and
:class:`multidim.covertree.CoverTree` objects.
Parameters
----------
canvas : object
An instance of
`bokeh.plotting.figure.Figure` as in
:code:`canvas = bokeh.plotting.figure()`
or an instance of :class:`matplotlib.axes._subplots.AxesSubplot` as
in :code:`axes,canvas = matplotlib.pyplot.subplots()`
style : str
options are "gaussians", "covertree", "heatmap", "hulls",
"expatriots", and "predictions". Colors are generally obtained
from the label names.
See Also
--------
:func:`multidim.PointCloud.plot`
:func:`multidim.covertree.CoverTree.plot`
"""
if self.covertree is None or self.gaussians is None:
raise RuntimeError("You must 'fit' first, before plotting.")
# fix the aspect ratio!
all_xs = self.covertree.pointcloud.coords.values[:, 0]
all_ys = self.covertree.pointcloud.coords.values[:, 1]
xmid = (all_xs.max() + all_xs.min()) / 2.0
ymid = (all_ys.max() + all_ys.min()) / 2.0
span = max([
all_xs.max() - xmid, xmid - all_xs.min(),
all_ys.max() - ymid, ymid - all_ys.min()
])
if type(canvas).__module__ == 'bokeh.plotting.figure':
canvas_type = "bokeh"
import bokeh.plotting
from bokeh.models import ColumnDataSource, Range1d
# fix the aspect ratio!
canvas.x_range = Range1d(xmid - span, xmid + span)
canvas.y_range = Range1d(ymid - span, ymid + span)
elif type(canvas).__module__ == 'matplotlib.axes._subplots':
canvas_type = "pyplot"
import matplotlib.pyplot as plt
from matplotlib.collections import PolyCollection, PatchCollection
from matplotlib.patches import Circle, Ellipse, Polygon
import matplotlib.colors as colors
# fix the aspect ratio!
canvas.set_aspect('equal')
canvas.set_xlim([xmid - span, xmid + span])
canvas.set_ylim([ymid - span, ymid + span])
else:
raise NotImplementedError(
"canvas must be a bokeh.plotting.figure() or a matplotlib.pyplot.subplots()[1]. You gave me {}"
.format(type(canvas)))
if style == "gaussians":
Xms = []
Yms = []
R1s = []
R2s = []
As = []
Cs = []
Ws = []
for g in self.gaussians:
Xms.append(g['mean'][0])
Yms.append(g['mean'][1])
R1s.append(g['std'][0] * 2 /
0.75) # 0.75 bokeh oval distortion
R2s.append(g['std'][1] * 2)
As.append(np.arctan2(g['rotation'][0, 1], g['rotation'][0, 0]))
Cs.append(g['label'])
Ws.append(g['weight'])
Ws = np.array(Ws)
# Ws = np.log2(numpy.array(Ws)+1)
Wmax = Ws.max()
if canvas_type == "bokeh":
canvas.oval(Xms,
Yms,
angle=As,
width=R1s,
height=R2s,
alpha=Ws / Wmax,
color=Cs,
line_width=0,
line_color='black')
elif canvas_type == "pyplot":
patches = []
rgbas = []
CC = colors.ColorConverter()
for i in range(len(Xms)):
patches.append(
Ellipse(xy=(Xms[i], Yms[i]),
width=R1s[i] * 0.75,
height=R2s[i],
angle=As[i] * 180 / np.pi))
# have to manually set the alpha value
rgba = list(CC.to_rgba(Cs[i]))
rgba[3] = Ws[i] / Wmax
rgbas.append(tuple(rgba))
p = PatchCollection(patches, edgecolor='none')
p.set_facecolors(rgbas)
canvas.add_collection(p)
pass
elif style == "heatmap":
# This could probably use self.runit instead.
xy = []
min_x = xmid - span
max_x = xmid + span
min_y = ymid - span
max_y = ymid + span
dx = (max_x - min_x) / 64.
dy = (max_y - min_y) / 64.
for x in np.arange(min_x, max_x, dx):
for y in np.arange(min_y, max_y, dy):
xy.append((x + dx / 2, y + dy / 2))
xy = np.array(xy)
z_by_label = np.ndarray(shape=(xy.shape[0],
self.all_labels.shape[0]))
for i, point in enumerate(xy):
integrals, labels = self.evaluate(xy[[i], :])
for j, label in enumerate(self.all_labels):
z_by_label[i,
j] = np.linalg.norm(integrals[labels == label],
1)
# z_by_label = np.log2(z_by_label + 1)
# z_by_label = z_by_label - z_by_label.min()
z_by_label = z_by_label / z_by_label.max()
# z_by_label = z_by_label**0.5
if canvas_type == "bokeh":
for j, label in enumerate(self.all_labels):
canvas.rect(xy[:, 0] - dx / 2,
xy[:, 1] - dy / 2,
width=dx,
height=dy,
color=label,
alpha=z_by_label[:, j])
elif canvas_type == "pyplot":
patches = []
rgbas = []
CC = colors.ColorConverter()
for j, label in enumerate(self.all_labels):
for i in range(xy.shape[0]):
corners = np.array(
[[xy[i, 0] - dx / 2, xy[i, 1] - dx / 2],
[xy[i, 0] + dx / 2, xy[i, 1] - dx / 2],
[xy[i, 0] + dx / 2, xy[i, 1] + dy / 2],
[xy[i, 0] - dx / 2, xy[i, 1] + dy / 2]])
patches.append(Polygon(corners))
# have to manually set the alpha value
rgba = list(CC.to_rgba(label))
rgba[3] = z_by_label[i, j]
rgbas.append(tuple(rgba))
p = PatchCollection(patches, edgecolor='none')
p.set_facecolors(rgbas)
canvas.add_collection(p)
pass
elif style == "hulls":
from scipy.spatial import ConvexHull
if canvas_type == "bokeh":
raise NotImplementedError("No hulls in Bokeh yet. Use pyplot.")
elif canvas_type == "pyplot":
maxwt = max([g['weight'] for g in self.gaussians])
patches = []
rgbas = []
cc = colors.ColorConverter()
for i, g in enumerate(self.gaussians):
if g['count'] > 3:
a = g['index']
l = g['level']
cl = self.covertree[l]
label = g['label']
children = self.covertree.pointcloud.coords.values[
cl.children[a], :]
hull = ConvexHull(children).vertices
poly_data = children[hull, :]
patches.append(Polygon(poly_data))
# have to manually set the alpha value
rgba = list(cc.to_rgba(label))
rgba[3] = g['weight'] * 1.0 / maxwt
rgbas.append(tuple(rgba))
p = PatchCollection(patches, edgecolor='none')
p.set_facecolors(rgbas)
canvas.add_collection(p)
pass
elif style == "entropy":
N = len(self.covertree)
C = np.zeros(shape=(N, ))
Q = np.zeros(shape=(N, ))
for g in self.gaussians:
C[g['level']:] = C[g['level']:] + 1.0
Q[g['level']:] = Q[g['level']:] + (1.0 - g['entropy'])
canvas.scatter(range(N), C, color="red", legend="coords", size=4)
canvas.line(range(N), C, color="red")
canvas.scatter(range(N), Q, color="blue", legend="bits", size=2)
canvas.line(range(N), Q, color="blue")
canvas.legend.location = "top_left"
pass
elif style == "expatriots":
Xms = []
Yms = []
R1s = []
R2s = []
As = []
Cs = []
Ws = []
for g in self.gaussians:
Xms.append(g['mean'][0])
Yms.append(g['mean'][1])
R1s.append(g['std'][0] * 2 /
0.75) # 0.75 bokeh oval distortion
R2s.append(g['std'][1] * 2)
As.append(np.arctan2(g['rotation'][0, 1], g['rotation'][0, 0]))
Cs.append(g['label'])
Ws.append(g['weight'])
Ws = np.log2(np.array(Ws) + 1)
Wmax = Ws.max()
if canvas_type == "bokeh":
canvas.oval(Xms,
Yms,
angle=As,
width=R1s,
height=R2s,
alpha=Ws / Wmax,
color=Cs,
line_width=0,
line_color='black')
elif canvas_type == "pyplot":
patches = []
rgbas = []
CC = colors.ColorConverter()
for i in range(len(Xms)):
patches.append(
Ellipse(xy=(Xms[i], Yms[i]),
width=R1s[i] * 0.75,
height=R2s[i],
angle=As[i] * 180 / np.pi))
# have to manually set the alpha value
rgba = list(CC.to_rgba(Cs[i]))
rgba[3] = Ws[i] / Wmax
rgbas.append(tuple(rgba))
p = PatchCollection(patches, edgecolor='none')
p.set_facecolors(rgbas)
canvas.add_collection(p)
pass
elif style == "predictions":
pass
elif style == "covertree":
Xs = []
Ys = []
Rs = []
Cs = []
Ws = []
for g in self.gaussians:
Xs.append(g['adult'][0])
Ys.append(g['adult'][1])
Rs.append(g['radius'])
Cs.append(g['label'])
Ws.append(1.0 - g['entropy'])
Ws = np.array(Ws)
# Ws = np.log2(np.array(Ws)+1)
Wmax = Ws.max()
if canvas_type == "bokeh":
canvas.circle(Xs,
Ys,
radius=Rs,
alpha=Ws / Wmax,
color=Cs,
line_width=0,
line_color='black')
elif canvas_type == "pyplot":
patches = []
rgbas = []
cc = colors.ColorConverter()
for i in range(len(Xs)):
patches.append(Circle(xy=(Xs[i], Ys[i]), radius=Rs[i]))
# have to manually set the alpha value
rgba = list(cc.to_rgba(Cs[i]))
rgba[3] = Ws[i] / Wmax
rgbas.append(tuple(rgba))
p = PatchCollection(patches, edgecolor='none')
p.set_facecolors(rgbas)
canvas.add_collection(p)
pass
else:
raise ValueError("Wrong plot style.")
votpts[0, 0] = 0.0
votpts[nx - 1, 1] = batmax + tol
votpts[0, 1] = batmax + tol
sshpts[0, 1] = sshpts[1, 1]
for pt in range(nx):
sshpts[pt + nx, 0] = batpts[nx + 1 - pt, 0]
sshpts[pt + nx, 1] = batpts[nx + 1 - pt, 1]
xs, ys = zip(*votpts)
fig, ax = plt.subplots()
patches = []
polygon = Polygon(batpts, True)
patches.append(polygon)
p = PatchCollection(patches, cmap=matplotlib.cm.jet, alpha=1.0)
p.set_facecolors(['#f1a9a9'])
patches = []
polygon2 = Polygon(sshpts, True)
patches.append(polygon2)
p2 = PatchCollection(patches, cmap=matplotlib.cm.jet, alpha=1.0)
p2.set_facecolors(['#44a1ff'])
# Maximum depth set here to -10m
ax.set_ylim([-10., 6.0])
ax.set_xlim([0., 51.0])
ax.add_collection(p2)
ax.add_collection(p)
ax.plot(xs, ys, '--', color='black', ms=10)
plt.annotate(hour, xy=(2, batmin + 0.1 * brange))
def make_piechart(slices, colors, ecolors, outname, showtext=True, groups=[[0,1],[2,3]], radfraction=0.2, transparent=False):
assert len(groups) == 2
plt.close('all')
fig, ax = plt.subplots(figsize=(5,5))
wedgeprops = {'edgecolor':'k', 'linewidth':6}
patches, texts, pcts = ax.pie(slices, labeldistance=1.15, colors=colors, autopct=lambda p: '{:1.1f}\%'.format(p), wedgeprops=wedgeprops)
[pct.set_fontsize(20) for pct in pcts]
ax.axis('equal')
for patch, ecolor in zip(patches, ecolors):
patch.set_edgecolor(ecolor)
fig.savefig('{}'.format(outname), transparent=True)
plt.close('all')
fig, ax = plt.subplots(figsize=(5,5))
ax.axis('equal')
ax.axis('off')
#embed()
i = groups[0]
ang = np.deg2rad((patches[i[-1]].theta2 + patches[i[0]].theta1)/2.0)
wedges = []
for j in i:
patch = patches[j]
center = (radfraction*patch.r*np.cos(ang), radfraction*patch.r*np.sin(ang))
wedges.append(mpatches.Wedge(center, patch.r, patch.theta1, patch.theta2, edgecolor=patch.get_edgecolor(), facecolor=patch.get_facecolor()))
text_ang = np.deg2rad((patch.theta1 + patch.theta2)/2.0)
pct = pcts[j].get_text()
if slices[j] == 0:
pct = ''
fontsize = 10
elif slices[j] < 0.01:
fontsize = 10
elif slices[j] < 0.1:
fontsize = 15
else:
fontsize = 20
if text_ang > np.pi and text_ang < (3*np.pi)/2.0:
align='top'
text_pos = np.array(((1.12)*patch.r*np.cos(text_ang), (1.12)*patch.r*np.sin(text_ang))) + np.array(center)
else:
align='baseline'
text_pos = np.array(((1.08)*patch.r*np.cos(text_ang), (1.08)*patch.r*np.sin(text_ang))) + np.array(center)
if showtext:
ax.text(*text_pos, s=pct, fontsize=fontsize, verticalalignment=align)
i = groups[1]
for j in i:
try:
patch = patches[j]
except:
embed()
center = patch.center
wedges.append(mpatches.Wedge(center, patch.r, patch.theta1, patch.theta2, edgecolor=patch.get_edgecolor(), facecolor=patch.get_facecolor()))
text_ang = np.deg2rad((patch.theta1 + patch.theta2)/2.0)
pct = pcts[j].get_text()
if slices[j] == 0:
pct = ''
fontsize = 10
elif slices[j] < 0.01:
fontsize = 10
elif slices[j] < 0.1:
fontsize = 15
else:
fontsize = 20
if text_ang > np.pi and text_ang < (3*np.pi)/2.0:
align='top'
text_pos = np.array(((1.12)*patch.r*np.cos(text_ang), (1.12)*patch.r*np.sin(text_ang))) + np.array(center)
else:
align='baseline'
text_pos = np.array(((1.08)*patch.r*np.cos(text_ang), (1.08)*patch.r*np.sin(text_ang))) + np.array(center)
if showtext:
ax.text(*text_pos, s=pct, fontsize=fontsize, verticalalignment=align)
collection = PatchCollection(wedges)
collection.set_facecolors(colors)
collection.set_linewidths(6)
collection.set_edgecolors(ecolors)
#collection.set_array(np.array(colors))
ax.add_collection(collection)
ax.autoscale(True)
#ax.text(*pcts[0].get_position(), s=pcts[0].get_text())
fig.savefig('{}_nolabel'.format(outname), transparent=transparent)
plt.close('all')