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Commit7ed9875

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Faruk Fakihrcomer
Faruk Fakih
authored andcommitted
Created handler for PatchCollection
1 parentf533687 commit7ed9875

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5 files changed

+88
-2
lines changed

5 files changed

+88
-2
lines changed
Lines changed: 24 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,24 @@
1+
Legend handler for PatchCollection objects
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------------------------------------------
3+
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PatchCollection objects are now supported in legends. The feature can be used as follows:
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..plot::
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:include-source: true
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9+
import matplotlib.pyplot as plt
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from matplotlib.collections import PatchCollection
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from matplotlib.patches import Polygon
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13+
fig, axs = plt.subplots()
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p1, p2 = Polygon([[0, 0], [100, 100], [200, 0]]), Polygon([[400, 0], [500, 100], [600, 0]])
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p3, p4 = Polygon([[700, 0], [800, 100], [900, 0]]), Polygon([[1000, 0], [1100, 100], [1200, 0]])
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p = PatchCollection([p1, p2], label="a", facecolors='red', edgecolors='black')
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p2 = PatchCollection([p3, p4], label="ab", color='green')
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axs.add_collection(p, autolim=True)
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axs.add_collection(p2, autolim=True)
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axs.set_xlim(right=1200)
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axs.set_ylim(top=100)
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axs.legend()
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plt.show()

‎lib/matplotlib/legend.py

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -38,7 +38,7 @@
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StepPatch)
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frommatplotlib.collectionsimport (
4040
Collection,CircleCollection,LineCollection,PathCollection,
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PolyCollection,RegularPolyCollection)
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PolyCollection,PatchCollection,RegularPolyCollection)
4242
frommatplotlib.textimportText
4343
frommatplotlib.transformsimportBbox,BboxBase,TransformedBbox
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frommatplotlib.transformsimportBboxTransformTo,BboxTransformFrom
@@ -792,6 +792,7 @@ def draw(self, renderer):
792792
Patch:legend_handler.HandlerPatch(),
793793
StepPatch:legend_handler.HandlerStepPatch(),
794794
LineCollection:legend_handler.HandlerLineCollection(),
795+
PatchCollection:legend_handler.HandlerPatchCollection(),
795796
RegularPolyCollection:legend_handler.HandlerRegularPolyCollection(),
796797
CircleCollection:legend_handler.HandlerCircleCollection(),
797798
BarContainer:legend_handler.HandlerPatch(

‎lib/matplotlib/legend_handler.py

Lines changed: 26 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -427,6 +427,32 @@ def create_artists(self, legend, orig_handle,
427427
return [legline]
428428

429429

430+
classHandlerPatchCollection(HandlerPatch):
431+
"""
432+
Handler for `.PatchCollection` instances.
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"""
434+
def_default_update_prop(self,legend_handle,orig_handle):
435+
lw=orig_handle.get_linewidths()[0]
436+
dashes=orig_handle._us_linestyles[0]
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facecolor=orig_handle.get_facecolor()[0]
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edgecolor=orig_handle.get_edgecolor()[0]
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legend_handle.set_facecolor(facecolor)
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legend_handle.set_edgecolor(edgecolor)
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legend_handle.set_linestyle(dashes)
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legend_handle.set_linewidth(lw)
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defcreate_artists(self,legend,orig_handle,
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xdescent,ydescent,width,height,fontsize,trans):
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p=self._create_patch(legend,orig_handle,
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xdescent,ydescent,width,height,fontsize)
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self.update_prop(p,orig_handle,legend)
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p.set_transform(trans)
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return [p]
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430456
classHandlerRegularPolyCollection(HandlerNpointsYoffsets):
431457
r"""Handler for `.RegularPolyCollection`\s."""
432458

‎lib/matplotlib/legend_handler.pyi

Lines changed: 14 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -130,7 +130,7 @@ class HandlerStepPatch(HandlerBase):
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trans:Transform,
131131
)->Sequence[Artist]: ...
132132

133-
classHandlerLineCollection(HandlerLine2D):
133+
classHandlerLineCollection(HandlerPatch):
134134
defget_numpoints(self,legend:Legend)->int: ...
135135
defcreate_artists(
136136
self,
@@ -144,6 +144,19 @@ class HandlerLineCollection(HandlerLine2D):
144144
trans:Transform,
145145
)->Sequence[Artist]: ...
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classHandlerPatchCollection(HandlerLine2D):
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defcreate_artists(
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self,
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legend:Legend,
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orig_handle:Artist,
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xdescent:float,
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ydescent:float,
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width:float,
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height:float,
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fontsize:float,
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trans:Transform,
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)->Sequence[Artist]: ...
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147160
_T=TypeVar("_T",bound=Artist)
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149162
classHandlerRegularPolyCollection(HandlerNpointsYoffsets):

‎lib/matplotlib/tests/test_legend.py

Lines changed: 22 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -625,6 +625,28 @@ def test_linecollection_scaled_dashes():
625625
assertoh.get_linestyles()[0]==lh._dash_pattern
626626

627627

628+
deftest_patch_collection_handler():
629+
fig,ax=plt.subplots()
630+
pc=mcollections.PatchCollection([
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plt.Circle((0,0),radius=1,facecolor='red',edgecolor='green',
632+
linewidth=3,linestyle='--'),
633+
plt.Rectangle((0.5,0.5),1,1),
634+
],match_original=True,label='my_collection')
635+
636+
ax.add_collection(pc)
637+
_,labels=ax.get_legend_handles_labels()
638+
assertlen(labels)==1
639+
assertlabels[0]=='my_collection'
640+
641+
leg=ax.legend()
642+
handles=leg.legend_handles
643+
assertmpl.colors.same_color(handles[0].get_facecolor(),'red')
644+
assertmpl.colors.same_color(handles[0].get_edgecolor(),'green')
645+
asserthandles[0].get_linewidth()==3
646+
np.testing.assert_allclose(handles[0].get_linestyle()[1],
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pc.get_linestyle()[0][1])
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649+
628650
deftest_handler_numpoints():
629651
"""Test legend handler with numpoints <= 1."""
630652
# related to #6921 and PR #8478

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