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Polar log scale: fix inner patch boundary and spine location#30223

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8 changes: 7 additions & 1 deletionlib/matplotlib/projections/polar.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -817,6 +817,10 @@ def _init_axis(self):
self.xaxis=ThetaAxis(self,clear=False)
self.yaxis=RadialAxis(self,clear=False)
self.spines['polar'].register_axis(self.yaxis)
inner_spine=self.spines.get('inner',None)
ifinner_spineisnotNone:
# Subclasses may not have inner spine.
inner_spine.register_axis(self.yaxis)

def_set_lim_and_transforms(self):
# A view limit where the minimum radius can be locked if the user
Expand DownExpand Up@@ -961,7 +965,9 @@ def draw(self, renderer):
thetamin,thetamax=np.rad2deg(self._realViewLim.intervalx)
ifthetamin>thetamax:
thetamin,thetamax=thetamax,thetamin
rmin,rmax= ((self._realViewLim.intervaly-self.get_rorigin())*
rscale_tr=self.yaxis.get_transform()
rmin,rmax= ((rscale_tr.transform(self._realViewLim.intervaly)-
rscale_tr.transform(self.get_rorigin()))*
self.get_rsign())
ifisinstance(self.patch,mpatches.Wedge):
# Backwards-compatibility: Any subclassed Axes might override the
Expand Down
5 changes: 4 additions & 1 deletionlib/matplotlib/spines.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -265,11 +265,14 @@ def _adjust_location(self):
self._path=mpath.Path.arc(np.rad2deg(low),np.rad2deg(high))

ifself.spine_type=='bottom':
rmin,rmax=self.axes.viewLim.intervaly
tr=self.axis.get_transform()
rmin,rmax=tr.transform(self.axes.viewLim.intervaly)
try:
rorigin=self.axes.get_rorigin()
exceptAttributeError:
rorigin=rmin
else:
rorigin=tr.transform(rorigin)
scaled_diameter= (rmin-rorigin)/ (rmax-rorigin)
self._height=scaled_diameter
self._width=scaled_diameter
Expand Down
20 changes: 20 additions & 0 deletionslib/matplotlib/tests/test_polar.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -482,6 +482,26 @@ def test_polar_log():
ax.plot(np.linspace(0,2*np.pi,n),np.logspace(0,2,n))


@check_figures_equal()
deftest_polar_log_rorigin(fig_ref,fig_test):
# Test that equivalent linear and log radial settings give the same axes patch
# and spines.
ax_ref=fig_ref.add_subplot(projection='polar',facecolor='red')
ax_ref.set_rlim(0,2)
ax_ref.set_rorigin(-3)
ax_ref.set_rticks(np.linspace(0,2,5))

ax_test=fig_test.add_subplot(projection='polar',facecolor='red')
ax_test.set_rscale('log')
ax_test.set_rlim(1,100)
ax_test.set_rorigin(10**-3)
ax_test.set_rticks(np.logspace(0,2,5))

foraxinax_ref,ax_test:
# Radial tick labels should be the only difference, so turn them off.
ax.tick_params(labelleft=False)


deftest_polar_neg_theta_lims():
fig=plt.figure()
ax=fig.add_subplot(projection='polar')
Expand Down
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