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Correctly pass location when constructing ImageGrid colorbar. by anntzer · Pull Request #25884 · matplotlib/matplotlib · GitHub

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Correctly pass location when constructing ImageGrid colorbar. #25884

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timhoffm merged 1 commit into from
May 14, 2023
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Correctly pass location when constructing ImageGrid colorbar. #25884

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15 changes: 3 additions & 12 deletions lib/mpl_toolkits/axes_grid1/axes_grid.py
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Expand Up @@ -22,23 +22,14 @@ def __init__(self, *args, orientation, **kwargs):
self.orientation = orientation
super().__init__(*args, **kwargs)

timhoffm May 14, 2023

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Semi-OT, but got to this because you deleted cla(): This super().__init__ should not do anything, right? - Likely a leftover from the dedicated axes_grid colorbar classes?

anntzer May 14, 2023 •
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

It does (should?), as CbarAxesBase is a mixin and will thus end up in the base classes of the actual colorbar axes class used by ImageGrid, and thus we need to forward arguments via super() (after extracting out orientation).

timhoffm May 14, 2023

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Indeed. Maybe that should be mentioned somewhere in the class? without that context, it's looks like object is the only parent. Either way, the PR is correct.

def colorbar(self, mappable, *, ticks=None, **kwargs):
orientation = (
"horizontal" if self.orientation in ["top", "bottom"] else
"vertical")
cb = self.figure.colorbar(mappable, cax=self, orientation=orientation,
ticks=ticks, **kwargs)
return cb
def colorbar(self, mappable, **kwargs):
return self.figure.colorbar(
mappable, cax=self, location=self.orientation, **kwargs)

def toggle_label(self, b):
axis = self.axis[self.orientation]
axis.toggle(ticklabels=b, label=b)

def cla(self):
orientation = self.orientation
super().cla()
self.orientation = orientation


_cbaraxes_class_factory = cbook._make_class_factory(CbarAxesBase, "Cbar{}")

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Binary file modified ...1/tests/baseline_images/test_axes_grid1/image_grid_each_left_label_mode_all.png
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Binary file modified ...olkits/axes_grid1/tests/baseline_images/test_axes_grid1/imagegrid_cbar_mode.png
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16 changes: 6 additions & 10 deletions lib/mpl_toolkits/axes_grid1/tests/test_axes_grid1.py
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Original file line number Diff line number Diff line change
Expand Up @@ -701,11 +701,7 @@ def test_insetposition():
@image_comparison(['imagegrid_cbar_mode.png'],
remove_text=True, style='mpl20', tol=0.3)
def test_imagegrid_cbar_mode_edge():
# Remove this line when this test image is regenerated.
plt.rcParams['pcolormesh.snap'] = False

X, Y = np.meshgrid(np.linspace(0, 6, 30), np.linspace(0, 6, 30))
arr = np.sin(X) * np.cos(Y) + 1j*(np.sin(3*Y) * np.cos(Y/2.))
arr = np.arange(16).reshape((4, 4))

fig = plt.figure(figsize=(18, 9))

Expand All @@ -721,12 +717,12 @@ def test_imagegrid_cbar_mode_edge():
cbar_location=location,
cbar_size='20%',
cbar_mode='edge')
ax1, ax2, ax3, ax4, = grid
ax1, ax2, ax3, ax4 = grid

ax1.imshow(arr.real, cmap='nipy_spectral')
ax2.imshow(arr.imag, cmap='hot')
ax3.imshow(np.abs(arr), cmap='jet')
ax4.imshow(np.arctan2(arr.imag, arr.real), cmap='hsv')
ax1.imshow(arr, cmap='nipy_spectral')
ax2.imshow(arr.T, cmap='hot')
ax3.imshow(np.hypot(arr, arr.T), cmap='jet')
ax4.imshow(np.arctan2(arr, arr.T), cmap='hsv')

# In each row/column, the "first" colorbars must be overwritten by the
# "second" ones. To achieve this, clear out the axes first.
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