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Adding cla and remove to ColorbarAxes #20323

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Adding cla and remove to ColorbarAxes #20323

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13 changes: 11 additions & 2 deletions lib/matplotlib/colorbar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -285,6 +285,16 @@ def _set_inner_bounds(self, bounds):
self.inner_ax._axes_locator = _TransformedBoundsLocator(
bounds, self.outer_ax.transAxes)

def cla(self):
"""Clear the axes."""
self.inner_ax.cla()
self.outer_ax.cla()

def remove(self):
"""Remove the axes."""
self.inner_ax.remove()
self.outer_ax.remove()


class _ColorbarSpine(mspines.Spine):
def __init__(self, axes):
Expand Down Expand Up @@ -874,8 +884,7 @@ def set_alpha(self, alpha):

def remove(self):
"""Remove this colorbar from the figure."""
self.ax.inner_ax.remove()
self.ax.outer_ax.remove()
self.ax.remove()

def _ticker(self, locator, formatter):
"""
Expand Down
14 changes: 14 additions & 0 deletions lib/matplotlib/tests/test_colorbar.py
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Expand Up @@ -771,3 +771,17 @@ def test_inset_colorbar_layout():
np.testing.assert_allclose(cb.ax.get_position().bounds,
[0.87, 0.342, 0.0237, 0.315], atol=0.01)
assert cb.ax.outer_ax in ax.child_axes


@check_figures_equal(extensions=["png"])
def test_colorbar_reuse_axes(fig_ref, fig_test):
ax = fig_ref.add_subplot()
pc = ax.imshow(np.arange(100).reshape(10, 10))
cb = fig_ref.colorbar(pc)

ax = fig_test.add_subplot()
pc = ax.imshow(np.arange(100).reshape(10, 10))
cb = fig_test.colorbar(pc)
# Clear and re-use the same colorbar axes
cb.ax.cla()
cb = fig_test.colorbar(pc, cax=cb.ax)