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Catch invalid interactive switch to log scale. #6983

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Merged
merged 1 commit into from
Aug 27, 2016
Merged

Catch invalid interactive switch to log scale. #6983

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12 changes: 10 additions & 2 deletions lib/matplotlib/backend_bases.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2578,7 +2578,11 @@ def _get_uniform_gridstate(ticks):
ax.set_yscale('linear')
ax.figure.canvas.draw_idle()
elif scale == 'linear':
ax.set_yscale('log')
try:
ax.set_yscale('log')
except ValueError as exc:
warnings.warn(str(exc))
ax.set_yscale('linear')
ax.figure.canvas.draw_idle()
# toggle scaling of x-axes between 'log and 'linear' (default key 'k')
elif event.key in toggle_xscale_keys:
Expand All @@ -2587,7 +2591,11 @@ def _get_uniform_gridstate(ticks):
ax.set_xscale('linear')
ax.figure.canvas.draw_idle()
elif scalex == 'linear':
ax.set_xscale('log')
try:
ax.set_xscale('log')
except ValueError:
warnings.warn(str(exc))
ax.set_xscale('linear')
ax.figure.canvas.draw_idle()

elif (event.key.isdigit() and event.key != '0') or event.key in all_keys:
Expand Down