8000 Fix traceback for vlines/hlines, when an empty list or array passed in for x/y. by dhyams · Pull Request #1000 · matplotlib/matplotlib · GitHub
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Fix traceback for vlines/hlines, when an empty list or array passed in for x/y. #1000

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Merged
merged 3 commits into from
Jul 10, 2012
Merged

Fix traceback for vlines/hlines, when an empty list or array passed in for x/y. #1000

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8f50a76
Handle the edge case in matplotlib.axes.vlines, where an empty list o…
dhyams Jul 10, 2012
554bd48
Handled edge case for hlines also; if y is an empty list or zero-leng…
dhyams Jul 10, 2012
d65269d
oops; failed to commit after fixing this little bugaboo; should have …
dhyams Jul 10, 2012
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Handled edge case for hlines also; if y is an empty list or zero-leng… 
…th array, the routine

would raise an exception.
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@dhyams
dhyams committed Jul 10, 2012
commit 554bd483cad7728655c830607bba65929dd052af
15 changes: 8 additions & 7 deletions lib/matplotlib/axes.py
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Expand Up @@ -3626,15 +3626,16 @@ def hlines(self, y, xmin, xmax, colors='k', linestyles='solid',
self.add_collection(coll)
coll.update(kwargs)

minx = min(xmin.min(), xmax.min())
maxx = max(xmin.max(), xmax.max())
miny = y.min()
maxy = y.max()
if len(x) > 0:
minx = min(xmin.min(), xmax.min())
maxx = max(xmin.max(), xmax.max())
miny = y.min()
maxy = y.max()

corners = (minx, miny), (maxx, maxy)
corners = (minx, miny), (maxx, maxy)

self.update_datalim(corners)
self.autoscale_view()
self.update_datalim(corners)
self.autoscale_view()


return coll
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