Use autolim kwarg in add_collection to prevent duplication of effort. #3100
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This changeset cleans up several problems associated with updating Axes.dataLim. The basic point is that when a method that creates a collection also updates Axes.dataLim, Axes.add_collection() should be called with autolim=False. With autolim=True, add_collection will use a very general method to update the dataLim, but in many cases the method creating the collection can perform the update much more efficiently. Closes matplotlib#3095, which reported a regression that appears to have been introduced by 88b722f.
| @@ -4301,9 +4301,10 @@ def get_interp_point(ind): | |||
| XY2 = np.array([x[where], y2[where]]).T | |||
| self.dataLim.update_from_data_xy(XY1, self.ignore_existing_data_limits, | |||
| updatex=True, updatey=True) | |||
| self.ignore_existing_data_limits = False | |||
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This flag is initialized to True by cla(); subsequently, anything that updates the dataLim needs to set it to False so that the updating is cumulative rather than starting again from scratch.
tacaswell
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Jun 2, 2014
Use autolim kwarg in add_collection to prevent duplication of effort.
| @@ -5032,7 +5033,7 @@ def pcolormesh(self, *args, **kwargs): | |||
| corners = (minx, miny), (maxx, maxy) | |||
| self.update_datalim(corners) | |||
| self.autoscale_view() | |||
| self.add_collection(collection) | |||
| self.add_collection(collection, autolim=False) | |||
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I think the better solution (but not the quicker solution, so I'm happy this PR was merged) would be to implement an appropriate data limit updater on the QuadMeshCollection - I'm not sure I'll get around to doing this anytime soon, so just wanted to post it here as a reminder.
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This changeset cleans up several problems associated with updating
Axes.dataLim. The basic point is that when a method that creates
a collection also updates Axes.dataLim, Axes.add_collection() should be
called with autolim=False. With autolim=True, add_collection will
use a very general method to update the dataLim, but in many cases
the method creating the collection can perform the update much more
efficiently.
Closes #3095, which reported a regression that appears to have been
introduced by 88b722f.