[MRG + 1] Improve the output of example plot_iris.py after matplotlib2.0 #9541
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Reference Issue
part of #8364
note that the plot in 0.18(before matplotlib2.0) is also not good so I also modify some other things
What does this implement/fix? Explain your changes.
Below are the results from Circle CI



new version:
old version in 0.19/dev:
old version in 0.18: