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Version 2.2.2.post1766+g38476fd23
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Table Of Contents

New in matplotlib 1.2.2

Improved collections

The individual items of a collection may now have different alpha values and be rendered correctly. This also fixes a bug where collections were always filled in the PDF backend.

Multiple images on same axes are correctly transparent

When putting multiple images onto the same axes, the background color of the axes will now show through correctly.