I'm having some problems with matplotlib's OS X native backend, namely that plot windows always pop up on the background.
I wanted therefore to try matplotlib's Qt backend, but when I try it I get the following error message:
2): Library not loaded: @rpath/libpng16.16.dylib Referenced from:
Incompatible library version: libQtGui.4.dylib requires version 39.0.0
or later, but libpng16.16.dylib provides version 38.0.0
If anyone ever comes across this problem, my solution was to:
brew uninstall libpng brew cleanup && brew prune brew install libpng
conda clean --all conda update --all
Now matplotlib works fine with Qt backend.