Invert matrix y axis before forcing a draw
Invert matrix y axis before forcing a draw

Closes #1333

anntzer/seaborn,arokem/seaborn,phobson/seaborn,phobson/seaborn,anntzer/seaborn,petebachant/seaborn,lukauskas/seaborn,mwaskom/seaborn,sauliusl/seaborn,arokem/seaborn,lukauskas/seaborn,mwaskom/seaborn