title: Python package to plot two heatmaps in one (split each square into two triangles)
body: <p>I've been searching around but couldn't find an easy solution to plot two heatmaps in one graphic by having each square in the heatmap split into two triangles (similar to the attached graphic I saw in a paper). Does anybody know a Python package that is able to do this? I tried seaborn but I don't think it has an easy way to achieve this.</p>
  <p><a href="https://i.stack.imgur.com/B27wC.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/B27wC.jpg" alt="enter image description here" /></a></p>
  <p>Thank you for your time!</p>
  <p>-Peter</p>