matplotlib/seaborn: first and last row cut in half of heatmap plot

Question

When plotting heatmaps with seaborn (and correlation matrices with matplotlib) the first and the last row is cut in halve. This happens also when I run this minimal code exa

Answer 1

Its a bug in the matplotlib regression between 3.1.0 and 3.1.1 You can correct this by:

import seaborn as sns
df_corr = someDataFrame.corr()
ax = sns.heatmap(df_corr, annot=True) #notation: "annot" not "annote"
bottom, top = ax.get_ylim()
ax.set_ylim(bottom + 0.5, top - 0.5)