How to add a label to Seaborn Heatmap color bar?

Question

If I have the following data and Seaborn Heatmap:

import pandas as pd
data = pd.DataFrame({\'x\':(1,2,3,4),\'y\':(1,2,3,4),\'z\':(14,15,23,2)})

sns.heatmap(         


        

Answer 1

You can use:

ax = sns.heatmap(data.pivot_table(index='y', columns='x', values='z'))
ax.collections[0].colorbar.set_label("Hello")