Adding specific grid cells in a seaborn heatmap

Asked Aug 28 '22 at 02:23

Active Aug 28 '22 at 02:23

Viewed 33 times

import seaborn as sns
flights = sns.load_dataset("flights")
flights = flights.pivot("month", "year", "passengers")
ax = sns.heatmap(flights, annot=True, fmt="d")

Apart from the annotation added in the code above, I want to annotate specific grid cells in this heatmap. e.g. add a string hello in the second row third column. Is there a way to do this?

asked Aug 28 '22 at 02:23

user308827

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See https://stackoverflow.com/q/73419138/7758804 – Trenton McKinney Aug 28 '22 at 02:28
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Create a custom dataframe `annot` (from pivoted `flights`) with all of the desired string annotations, and pass it to the `annot=` parameter. – Trenton McKinney Aug 28 '22 at 02:29

Adding specific grid cells in a seaborn heatmap

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