Heatmap

Learn how to draw a heatmap chart and its alternatives in Altair.

A heatmap represents the density of data as colors. We use heatmaps to visualize patterns in data and find outliers or areas of interest.

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An example of a heatmap
An example of a heatmap

When are heatmaps useful?

Heatmaps are useful when:

  • We want to find patterns or trends in data.

  • We have a large amount of data. ...