Interactive heatmaps can be easily created using plotly. Let’s start with a basic heatmap on the mtcars dataset:

The default heatmap is on the left. Note that plotly does not apply any normalization. You need to normalized by rows or columns for a better heatmap, what is done on the right chart.

You can custom the color palette used for the heatmap.

You can remove the scale on the left easily

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