Ten simple rules to colorize biological data visualization
Fig 3
Example of heatmap color mappings.
Left: Bad example where a diverging color palette (YlGnBu) is applied to ordered data that progresses from low to high (0 to 1). The color mapping represents higher values in lighter colors. Right: Better example where a sequential color palette (Purples) is applied to the data. The color mapping reverses the importance. Gray cells depict missing data.