Color Maps

The <color-map> setting allows you to map input data to colors. These are the currently implemented mapping methods:

• steps -- Map values in [0..1] to a set of discrete colors
• gradient -- Map values in [0..1] to a linear color gradient

Syntax:

;; a 'step' color map
steps(<step> <color>...)

;; a 'gradient' color map
gradient(<step> <color>...)

Example

Below you can see simple scatter plot that uses a red to blue color map to display a third data dimension. The full source for this example is at: examples/charts-scientific/scatterplot_colors

The color map specification used in the example is:

;; gradient from gray to black
color-map: gradient(0 #aaa 1.0 #000);