let colormap = require('colormap')
let colors = colormap({
colormap: 'jet',
nshades: 10,
format: 'hex',
alpha: 1
})| Property | Default | Meaning |
|---|---|---|
colormap |
'jet' |
Color map name from the image above or a custom color scale — a sequence of {index, rgb} objects, where index is 0..1 number and rgb is a length 3/4 array with values for the color stop. |
nshades |
72 |
Number of colors in returned array, the minimum number depends on colormap. |
format |
'hex' |
'hex' for #aabbcc, 'rgbaString' for rgba(255, 255, 255, 1), 'rgba' for [255, 255, 255, 1], 'float' for [1, 1, 1, 1]. |
alpha |
1 |
Alpha range, can be an array with alpha values or just 2 values for start/end colors. |
Color maps are inspired by matplotlib color scales, cmocean oceanographic colormaps, cosine gradients and others. Thanks to authors of these libs for their invaluable work.