Color data visualization; easily map numbers to a smooth-transitioning color legend. This is a port of the RainbowVis-JS written by anomal.

Usage

To interpolate a color among the spectrum, use the list access operator, e.g.

var rb = Rainbow(spectrum: ["#ff0000", 'white', '00FF00'],
                 rangeStart: -10,
                 rangeEnd: 10);
var myColdColor = rb0[-9.32];
var myWarmColor = rb0[8.44];

Testing

To run on vm (default): pub run test As usual, tests can be run on other platforms with -p<platform>

See Also

For a Flutter-specific version of this package, see rainbow_color which interfaces with Color objects and provides additional tween support.