Colour Me Life.

A JavaScript library for colour data visualization. Easily map numbers to a smooth-transitioning colour legend.

This class by default maps the range 0 to 100 (inclusive) to the colours of the rainbow (i.e. a gradient transitioning from red to yellow to lime to blue).

Usage

var ColourMeLife = require('colour-me-life');

var gradient = new ColourMeLife();
gradient
  .setSpectrum('blue', 'red')
  .setNumberRange(0, 100);
  
gradient.colourAt(13); // => hex

Create new instance. By default, the number range is from 0 to 100, and the spectrum is a rainbow.

Methods

colourAt()

colourMeLife.colourAt(number);

Returns the hex colour corresponding to the number. If number is out of range, it returns the appropriate hex colour corresponding to either the minNumber or maxNumber.

setSpectrum()

colourMeLife.setSpectrum(colour1, colour2 [,colourN]);

Sets the new spectrum. By default, the spectrum is a rainbow. You must have a minimum of two colours, but you can specify more than two colours. Colours can be in the form 'red', 'ff0000', or '#ff0000'. For example, rainbow.setSpectrum('red', 'yellow', 'white'); makes the "Rainbow" a colour gradient from red to yellow to white.

setNumberRange()

colourMeLife.setNumberRange(minNumber, maxNumber);

Sets the number range of the Rainbow object. By default, it is 0 to 100.

Inspired by RainbowVis-JS