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Calculates the color representing a number based on the gradient supplied
calculates the color representing a number based on the gradient supplied
When using charts and maps to visualize data, it is useful to map values to a color gradient. This package provides the functions to map values to color gradients.
Instantiate object with the graident palette, then use it to calculate the color representing a value
var Gradient = require('linear-gradient');
// instantiate with an RGB palette
var grad1 = new Gradient([
[0,0,0],
[0,80,0],
[0,160,80],
[80,80,80],
[160,40,40],
[255,0,0]
]);
// now we are ready to calculate the colors
// the input value should be normalized to the range between 0 and 1
console.log(grad1.calcArray(0)); // -> [0,0,0] (0 -> first color of the palette)
console.log(grad1.calcArray(1)); // -> [255,0,0] (1 -> last color of the palette)
console.log(grad1.calcArray(0.25)); // -> [0,100,20] (weighted average between [0,80,0] and [0,160,80])
console.log(grad1.calcArray(0.5));
console.log(grad1.calcArray(0.75));
console.log(grad1.calcHex(1)); // -> '#ffffff'
console.log(grad1.calcHex(0.25)); // -> '#006416'
FAQs
Calculates the color representing a number based on the gradient supplied
The npm package linear-gradient receives a total of 94 weekly downloads. As such, linear-gradient popularity was classified as not popular.
We found that linear-gradient demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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