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false-color

v1.0.2

Published

Converts values to false colors

Downloads

1

Readme

Copyed from wikipedia

False color (or false colour) refers to a group of color rendering methods used to display images in color which were recorded in the visible or non-visible parts of the electromagnetic spectrum. A false-color image is an image that depicts an object in colors that differ from those a photograph (a true-color image) would show.

What can this package do

false-color generally converts a value to a color, and the color represents the value. This is useful when you want to color a graph when doing data visualization.

Install

npm i false-color --save

Usage

const fc = require('false-color')

console.log(fc.celsius(37).toString('hex'))
// '#ffa500'

console.log(fc.celsius(37).toString('rgba'))
// 'rgba(255,165.75,0,1)'

console.log(
  fc
    .range(0, 100)
    .convert(5)
    .toString('hex')
)
// '#0c00ff'

API

fc.range(a, b)

Returns an empty FC object with range [a, b]

fc.convert(value)

Returns an FC object with color converted from value

fc.toString(encode)

Returns a encoded string.

| encode | Example | | -------- | ------------------------ | | hex | '#0c00ff' | | rgb | '#0c00ff' | | rgba | 'rgba(255,165.75,0,1)' | | hsl | 'hsl(256.6,100%,50%)' |

fc.value(space)

Converts the color to space and return as an array. This function is powered by color-space

fc.fg(value)

Returns an FC object that contains a recommended foreground color. This is useful when you want to print some text on the converted color.

bgColor = fc.celsius(77)
textColor = bgColor.fg().toString()

fc.celsius(value)

Short cut for fc.range(-80, 100).convert(value)

fc.fahrenheit(value)

Short cut for fc.range(-112, 212).convert(value)

fc.percentage(value)

Short cut for fc.range(0, 1).convert(value)