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  • License MIT

Rescale util

Package Exports

  • rescale-util

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (rescale-util) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

rescale-util

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Rescale utilities

Install

npm i rescale-util

Usage

var rescaleUtil = require('rescale-util');

rescaleUtil.isValidScale([-3, 5]); // => true
rescaleUtil.isValidScale([0, 0]); // => false
rescaleUtil.getLastError(); // => the extremes cannot be the same. Eg. [0, 1]

rescaleUtil.resetLastError();
rescaleUtil.getLastError(); // => '' (empty string)

rescaleUtil.isValidPreset([[-3, 5], [1, 0]]); // => true
rescaleUtil.isValidPreset(10); // => false
rescaleUtil.getLastError(); // => a preset must be an Array with two scales. Eg. [[0, 100], [32, 212]]

rescaleUtil.areValidPresets([[[Math.PI, 0], [Math.E, 5]], [[0, 100], [32, 212]]]); // => true
rescaleUtil.areValidPresets(10); // => false
rescaleUtil.getLastError(); // => presets must be an Array with presets. Eg. [[[0, 100], [32, 212]], [[0, 100], [-273.15, -173.15]]]

Rescale-util also provides a specific error:

var rescaleUtil = require('rescale-util');
var RescaleError = rescaleUtil.RescaleError;

if (!rescaleUtil.isValidScale(someScale)) {
  throw new RescaleError(rescaleUtil.getLastError());
}

See spec.

  • linear-converter: flexible linear converter with built in conversions for common units.
  • rescale: rescales a point given two scales.
  • scale: scales normalised data.
  • normalise: normalise data to [0, 1].