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multidim-array-index

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Readme

multidim-array-index

maps multidimensional array indices to monodimensional array index

Install

With npm do

npm install multidim-array-index --save

Usage

Signature is (dimension, indices) where

dimensions: array that defines the shape of the multi dimensional array.
indices: array of the indices to transform. It returns the index of an equivalent mono dimensional array.

Examples

All code in the examples below is intended to be contained into a single file.

var multiDimArrayIndex = require('multidim-array-index')

1-dim

var i3 = multiDimArrayIndex.bind(null, [3])

i3([0]) // 0
i3([1]) // 1
i3([2]) // 2

2-dim

var i2x2 = multiDimArrayIndex.bind(null, [2, 2])

i2x2([0, 0]) // 0
i2x2([0, 1]) // 1
i2x2([1, 0]) // 2
i2x2([1, 1]) // 3

3-dim

var i2x2x2 = multiDimArrayIndex.bind(null, [2, 2, 2])

i2x2x2([0, 0, 0]) // 0
i2x2x2([0, 0, 1]) // 1
i2x2x2([0, 1, 0]) // 2
i2x2x2([0, 1, 1]) // 3
i2x2x2([1, 0, 0]) // 4
i2x2x2([1, 0, 1]) // 5
i2x2x2([1, 1, 0]) // 6
i2x2x2([1, 1, 1]) // 7

License

MIT