allclose

Compare numbers, arrays, or nested arrays for equality up to some tolerance. Checks both shapes and values. Uses almost-equal and generalizes array-almost-equal. Useful when working with lists of coordinates and other numerical data.

install

use npm

npm install allclose

usage

allclose(a, b, [atol], [rtol])

requires two numbers or arrays or nested arrays a and b, and optionally an absolute tolerance atol and a relative tolerance rtol. returns true if a and b have the same shape and value, and false otherwise.

examples

you can test numbers

allclose(1, 1)
> true

allclose(1, 2)
> false

or arrays

allclose([1, 2], [1, 2])
> true

allclose([1, 2], [1, 2, 3])
> false

allclose([1, 2], [1, 3])
> false

or nested arrays

allclose([[1, 2], [3, 4]], [[1, 2], [3, 4]])
> true

allclose([[1, 2], [3, 4]], [[1, 2], [3, 4], [5, 6]])
> false

allclose([[1, 2], [3, 4]], [[1, 2], [3, 5]])
> false

and you can optionally specify a tolerance

allclose([1, 2], [1, 2.1])
> false

allclose([1, 2], [1, 2.1], 0.2)
> true