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https://github.com/josdejong/mathjs.git
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1ee8733832
* added correlation function to statistics * added implemenation for signature Matrix, Matrix and support for BigNumbers * reverted changes to default for version numbers of devDepenencies * reverted changes to default for version numbers of devDepenencies in package-lock.json * change variable name from xArray, yArray to x and y * added Matrix as param in index.d.ts * corrected the file and function names for correlation function * renamed createCorrelation to createCorr in factoriesNumber.js * fixed failing test case for matrix and added params and return in corr
22 lines
1.1 KiB
JavaScript
22 lines
1.1 KiB
JavaScript
import assert from 'assert'
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import math from '../../../../src/defaultInstance.js'
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const corr = math.corr
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const BigNumber = math.BigNumber
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describe('correlation', function () {
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it('should return the correlation coefficient from an array', function () {
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assert.strictEqual(corr([new BigNumber(1), new BigNumber(2.2), new BigNumber(3), new BigNumber(4.8), new BigNumber(5)], [new BigNumber(4), new BigNumber(5.3), new BigNumber(6.6), new BigNumber(7), new BigNumber(8)]).toNumber(), 0.9569941688503653)
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assert.strictEqual(corr([1, 2, 3, 4, 5], [4, 5, 6, 7, 8]), 1)
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assert.strictEqual(corr([1, 2.2, 3, 4.8, 5], [4, 5.3, 6.6, 7, 8]), 0.9569941688503644)
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assert.deepStrictEqual(corr(math.matrix([[1, 2.2, 3, 4.8, 5], [1, 2, 3, 4, 5]]), math.matrix([[4, 5.3, 6.6, 7, 8], [1, 2, 3, 4, 5]]))._data, [0.9569941688503644, 1])
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})
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it('should throw an error if called with invalid number of arguments', function () {
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assert.throws(function () { corr() })
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})
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it('should throw an error if called with an empty array', function () {
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assert.throws(function () { corr([]) })
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})
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})
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