78 lines
2.6 KiB
JavaScript
78 lines
2.6 KiB
JavaScript
var vows = require('vows');
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var assert = require('assert');
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var suite = vows.describe('jStat.quantiles');
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require('../env.js');
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var tol = 0.0000001;
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suite.addBatch({
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'quantiles': {
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'topic': function() {
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return jStat;
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},
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'return basic quantiles': function(jStat) {
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assert.deepEqual(jStat.quantiles([1, 2, 3, 4, 5, 6],
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[0.25, 0.5, 0.75]),
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[1.9375, 3.5, 5.0625]);
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},
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'quantiles from instance': function(jStat) {
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assert.deepEqual(jStat([1, 2, 3, 4, 5, 6]).quantiles([0.25, 0.5, 0.75]),
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[1.9375, 3.5, 5.0625]);
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},
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'quantiles matrix cols': function(jStat) {
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assert.deepEqual(
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jStat([[1, 2], [3, 4], [5, 6]]).quantiles([0.25, 0.5, 0.75]),
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[[1.375, 3, 4.625], [2.375, 4, 5.625]]);
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},
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'quantiles normal dist': function(jStat) {
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var arr = [-2.57313203, 9.84802638, 6.13625057, 8.41780777,
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1.06749265, 2.1530631, 4.46082094, 8.26291053,
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-9.28064583, 0.13434825];
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var quantiles = [0.1, 0.3, 0.5, 0.8];
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var results = jStat(arr).quantiles(quantiles);
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var expected = [-6.59764031, 0.55426323, 3.30694202, 8.35197644];
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var i;
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for (i = 0; i < quantiles.length; i++) {
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assert.epsilon(tol, results[i], expected[i]);
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}
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},
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'quantiles gamma dist': function(jStat) {
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var arr = [6.20504472, 7.18983495, 6.29331634, 7.72493799,
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6.44628893, 7.73877221, 8.26542627, 7.00870595,
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6.72238426, 7.09363385, 6.60325838, 5.90180641,
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5.79957376, 13.07687722, 6.65942804, 6.75392592,
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6.41813748, 7.97086739, 9.36773336];
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var quantiles = [0.83, 0.1, 0.3, 0.5, 0.8];
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var results = jStat(arr).quantiles(quantiles, 0.4, 0.4);
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var expected = [8.06983917, 5.99884267,
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6.47140404, 6.75392592, 7.91516455];
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for (var i=0; i < quantiles.length; i++)
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assert.epsilon(tol, results[i], expected[i]);
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}
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},
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'#quantiles vector': {
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'topic': function() {
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jStat([1, 2, 3, 4, 5, 6]).quantiles([0.25, 0.5, 0.75], this.callback);
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},
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'quantiles callback': function(val, stat) {
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assert.deepEqual(val, [1.9375, 3.5, 5.0625]);
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}
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},
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'#quantiles matrix cols': {
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'topic': function() {
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jStat([[1, 2], [3, 4], [5, 6]]).quantiles([0.25, 0.5, 0.75],
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this.callback);
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},
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'quantiles matrix cols callback': function(val, stat) {
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assert.deepEqual(val, [[1.375, 3, 4.625], [2.375, 4, 5.625]]);
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}
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}
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});
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suite.export(module);
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