w-statistic
Version:
A tool for statistical analysis.
179 lines (134 loc) • 6.33 kB
HTML
<html lang="en">
<head>
<meta charset="utf-8">
<title>arrCount.mjs - Documentation</title>
<script src="scripts/prettify/prettify.js"></script>
<script src="scripts/prettify/lang-css.js"></script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc.css">
<script src="scripts/nav.js" defer></script>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<input type="checkbox" id="nav-trigger" class="nav-trigger" />
<label for="nav-trigger" class="navicon-button x">
<div class="navicon"></div>
</label>
<label for="nav-trigger" class="overlay"></label>
<nav >
<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="w-statistic.html">w-statistic</a><ul class='methods'><li data-type='method'><a href="w-statistic.html#.arrAverage">arrAverage</a></li><li data-type='method'><a href="w-statistic.html#.arrAverageWithLogNormCI">arrAverageWithLogNormCI</a></li><li data-type='method'><a href="w-statistic.html#.arrAverageWithNormCI">arrAverageWithNormCI</a></li><li data-type='method'><a href="w-statistic.html#.arrCount">arrCount</a></li><li data-type='method'><a href="w-statistic.html#.arrGammaFit">arrGammaFit</a></li><li data-type='method'><a href="w-statistic.html#.arrGammaHist">arrGammaHist</a></li><li data-type='method'><a href="w-statistic.html#.arrGammaInv">arrGammaInv</a></li><li data-type='method'><a href="w-statistic.html#.arrGeometricAverage">arrGeometricAverage</a></li><li data-type='method'><a href="w-statistic.html#.arrGeometricStd">arrGeometricStd</a></li><li data-type='method'><a href="w-statistic.html#.arrLogNormHist">arrLogNormHist</a></li><li data-type='method'><a href="w-statistic.html#.arrLogNormInv">arrLogNormInv</a></li><li data-type='method'><a href="w-statistic.html#.arrMovingAverage">arrMovingAverage</a></li><li data-type='method'><a href="w-statistic.html#.arrNormHist">arrNormHist</a></li><li data-type='method'><a href="w-statistic.html#.arrNormInv">arrNormInv</a></li><li data-type='method'><a href="w-statistic.html#.arrQuartile">arrQuartile</a></li><li data-type='method'><a href="w-statistic.html#.arrStd">arrStd</a></li><li data-type='method'><a href="w-statistic.html#.bin">bin</a></li><li data-type='method'><a href="w-statistic.html#.histGen">histGen</a></li><li data-type='method'><a href="w-statistic.html#.regLine">regLine</a></li><li data-type='method'><a href="w-statistic.html#.regMpLine">regMpLine</a></li><li data-type='method'><a href="w-statistic.html#.regPoly">regPoly</a></li><li data-type='method'><a href="w-statistic.html#.regPower">regPower</a></li><li data-type='method'><a href="w-statistic.html#.sampleRandom">sampleRandom</a></li><li data-type='method'><a href="w-statistic.html#.studentTInv">studentTInv</a></li></ul></li></ul>
</nav>
<div id="main">
<h1 class="page-title">arrCount.mjs</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>import each from 'lodash-es/each.js'
import map from 'lodash-es/map.js'
import size from 'lodash-es/size.js'
import groupBy from 'lodash-es/groupBy.js'
import sortBy from 'lodash-es/sortBy.js'
import reverse from 'lodash-es/reverse.js'
import isarr from 'wsemi/src/isarr.mjs'
import isnum from 'wsemi/src/isnum.mjs'
import isestr from 'wsemi/src/isestr.mjs'
import cstr from 'wsemi/src/cstr.mjs'
/**
* 計算陣列內有效字串依照不重複值進行群組化後，回傳各值之出現次數值
*
* Unit Test: {@link https://github.com/yuda-lyu/w-statistic/blob/master/test/arrCount.test.js Github}
* @memberOf w-statistic
* @param {Array} arr 輸入陣列，只提取有效字串(或為字串的數字)進行計算
* @returns {Array} 回傳各值出現次數值陣列
* @example
*
* let arr
*
* arr = ['abc', '-2.5', -2.5, '-1', -1, '-0.1', -0.1, '0', 0, 'abc', '0.1', 0.1, '1', 1, '2.5', 2.5, 22.5, 'xyz']
* console.log(arrCount(arr))
* // => [
* // { key: '2.5', count: 2 },
* // { key: '0.1', count: 2 },
* // { key: '-0.1', count: 2 },
* // { key: '-1', count: 2 },
* // { key: '-2.5', count: 2 },
* // { key: 'abc', count: 2 },
* // { key: '1', count: 2 },
* // { key: '0', count: 2 },
* // { key: 'xyz', count: 1 },
* // { key: '22.5', count: 1 }
* // ]
*
* arr = ['abc', '0', 0, 'abc', '0.1', 0.1, '1', 1, '2.5', 2.5, 22.5, 'xyz']
* console.log(arrCount(arr))
* // => [
* // { key: '2.5', count: 2 },
* // { key: '0.1', count: 2 },
* // { key: 'abc', count: 2 },
* // { key: '1', count: 2 },
* // { key: '0', count: 2 },
* // { key: 'xyz', count: 1 },
* // { key: '22.5', count: 1 }
* //]
*
*/
function arrCount(arr) {
//check
if (!isarr(arr)) {
return []
}
if (size(arr) === 0) {
return []
}
//rs
let rs = []
each(arr, (v) => {
if (isnum(v) || isestr(v)) {
rs.push(cstr(v)) //都轉字串
}
})
//check
if (size(rs) === 0) {
return []
}
//轉物件
rs = map(rs, (v) => {
return { v }
})
//groupBy
let gs = groupBy(rs, 'v')
// console.log('groupBy gs', gs)
//to array
gs = map(gs, (v, k) => {
let count = size(v)
return {
key: k,
count,
}
})
// console.log('toArray gs', gs)
//sortBy
gs = sortBy(gs, 'count')
// console.log('sortBy gs', gs)
//reverse
gs = reverse(gs)
// console.log('reverse gs', gs)
return gs
}
export default arrCount
</code></pre>
</article>
</section>
</div>
<br class="clear">
<footer>
Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 4.0.2</a> on Tue Jul 29 2025 14:21:18 GMT+0800 (台北標準時間) using the <a href="https://github.com/clenemt/docdash">docdash</a> theme.
</footer>
<script>prettyPrint();</script>
<script src="scripts/polyfill.js"></script>
<script src="scripts/linenumber.js"></script>
</body>
</html>