70 lines
2.0 KiB
JavaScript
70 lines
2.0 KiB
JavaScript
"use strict";
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.createMad = void 0;
|
|
var _array = require("../../utils/array.js");
|
|
var _factory = require("../../utils/factory.js");
|
|
var _improveErrorMessage = require("./utils/improveErrorMessage.js");
|
|
const name = 'mad';
|
|
const dependencies = ['typed', 'abs', 'map', 'median', 'subtract'];
|
|
const createMad = exports.createMad = /* #__PURE__ */(0, _factory.factory)(name, dependencies, _ref => {
|
|
let {
|
|
typed,
|
|
abs,
|
|
map,
|
|
median,
|
|
subtract
|
|
} = _ref;
|
|
/**
|
|
* Compute the median absolute deviation of a matrix or a list with values.
|
|
* The median absolute deviation is defined as the median of the absolute
|
|
* deviations from the median.
|
|
*
|
|
* Syntax:
|
|
*
|
|
* math.mad(a, b, c, ...)
|
|
* math.mad(A)
|
|
*
|
|
* Examples:
|
|
*
|
|
* math.mad(10, 20, 30) // returns 10
|
|
* math.mad([1, 2, 3]) // returns 1
|
|
* math.mad([[1, 2, 3], [4, 5, 6]]) // returns 1.5
|
|
*
|
|
* See also:
|
|
*
|
|
* median, mean, std, abs
|
|
*
|
|
* @param {Array | Matrix} array
|
|
* A single matrix or multiple scalar values.
|
|
* @return {*} The median absolute deviation.
|
|
*/
|
|
return typed(name, {
|
|
// mad([a, b, c, d, ...])
|
|
'Array | Matrix': _mad,
|
|
// mad(a, b, c, d, ...)
|
|
'...': function (args) {
|
|
return _mad(args);
|
|
}
|
|
});
|
|
function _mad(array) {
|
|
array = (0, _array.flatten)(array.valueOf());
|
|
if (array.length === 0) {
|
|
throw new Error('Cannot calculate median absolute deviation (mad) of an empty array');
|
|
}
|
|
try {
|
|
const med = median(array);
|
|
return median(map(array, function (value) {
|
|
return abs(subtract(value, med));
|
|
}));
|
|
} catch (err) {
|
|
if (err instanceof TypeError && err.message.includes('median')) {
|
|
throw new TypeError(err.message.replace('median', 'mad'));
|
|
} else {
|
|
throw (0, _improveErrorMessage.improveErrorMessage)(err, 'mad');
|
|
}
|
|
}
|
|
}
|
|
}); |