mathjs/lib/esm/expression/transform/variance.transform.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

import { factory } from '../../utils/factory.js';
import { isBigNumber, isCollection, isNumber } from '../../utils/is.js';
import { errorTransform } from './utils/errorTransform.js';
import { createVariance } from '../../function/statistics/variance.js';
var name = 'variance';
var dependencies = ['typed', 'add', 'subtract', 'multiply', 'divide', 'apply', 'isNaN'];
/**
 * Attach a transform function to math.var
 * Adds a property transform containing the transform function.
 *
 * This transform changed the `dim` parameter of function var
 * from one-based to zero based
 */

export var createVarianceTransform = /* #__PURE__ */factory(name, dependencies, (_ref) => {
  var {
    typed,
    add,
    subtract,
    multiply,
    divide,
    apply,
    isNaN
  } = _ref;
  var variance = createVariance({
    typed,
    add,
    subtract,
    multiply,
    divide,
    apply,
    isNaN
  });
  return typed(name, {
    '...any': function any(args) {
      // change last argument dim from one-based to zero-based
      if (args.length >= 2 && isCollection(args[0])) {
        var dim = args[1];

        if (isNumber(dim)) {
          args[1] = dim - 1;
        } else if (isBigNumber(dim)) {
          args[1] = dim.minus(1);
        }
      }

      try {
        return variance.apply(null, args);
      } catch (err) {
        throw errorTransform(err);
      }
    }
  });
}, {
  isTransformFunction: true
});