time-to-botec/js/node_modules/@stdlib/stats/iter/sumabs2
NunoSempere b6addc7f05 feat: add the node modules
Necessary in order to clearly see the squiggle hotwiring.
2022-12-03 12:44:49 +00:00
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itersumabs2

Compute the sum of squared absolute values for all iterated values.

The sum of squared absolute values is defined as

Equation for the sum of squared absolute values.

Usage

var itersumabs2 = require( '@stdlib/stats/iter/sumabs2' );

itersumabs2( iterator )

Computes the sum of squared absolute values for all iterated values.

var array2iterator = require( '@stdlib/array/to-iterator' );

var arr = array2iterator( [ -1.0, 2.0, -3.0, 4.0 ] );

var s = itersumabs2( arr );
// returns 30.0

Notes

  • If an iterated value is non-numeric (including NaN), the returned iterator returns NaN. If non-numeric iterated values are possible, you are advised to provide an iterator which type checks and handles non-numeric values accordingly.
  • For iterators which can generate many values or which may output large numbers, care should be taken to prevent overflow.

Examples

var runif = require( '@stdlib/random/iter/uniform' );
var itersumabs2 = require( '@stdlib/stats/iter/sumabs2' );

// Create an iterator for generating uniformly distributed pseudorandom numbers:
var rand = runif( -10.0, 10.0, {
    'seed': 1234,
    'iter': 100
});

// Compute the sum of squared absolute values:
var s = itersumabs2( rand );
// returns <number>

console.log( 'sumabs2: %d.', s );