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compute-dot
Advanced tools
Computes the dot product between two arrays.
$ npm install compute-dot
For use in the browser, use browserify.
var dot = require( 'compute-dot' );
Computes the dot product between two arrays
of equal length.
var val = dot( [1,2,3], [4,5,6] );
// returns 32
To compute the dot product between nested array
values, provide an accessor function
for accessing numeric
values.
var x = [
{'x':2},
{'x':4},
{'x':5}
];
var y = [
[1,3],
[2,1],
[3,5]
];
function getValue( d, i, j ) {
if ( j === 0 ) {
return d.x;
}
return d[ 1 ];
}
var val = dot( x, y, getValue );
// returns 35
The accessor function
is provided three arguments:
x
has index 0
and array y
has index 1
.If provided empty arrays
, the function returns null
.
var dot = require( 'compute-dot' );
// Simulate some data...
var x = new Array( 100 ),
y = new Array( 100 );
var val;
for ( var i = 0; i < x.length; i++ ) {
val = Math.round( Math.random()*100 ) + 1;
x[ i ] = val;
if ( i % 2 === 0 ) {
val = -val;
}
y[ i ] = 1 / val;
}
console.log( dot( x, y ) );
// returns ~0 (floating-point errors)
To run the example code from the top-level application directory,
$ node ./examples/index.js
Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:
$ make test
All new feature development should have corresponding unit tests to validate correct functionality.
This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:
$ make test-cov
Istanbul creates a ./reports/coverage
directory. To access an HTML version of the report,
$ make view-cov
Copyright © 2014-2015. Athan Reines.
FAQs
Computes the dot product between two numeric arrays.
The npm package compute-dot receives a total of 0 weekly downloads. As such, compute-dot popularity was classified as not popular.
We found that compute-dot demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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Product
Socket now supports Scala and Kotlin, bringing AI-powered threat detection to JVM projects with easy manifest generation and fast, accurate scans.
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