compute-transpose

Transpose

Computes the transpose of a matrix.

Installation

$ npm install compute-transpose

For use in the browser, use browserify.

Usage

var transpose = require( 'compute-transpose' );

transpose( x[, opts] )

Computes the transpose of a matrix.

var matrix = require( 'dstructs-matrix' );
 
var mat = matrix( [2,3] );
/*
    [ 0 0 0
      0 0 0 ]
*/
 
var t = transpose( mat );
/*
    [ 0 0
      0 0
      0 0 ]
*/

By default, the function returns a new matrix instance. To mutate the input matrix, set the copy option to false.

var t = transpose( mat, {
    'copy': false
});
/*
    [ 0 0
      0 0
      0 0 ]
*/
 
var bool = ( mat === t );
// returns true

Examples

var matrix = require( 'dstructs-matrix' ),
    transpose = require( 'compute-transpose' );
 
var data,
    mat,
    t, i;
 
data = new Int8Array( 10 );
for ( i = 0; i < data.length; i++ ) {
    data[ i ] = i;
}
 
mat = matrix( data, [5,2], 'int8' );
/*
    [ 0 1
      2 3
      4 5
      6 7
      8 9 ]
*/
 
t = transpose( mat );
/*
    [ 0 2 4 6 8
      1 3 5 7 9 ]
*/

To run the example code from the top-level application directory,

$ node ./examples/index.js

Tests

Unit

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.

Test Coverage

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

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License

MIT license.

Copyright

Copyright © 2015. The Compute.io Authors.