flow-variance

Reduce transform stream which calculates the variance of a numeric data stream.

Showing:

Popularity

Downloads/wk

5

GitHub Stars

1

Maintenance

Last Commit

4yrs ago

Contributors

1

Package

Dependencies

3

Size (min+gzip)

13.4KB

License

Type Definitions

Tree-Shakeable

No?

Categories

Readme

flow-variance

Reduce transform stream which calculates the sample variance over a stream of numeric data.

Installation

$ npm install flow-variance

Examples

var eventStream = require( 'event-stream' ),
    vStream = require( 'flow-variance' );

// Create some data...
var data = new Array( 1000 );
for ( var i = 0; i < data.length; i++ ) {
    data[ i ] = Math.random();
}

// Create a readable stream:
var readStream = eventStream.readArray( data );

// Create a new variance stream:
var stream = vStream().stream();

// Pipe the data:
readStream.pipe( stream )
    .pipe( eventStream.map( function( d, clbk ){
        clbk( null, d.toString() );
    }))
    .pipe( process.stdout );

Tests

Unit tests use the Mocha test framework with Chai assertions.

Assuming you have installed Mocha, execute the following command in the top-level application directory to run the tests:

$ mocha

All new feature development should have corresponding unit tests to validate correct functionality.

License

MIT license.


Copyright © 2014. Athan Reines.

Rate & Review

Great Documentation0
Easy to Use0
Performant0
Highly Customizable0
Bleeding Edge0
Responsive Maintainers0
Poor Documentation0
Hard to Use0
Slow0
Buggy0
Abandoned0
Unwelcoming Community0
100