flow-mmean v0.0.0

flow-mmean

Transform stream which calculates a sliding-window average (moving-mean) over a numeric data stream.

Installation

$ npm install flow-mmean

Examples

var eventStream = require( 'event-stream' ),
	mStream = require( 'flow-mmean' );

// 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 moving mean stream:
var stream = mStream()
	.window( 10 )
	.stream();

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

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

$ node ./examples/index.js

Tests

Unit tests use the Mocha test framework with Chai assertions.

Assuming you have globally 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

Copyright © 2014. Athan Reines.