Merge pull request #6 from bvanderdrift/master

Uncomment `applyWindow` helper

Author: dy

README.md

@@ -16,6 +16,16 @@ To require all window functions, include the top-level `window-function` module:
 ```javascript
 var wfuncs = require('window-function')
 
+var signal = [-1, 0, 1, 0, -1, 0]
+
+var windowedSignal = wfuncs.applyWindow(signal, wfuncs.blackmanHarris)
+```
+
+You can also apply the window functions yourself:
+
+```javascript
+var wfuncs = require('window-function')
+
 var value = wfuncs.blackmanHarris( 50, 101 )
 ```
 

index.js

@@ -17,10 +17,10 @@ module.exports = {
   flatTop: require('./flat-top'),
   cosine: require('./cosine'),
   gaussian: require('./gaussian'),
-  tukey: require('./tukey')
+  tukey: require('./tukey'),
+  applyWindow: applyWindow
 }
 
-/*
 function applyWindow(signal, func) {
   var i, n=signal.length, args=[0,n]
 
@@ -36,7 +36,7 @@ function applyWindow(signal, func) {
   return signal;
 }
 
-
+/*
 function generate(func, N) {
   var i, args=[0,N]
   var signal = new Array(N);

test/test.js

@@ -45,7 +45,7 @@ describe('window functions return a finite number',function() {
   })
 })
 
-/*describe('applies a window function',function() {
+describe('applies a window function',function() {
 
   var x
 
@@ -54,18 +54,19 @@ describe('window functions return a finite number',function() {
   })
 
   it('applies a window to a signal',function() {
-    wfunc.window( x, wfunc.hamming )
+    var y = wfunc.applyWindow( x, wfunc.hamming )
+    assert(y.length === x.length);
   })
 
   it('passes extra arguments to a window function',function() {
-    wfunc.window( x, wfunc.gaussian, 0.1 )
+    wfunc.applyWindow( x, wfunc.gaussian, 0.1 )
     assert( isFinite(x[0]), 'samples are finite' )
     assert( x[0] < 1e-8, 'samples have been windowed' )
   })
 })
 
 
-
+/*
 describe('generates a window function',function() {
   
   it('constructs an window function array',function() {