https://github.com/mikolalysenko/phase-unwrap

Phase unwrapping for ndarrays
https://github.com/mikolalysenko/phase-unwrap

Last synced: about 2 months ago
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Phase unwrapping for ndarrays

• Host: GitHub
• URL: https://github.com/mikolalysenko/phase-unwrap
• Owner: mikolalysenko
• License: mit
• Created: 2013-06-16T15:38:58.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2013-06-27T20:13:57.000Z (over 11 years ago)
• Last Synced: 2024-10-20T14:28:04.165Z (2 months ago)
• Language: JavaScript
• Size: 130 KB
• Stars: 4
• Watchers: 4
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
  phase-unwrap

============

1D phase unwrapping

## Example

```javascript

var ndarray = require("ndarray")

var unwrap = require("phase-unwrap")

var plot = require("plotter").plot

//Create a signal

var x = ndarray.zeros([100])

require("ndarray-fill")(x, function(i) {

  return (0.25 * i) % (2.0 * Math.PI)

})

//Plot input signal

plot({

  data:  Array.prototype.slice.call(x.data),

  filename: "input.svg"

})

//Unwrap

unwrap(x)

//Plot unwrapped signal

plot({

  data:  Array.prototype.slice.call(x.data),

  filename: "unwrapped.svg"

})

```

And here are the results:

### Input signal



### Unwrapped signal



## Install

    npm install phase-unwrap

    

### `require("phase-unwrap")(signal)`

Unwraps the phase angle of a signal whose values are between 0 and 2pi to a continuous signal.

* `signal` is a 1D ndarray of values

**Returns** An `signal`.  Note that the unwrapping modifies signal.

## Credits

(c) 2013 Mikola Lysenko. MIT License