Package Exports

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (w-fft) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

w-fft

A tool for FFT.

Documentation

To view documentation or get support, visit docs.

Example

To view some examples for more understanding, visit examples:

spectrum1d: ex-spectrum1d.html [source code]

Installation

Using npm(ES6 module):

Note: w-fft is mainly dependent on ml-fft, lodash-es and wsemi.

npm i w-fft

Example for FFT1D and iFFT1D:

Link: [dev source code]


let arr
let res

arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
res = wf.fft1d(arr)
console.log(res)
// => [
//   [ 120, 0 ],
//   [ -8, 40.21871593700678 ],
//   [ -8, 19.31370849898476 ],
//   [ -7.999999999999999, 11.972846101323913 ],
//   [ -8, 8 ],
//   [ -8, 5.345429103354391 ],
//   [ -8, 3.313708498984761 ],
//   [ -7.999999999999999, 1.5912989390372623 ],
//   [ -8, 0 ],
//   [ -7.999999999999999, -1.5912989390372623 ],
//   [ -8, -3.313708498984761 ],
//   [ -8, -5.345429103354391 ],
//   [ -8, -8 ],
//   [ -7.999999999999999, -11.972846101323913 ],
//   [ -8, -19.31370849898476 ],
//   [ -8, -40.21871593700678 ]
// ]

arr = [
    [120, 0],
    [-8, 40.21871593700678],
    [-8, 19.31370849898476],
    [-7.999999999999999, 11.972846101323913],
    [-8, 8],
    [-8, 5.345429103354391],
    [-8, 3.313708498984761],
    [-7.999999999999999, 1.5912989390372623],
    [-8, 0],
    [-7.999999999999999, -1.5912989390372623],
    [-8, -3.313708498984761],
    [-8, -5.345429103354391],
    [-8, -8],
    [-7.999999999999999, -11.972846101323913],
    [-8, -19.31370849898476],
    [-8, -40.21871593700678]
]
res = wf.ifft1d(arr)
console.log(res)
// => [
//    0,                  1,
//    2, 3.0000000000000018,
//    4,  5.000000000000002,
//    6,                  7,
//    8,                  9,
//   10, 10.999999999999998,
//   12, 12.999999999999998,
//   14,                 15
// ]

In a browser(UMD module):

Note: w-fft does not dependent on any package.

Add script for w-fft.

<script src="https://cdn.jsdelivr.net/npm/w-fft@1.0.5/dist/w-fft.umd.js"></script>