Chris Beaumont's IDL Library

Download source code

single page | use frames     summary     class     fields     routine details     file attributes

./

fft_kind.pro

Routines

fft_kind, array, x1, x2, x3, x4, x5, x6, x7, x8 [, t=t]

This procedure calculates the vector wavenumber at each pixel in an n-dim fft array.

test

Routine details

topfft_kind

fft_kind, array, x1, x2, x3, x4, x5, x6, x7, x8 [, t=t]

This procedure calculates the vector wavenumber at each pixel in an n-dim fft array. It's like indices.pro, except that the k's are normalized and shifted correctly to match the default structure of IDL's FFT command.

Parameters

array in required

An n-dimensional array (presumably an fft of something)

x1
x2
x3
x4
x5
x6
x7
x8

Keywords

t in optional

The spacing between each pixel in the pre-FT space. Scalar or vector of length equal to the dimensionality of array. The k value at each pixel in FFT space is 2 pi n/(N * T), where n is an integer, N is the number of pixels along a dimension, and T is the spacing (see FFT documentation). Defaults to 1

toptest

test

File attributes

Modifcation date: Fri Jul 30 18:55:34 2010
Lines: 84