irfft2

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Description

Reverses a Real Fast Fourier Transform on any linear array whose number of elements is a power of 2.

This function will only function properly on a 1xNx1 where N is a power of 2. It will assume all other columns to be linear extensions of the first column. The is the reverse function of rfft2().

Arguments and Return Values

Arguments: A linear numeric array

Return Value: A linear numeric array of doubles

Usage

Syntax: irfft2(obj = VAL)

If you have an array that does not contain 2^N elements, then you must pad the end of the array with zeros to the nearest power of two.

Examples

dv> b
1x256x1 array of float, bsq format [1,024 bytes]

dv> a=irfft2(a)
1x256x1 array of double, bsq format [2,048 bytes]

Images

rfft2b.png rfft2a.png

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Related Functions

Recent Core Changes

Modified On: 05-30-2006

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