rfft2

Contents: Description, Arguments, Usage, Examples, Images, Related Functions Supported Under Version: >1.69 Current Davinci Version: 2.27 64-bit Safe: No Description Performs 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 reverse function is irfft2(). Arguments and Return Values Arguments: A linear numeric array Return Value: A linear numeric array of doubles Usage Syntax: rfft2(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> a 1x256x1 array of float, bsq format [1,024 bytes] dv> b=rfft2(a) 1x256x1 array of double, bsq format [2,048 bytes] Images

DavinciWiki Mini-Nav Bar Contents Functions Function Categories Common Procedures Glossary Download Davinci Change Log News Mailing List Contact Developers davinci-dev [AT] mars.asu.edu All other topics See navigation on the left Related Functions irfft2 rfft Recent Core Changes Change Log Modified On: 05-30-2006