comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » FFTs in IDL

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: FFTs in IDL [message #5875 is a reply to message #5760]

Tue, 27 February 1996 00:00

Achim Hein
Messages: 42
Registered: February 1996

Member

<As far as I understand the FFT pro in PV-Wave is using the basic Cooley -
<Tukey
<algorithm which works best with the arrays that are power of two. There
<is a
<number of better routines, one, for instance written by Ron Mayer which
<includes many optimizations and is quite fast.

<I wonder if anybody ( I mean users ) managed to write or adopt any other
<than
<the abovementioned "basic" pro for the Wave....

And thats exactly the point where this discussion began.'Is zero-padding a
stupid thing to do'?!

But I have to transform arrays gt 2 GByte (naturally power of two) and I
am very interested in 'high speed' Fourier-Transform-Algorithms. Is there
a paper of Ron Mayer or anything else?

Thanks

Achim Hein
Center for Sensor Systems
Optimal Signal Processing, Remote Sensing - SAR
University of Siegen
Germany

Report message to a moderator

[Message index]

		FFTs in IDL By: tom on Thu, 15 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Fri, 23 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Achim Hein on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Achim Hein on Tue, 27 February 1996 00:00

Previous Topic:	For IDL and vgrind users: sample vgrindefs
Next Topic:	polar surface plots

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 19:28:19 PDT 2025

Total time taken to generate the page: 0.00281 seconds