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Re: Convolving speed issue [message #59956 is a reply to message #59844]

Mon, 21 April 2008 11:25

rogass
Messages: 200
Registered: April 2008

Senior Member

Dear Paolo,
yes, it isnt so much slower. I could also use fftw, which is available
for matlab and also for IDL. But nevertheless, I had to convolve it
directly and not in frequency domain. The problem is that the matrices
could be very large (their size is changing dynamically) and there are
also some iterations (nearly 200) for each convolve. So I always try
to use as often as possible reform, replicate and rebin, because those
are very fast for manipulating or computing arrays.

But, unfortnately I'm not able to exchange the for-to loops
completely. I think, it's quite difficult to do this in the way I
mentioned above.

But thanks again for answer, Paolo

Any other ideas?

Best regards

Chris

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[Message index]

		Convolving speed issue By: rogass on Thu, 17 April 2008 09:29
		Re: Convolving speed issue By: Paul Van Delst[1] on Mon, 21 April 2008 12:21
		Re: Convolving speed issue By: pgrigis on Mon, 21 April 2008 11:39
		Re: Convolving speed issue By: rogass on Mon, 21 April 2008 11:25
		Re: Convolving speed issue By: pgrigis on Mon, 21 April 2008 08:24

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