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Re: Help me aviod a FOR loop!?!? [message #30451 is a reply to message #30438]

Tue, 23 April 2002 10:06

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

Sean Davis wrote:
>
> I don't know if this is possible. I have 4 coeffecients,
> a,c,d,cd, that are each 3191-long arrays, and I would like to construct
> 3191, waveforms (of length 128) from these coefeccients.
>
> Here's what I'm trying to do:
>
> x = FINDGEN(128)
> yfit = FLTARR(128,3191)
>
> yfit = (a/cd)*( exp(-1.*c*x)-exp(-1.*d*x) )
>
> In the end, I would like yfit to be an array of (128,3191) or (3191,128).
>
> I can't figure out how to do this without using a FOR loop. Is there any
> hope for doing this without a FOR loop?

Using matrix multiplication maybe?

paulv

--
Paul van Delst Religious and cultural
CIMSS @ NOAA/NCEP purity is a fundamentalist
Ph: (301)763-8000 x7274 fantasy
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[Message index]

		Re: Help me aviod a FOR loop!?!? By: James Tappin on Thu, 25 April 2002 07:47
		Re: Help me aviod a FOR loop!?!? By: Malcolm Walters on Wed, 24 April 2002 02:01
		Re: Help me aviod a FOR loop!?!? By: gutmann on Tue, 23 April 2002 20:23
		Re: Help me aviod a FOR loop!?!? By: Paul Van Delst[1] on Tue, 23 April 2002 10:06

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