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Re: simple vectorizing problem [message #62426]

Wed, 10 September 2008 17:14

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

dpm314 writes:

> I have these image arrays and need to perform several functions on
> them which return a scalar (or a 6 element array) for each image in a
> large stack. Is there *in general* a way to so something like:
>
> results = fltarr(num_images)
> results = myFunctThatDoesSomeAnalysis(image)
> ;now results holds an array of scalars for the result of
> myFunctThatDoesSomeAnalysis() on each image
>
> without either using a loop here or inside the analysis function
> iterating over each frame in the image?

I still don't have a good idea about what you are asking for,
but I suspect now it is because I have never worked with
a modern language. This must be something you can do in
C##.

But, I do have a great deal of confidence in saying that
in general (depending, of course, on what exactly
myFunctThatDoesSomeAnalysis actually *does*) that you
are going to need a loop *somewhere*.

IDL is *not* a modern language. It's near 25 years old.
And while it has a few tricks up its sleeve, it still has
more similarities to BASIC and FORTRAN than to C++.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: simple vectorizing problem By: David Fanning on Wed, 10 September 2008 17:14
		Re: simple vectorizing problem By: dpm314 on Wed, 10 September 2008 16:53
		Re: simple vectorizing problem By: Foldy Lajos on Tue, 09 September 2008 02:58
		Re: simple vectorizing problem By: Chris[6] on Tue, 09 September 2008 01:50
		Re: simple vectorizing problem By: David Fanning on Mon, 08 September 2008 19:17
		Re: simple vectorizing problem By: dpm314 on Mon, 08 September 2008 18:48
		Re: simple vectorizing problem By: JD Smith on Thu, 11 September 2008 11:56
		Re: simple vectorizing problem By: Spon on Thu, 11 September 2008 05:15

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