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Re: howto make a fits cube in IDL? [message #56659 is a reply to message #56654]

Wed, 07 November 2007 12:26

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Wayne Landsman writes:

> This looks like a case for using the "Binary table" FITS format.
> The routines MWRFITS and MRDFITS give a nice mapping between IDL
> structures and FITS binary tables. So say you have 200 X,Y points and
> that at each X,Y you have a temperature and velocity spectrum with 60
> points.
>
> IDL> str = {x:0, y:0, temperature:fltarr(60), velocity:fltarr(60) }
> IDL> str = replicate(str, 200)
>
> (If the number of points are not all the same in each spectra then you
> could use pointers rather than fixed arrays.)
>
> Then you fill the structure with the actual values, and finally write
> the structure to a FITS file
>
> IDL> mwrfits,str,'myfile.fits'

Get out!!

I had a similar question, but I was too embarrassed to ask here.
But this is WAY too easy. I was hoping to bill about 40 hours
on this part of the code. :-(

I better go read up on FITS files.

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: howto make a fits cube in IDL? By: Tigran Khanzadyan on Wed, 07 November 2007 22:24
		Re: howto make a fits cube in IDL? By: David Fanning on Wed, 07 November 2007 12:26
		Re: howto make a fits cube in IDL? By: wlandsman on Wed, 07 November 2007 11:54

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