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Re: How to convert text file to fits file [message #70589 is a reply to message #70587]

Thu, 22 April 2010 13:11

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Apr 22, 7:21 am, sid <gunvicsi...@gmail.com> wrote:
> Hi,
> I am having text file with two columns one is wavelength and
> intensity, I need to convert this to fits file, please help me out in
> this regard
> regards

A general outline.

First, get the IDL Astronomy Library if you don't already have it.

Next, read your data into IDL variables. It's pretty easy to do
something like,
OPENR, 50, 'myfile.dat'
DD = replicate({wavelength: 0d, intensity: 0d}, 100) ;; example;
assumes 100 data points
READF, 50, dd ;; Read data into a structure
CLOSE, 50

Finally, write to a FITS binary table. The easiest routine to start
with is MWRFITS.
MWRFITS, dd, 'myfile.fits'

Of course there are endless variations on data and FITS files, but
this should get you started. I just did a practice file, and all
these steps worked.

Good luck,
Craig

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[Message index]

		Re: How to convert text file to fits file By: Craig Markwardt on Thu, 22 April 2010 16:32
		Re: How to convert text file to fits file By: David Fanning on Thu, 22 April 2010 13:19
		Re: How to convert text file to fits file By: Craig Markwardt on Thu, 22 April 2010 13:11
		Re: How to convert text file to fits file By: sid on Mon, 26 April 2010 22:18

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