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Re: Fuzzy searching of FITS header [message #74120 is a reply to message #74119]

Tue, 21 December 2010 20:50

penteado
Messages: 866
Registered: February 2018

Senior Member
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On Dec 21, 11:11 pm, Paulo Penteado <pp.pente...@gmail.com> wrote:
> On Dec 21, 9:00 pm, Gray <grayliketheco...@gmail.com> wrote:
>
>> I'm envisioning a routine that uses lists and hashes to return the
>> keyword and value for all keywords that match any number of search
>> strings... do I have the time/energy to write it?
>
> I was just writing something like that as an example for a class.
> Similar to what the new graphics do to find elements by search strings
> (like axes=plot['*axis*']). I will post it later.

It is not complete (not even documented), but it already does that:

http://www.ppenteado.net/idl/pp_lib/src/pp_readfits__define. pro

I started this as an example for a class, but due to some recent needs
I noticed when using fits files, I intend to give it a more complete
functionality, with things like processing coordinates through wcs,
calculating wavelengths, and allowing to edit and save files.

An example of how it works now:

IDL> fits=pp_readfits('test.fits')
% READFITS: Now reading 256 by 256 array
IDL> help,fits.data
<Expression> LONG = Array[256, 256]
IDL> help,fits.header
<Expression> STRING = Array[184]
IDL> help,fits.variables
<Expression> HASH <ID=746 NELEMENTS=181>
IDL> help,fits.descriptions
<Expression> HASH <ID=1117 NELEMENTS=181>
IDL> print,(fits.variables)['NAXIS']
2
IDL> print,(fits.descriptions)['NAXIS']
Number of axes
IDL> print,fits['NAXIS']
NAXIS: 2
IDL> print,fits['NAXIS*']
NAXIS2: 256
NAXIS: 2
NAXIS1: 256

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[Message index]

		Re: Fuzzy searching of FITS header By: penteado on Wed, 22 December 2010 11:44
		Re: Fuzzy searching of FITS header By: Gray on Wed, 22 December 2010 05:45
		Re: Fuzzy searching of FITS header By: Gray on Wed, 22 December 2010 05:40
		Re: Fuzzy searching of FITS header By: wlandsman on Wed, 22 December 2010 05:06
		Re: Fuzzy searching of FITS header By: penteado on Tue, 21 December 2010 20:50
		Re: Fuzzy searching of FITS header By: Marc Buie on Tue, 21 December 2010 19:49
		Re: Fuzzy searching of FITS header By: penteado on Tue, 21 December 2010 17:11
		Re: Fuzzy searching of FITS header By: David Fanning on Tue, 21 December 2010 15:38
		Re: Fuzzy searching of FITS header By: Gray on Tue, 21 December 2010 15:00
		Re: Fuzzy searching of FITS header By: wlandsman on Tue, 21 December 2010 14:59
		Re: Fuzzy searching of FITS header By: David Fanning on Tue, 21 December 2010 14:23

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