comp.lang.idl-pvwave archive: archive » Re: Fuzzy searching of FITS header

Home » Public Forums » archive » Re: Fuzzy searching of FITS header

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Fuzzy searching of FITS header [message #74109]

Wed, 22 December 2010 11:44

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

On Dec 22, 2:50 am, Paulo Penteado <pp.pente...@gmail.com> wrote:
> 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

Now that I thought more about this, it seems it would be better to not
always return hashes from the brackets overload. If only one element
is found, returning directly the value seems more natural ans useful
than a 1-element hash. And if none is found, returning !null seems
better than an empty hash.

Report message to a moderator

[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

Previous Topic:	idlgrtext fixed-width font
Next Topic:	Re: idlgrtext fixed-width font

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 17:02:29 PDT 2025

Total time taken to generate the page: 0.00388 seconds