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Re: reading images stored compressed in FITS files binary extensions [message #70396 is a reply to message #70389]

Thu, 08 April 2010 12:44

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Apr 8, 2:33 pm, Jeremy Bailin <astroco...@gmail.com> wrote:
> Does anyone know what routine in the astronomy user's library (or any
> other routine) can read in an image that's stored compressed in the
> binary extension of a FITS file?

This looks like a "pixel list" (PLIO) compressed file, which can be
uncompressed with FPACK software
( http://heasarc.gsfc.nasa.gov/fitsio/fpack/ ).

Once you have FPACK installed, you can read the file directly with
readfits.pro http://idlastro.gsfc.nasa.gov/ftp/pro/fits/readfits.pro )
or mrdfits.pro. These procedures use a SPAWN with a bidirectional
pipe to FPACK to stream the images into IDL variables.

Cheers, --Wayne

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[Message index]

		Re: reading images stored compressed in FITS files binary extensions By: Jeremy Bailin on Fri, 09 April 2010 06:26
		Re: reading images stored compressed in FITS files binary extensions By: wlandsman on Thu, 08 April 2010 12:44

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