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Re: fits_help issues again/still [message #67427 is a reply to message #67426]

Thu, 23 July 2009 14:00

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Barbara writes:

> this is what it tells me:
>
> % FITS_OPEN: ERROR: OPENR: Error opening file. Unit: 100
> File: C:\Documents and Settings\kerri_2\Desktop
> \medvar_IDL_
> stuff\spec6sep080079.a.fits
> % Expression must be a structure in this context: FCB.
> % Execution halted at: FITS_HELP 62 C:\Documents and
> Settings\kerri_2\Desktop\Course_Files\astrolib\pro\fits
> \fits_help.pro
> % $MAIN$

Well, I would say the most likely explanation is that whatever
you passed to FITS_HELP wasn't what it was expecting. Was
it the name of a FITS file? Or was it an IDL structure
variable? You can use the "HELP, variable" syntax to
find out what it was. If it is a structure, set the /STRUCTURE
keyword to the HELP command so you can see what fields it
has in it. Is there a field named "extname"?

Cheers,

David
--
David Fanning, Ph.D.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: fits_help issues again/still By: penteado on Thu, 23 July 2009 15:22
		Re: fits_help issues again/still By: penteado on Thu, 23 July 2009 15:13
		Re: fits_help issues again/still By: David Fanning on Thu, 23 July 2009 14:43
		Re: fits_help issues again/still By: David Fanning on Thu, 23 July 2009 14:22
		Re: fits_help issues again/still By: Barbara on Thu, 23 July 2009 14:18
		Re: fits_help issues again/still By: Barbara on Thu, 23 July 2009 14:07
		Re: fits_help issues again/still By: David Fanning on Thu, 23 July 2009 14:00
		Re: fits_help issues again/still By: Barbara on Thu, 23 July 2009 13:43
		Re: fits_help issues again/still By: David Fanning on Thu, 23 July 2009 13:41

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