| Re: FITS IO Problem [message #70642] |
Mon, 26 April 2010 15:52  |
John B
Messages: 5
Registered: April 2010
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Junior Member |
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On Apr 25, 12:37 pm, John B <bochan...@gmail.com> wrote:
> On Apr 24, 4:08 pm, Craig Markwardt <craig.markwa...@gmail.com> wrote:
>
>
>
>> On Apr 24, 9:18 am, John B <bochan...@gmail.com> wrote:
>
>>> On Apr 24, 8:09 am, wlandsman <wlands...@gmail.com> wrote:
>
>>>> > Readfits.pro is choking since this isn't a standardfitsfile (NAXIS
>>>> > isn't defined). Is there another one I can use?
>
>>>> There is a nice (non-IDL) program FITSVerify ( http://heasarc.gsfc.nasa.gov/docs/software/ftools/fitsverify /) to
>>>> check the validity of aFITSfile. You can also upload yourFITS
>>>> file to the online verifier.
>
>>> Cool. I submitted it and got this error:
>
>>> File name: test.fits
>>> Run Number 8232
>
>>> fitsverify 4.15 (CFITSIO V3.181)
>>> --------------------------------
>
>>> 2 Header-Data Units in this file.
>
>>> =================== HDU 1: Primary Array ===================
>
>>> 1 | SIMPLE = T /Dummy Created by MWRFITS v1.4a
>>> 2 | BITPIX = 8 /Dummy primary header created by
>>> MWRFITS
>>> 3 | NAXIS = 0 /No data is associated with this
>>> header
>>> 4 | EXTEND = T /Extensions may (will!) be
>>> present
>>> 5 | END
>
>>> 5 header keywords
>
>>> Null data array; NAXIS = 0
>
>>> =================== HDU 2: BINARY Table ====================
>
>>> *** Error: checking data fill: tried to move past end of file
>>> *** Error: String in row #3, column #3 contains non-ASCII text.
>>> (Other rows may have errors).
>
>>> I don't know entirely how to interpret this.
>
>>>> Does MWRFITS work with the simple examples provided in the
>>>> documentation?
>
>>> Yes, MWRFITS is working for other applications on my system.
>
>>>> You wouldn't be using GDL (the free IDL clone) rather than IDL, would
>>>> you? I recently discovered that GDL has a slightly different
>>>> treatment of nested loops than IDL, that led to disastrous
>>>> consequences for a different set ofFITSI/O routines.
>
>>> Nope... I am using IDL.
>
>>> --Wayne
>
>> Are you by any chance overwriting an existing file? To me it looks
>> like you attempted to write a file, but it got stopped after writing
>> the primary extension. If the bits from the previous existing file
>> are still there, then it would look like a bogus 2ndFITSextension.
>
>> Craig
>
> Hi Craig,
> No, I am writing a new file each time.
>
> Cheers,
> John
It seems that updating to the latest astrolib version took care of the
problem. Thanks for all your help.
John
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