[Kst] [Bug 125329] FITS blank pixel value ignored

Ted Kisner tskisner.public at gmail.com
Tue Apr 11 08:56:54 CEST 2006

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------- Additional Comments From tskisner.public gmail com  2006-04-11 08:56 -------
According to the FITSIO standard, tables and images containing 
*floating-point* NULL values have these cells/pixels set to NaN.  So kst 
should already ignore such entries.

Could you provide an example FITS file where the file has NULL pixel/element 
values that are not returned as NaN's in fits_read_col?


On Monday 10 April 2006 16:59, D.V.Wiebe wrote:
| kst fails to honour the BLANK card of the FITS header.
| FITS files generally have a BLANK card in the headers which indicate the
| value which is assigned to pixels that are uninitialised.
| kst ignores this value: instead it paints these unintialised pixels the
| colour corresponding to the BLANK pixel value.
| Ideally, these pixels should not be painted.

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