[Kst] extragear/graphics/kst/kst/datasources/healpix

[Brisset, Nicolas]

> actually you are correct, if I go into tests/healpix and run:
> 
> $> kst -z "1 - TEMPERATURE (Kelvin)" healpix_example_sm.fits
> 
> it does the same as
> 
> $> kst -z 1 healpix_example_sm.fits
> 
> and correctly reads the field.  
OK, now I know why it dod not work when I tested it with a cdf file: I
thought the data file needed to be preceded with "-F" like in :
"kst -x INDEX -Y VECTOR1 -F file.cdf" while actually I need to type:
"kst -x INDEX -Y VECTOR1 file.cdf"

I think "kst --help" is misleading wrt to the "-F <dataFile>" option, or
maybe it's a bug ?

Nicolas