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

Ted Kisner tskisner.public at gmail.com
Wed Nov 2 17:52:47 CET 2005

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.  Unfortunately, for healpix I use fieldnames 
that are created based on the contents of the file that may not be known 
ahead of time.  So for me it is nice to have the single number alias.

But you are right that this is technically unnecessary.  For the ascii 
datasource reading a matrix- I found (at least with the tests/asciimatrix.txt 
example) that I needed to change the options in the config widget that 
specified to skip the first row and use row zero for field labels before it 
would recognize it as a valid ascii matrix.

Perhaps this is why reading from the commandline fails for ascii matrices- we 
need to tell it to skip the first line and read fields from line 0 when we 
create the matrix from the command line.


On Wednesday 02 November 2005 08:19, Brisset, Nicolas wrote:
> > So any datasource that wants to be able to load a
> > matrix/image from the command line could just use this as an
> > example and implement the same feature.
> I thought it was possible to load vectors by name from the command line,
> but I have just tried it with cdf and it does not seem to work. I don't
> understand why that would not work, and I would rather make it work than
> implement the "number aliasing" feature for all datasources. By the way,
> wouldn't it be possible to factor this out of datasources: if the fields
> given in the commandline are numbers, request them by number in the
> field list as returned by fieldList(), otherwise by name ?
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