[iaufwg] Voting result on the FITS Standard

[Steve Allen]

On Mon 2008-05-19T18:49:57 -0400, William Thompson hath writ:
> Integral pixel coordinate values coincide with the corresponding array indices,
> while fractional pixel coordinate values lie between array indices and thus
> imply interpolation.

I see that we are on the verge of adding content to the standard
by talking about fractional pixel coordinate values.

The GeoTIFF spec has a flag indicating whether the array values
should be interpreted as "point samples" or "bins".
FITS has never had this.

Bins have boundaries, samples can be interpolated.
The former is implicitly best interpolated akin to a histogram,
the other raises questions of multidimensional splines.
It's a potentially contentious subject.

If we include language which goes any further than the text in
the WCS paper we may be making a substantive modification.

--
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