[iaufwg] Voting result on the FITS Standard

Steve Allen sla at ucolick.org
Tue May 20 14:06:58 EDT 2008


On Tue 2008-05-20T10:27:56 -0400, William Thompson hath writ:
> Nearest neighbor is an interpolation technique which is appropriate for binned data.

This might be interpreted in a way that assumes a metric for the pixel
coordinates.  I assert that it is an egregious error to apply a metric
to the pixel coordinates.  A metric only exists in for suitable types
of world coordinates.  There is language in Calabretta's Paper IV draft
that touches upon such issues.

> It might be good to add a statement to the effect that the standard does not
> specify how the data are to be interpolated to fractional pixels.

Or maybe even just to leave it unspecified.

--
Steve Allen                 <sla at ucolick.org>                WGS-84 (GPS)
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