> How do we do a 3d ard file description? We are trying to specify a
> pixel in a 3d time series and we get this:
>
> COFRAME(PIXEL)
> .NOT. PIXEL(16,20,1)
Have you tried with a
DIMENSION(3)
statement at the start of your ARD file?
> How do we specify a cylinder? I thought we did something like that but
> I'm worried that code was implemented by Peter in his private (but
> possibly should be in kappa) ard action used by GAIA.
In the Version 2.1 changes to ARD
"The user coordinate system used to describe positions and shapes within
an ARD expression can now refer to a sub-space of the axes defined in
the application WCS FrameSet. For instance, if the application is an
(RA,Dec,freq) cube, an ARD expression can be used that refers only to
the freq axis, in which case the same frequency region will be masked in
all (ra,dec) planes."
So it looks possible. I've often wanted more examples in SUN/183.
Malcolm
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