[Obscore1.1] WD comments

[CresitelloDittmar, Mark]

Thanks Doug..

My recollection is that these items were originally going to be added as an
image-specific extension of ObsCore.
This document has them incorporated into the ObsCore table proper, and the
language (number of samples)
seems generalized to include non-pixelated datasets.

Since these are being added to the required element list, the text should
be very clear about what goes in there for unbinned datasets.

Mark


On Wed, Jun 24, 2015 at 9:06 PM, Douglas Tody <dtody at nrao.edu> wrote:

> On Wed, 24 Jun 2015, CresitelloDittmar, Mark wrote:
>
>> pg 25: Axes dimensions
>>  Outside of the pixelated image context, what values do these hold?
>>  For example, the sparse cube (ie: event list).  do each of these hold
>>  the #events? or are s_dim1,s_dim2 ==  the span along that axis? and
>>  if so, in what frame?
>>  It seems that #events is closest to the description as the number of
>> samples.
>>
>
> For event data which is not imaged, such as an event list, probably the
> best one can do is have t_dim specify the number of events.  The spatial
> coverage would be specified with s_fov and the spectral coverage with
> em_min/max.  The binning on the spatial and spectral axes is meaningless
> and should be zero.  If a precomputed image for the observation is also
> provided, that would have all the dim values and would share the same
> obs_id.
>
>         - Doug
>
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