[Obscore1.1] WD comments

[Laurent MICHEL]

Hello,

I do not think that t_dim is better suited than e_dim or s_dim to 
specify the number of events. Finally, an event is just a point within a 
4dims space (S1/S2/E/T) and none of these axes has a special role.
Considering that, I think the number of events should be reported in all 
*_dim columns. The ambiguity about binned axes or not is removed by the 
appropriate "dataproduct_type" value.

Laurent

Le 25/06/2015 03:06, Douglas Tody a écrit :
> 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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