Boxes and Polygons in ADQL/STC. Questions and recommendation.

Roy Williams roy at cacr.caltech.edu
Sat Oct 24 12:02:01 PDT 2009


Maybe the best is to forget the confusing word BOX and simply not use it.

Then we have POLYGON, CONE, RECT as the principle concepts. For an image 
specified by corners, it is a 4-POLYGON.

Roy



John Good wrote:
> Roy -
>
>> My point is that I suspect 90% of region queries will, in reality, be 
>> RECT or CONE. We should make sure this works well in the prototypes, 
>> perhaps delay the more complex region implementation until these two 
>> work well?
> Not true.  Cone is probably the most common but the next most common
> is people trying to get sources that match an image, which is hardly ever
> a RECT (and is in fact usually more like a rotated BOX).
>
> - John
>

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California Institute of Technology
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