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

[John Good]

That's all we ever use.  If I wanted to have a range of RA, Dec
I would just put that in as a relational constraint on those fields.

- John


Roy Williams wrote:
> 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
>>
>