[postgis-users] Polygon Union

[Paul Ramsey]

select geomunion(the_geom) from the_table [group by useful_attribute];

geomunion is the one spatial aggregate we have done so far

On Tuesday, February 24, 2004, at 12:06 PM, Ralph Mason wrote:

> I know I am probably missing something very simple here.
>
> But how would I find the smallest polygon bounding a set of 
> overlapping polygons?
>
> Thanks
> Ralph
>
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      Paul Ramsey
      Refractions Research
      Email: pramsey at refractions.net
      Phone: (250) 885-0632