[postgis-devel] ST_Union specification questions

[Bryce L Nordgren]

On Tue, Nov 22, 2011 at 12:16 AM, Paragon Corporation <lr at pcorp.us> wrote:

> **
> Bryce,
>
> We'll make sure to note it with a warning notice.  There are also
> workarounds for lower versions of postgreSQL which aren't too bad.
> Like example we show here:
> http://www.postgis.org/documentation/manual-svn/ST_MakeLine.html
>


That makes perfect sense.


>
> I think for PostGIS 2.0 we want to get out something useful and relatively
> easy to use which won't be perfect (time is running out since December is
> just around the corner and feature freeze time)
>
>
Ahh, full circle back to the first part of my question. From the specs, can
you tell how many bands are returned from ST_Union, or how the three sets
of p_*, t_*, and f_* expressions are related to the output? If so, can you
explain it to me?

Bryce
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