[postgis-users] Is GeomUnion() now ST_Union()?

[Andy Anderson]

Ah, missed this one very clear message amongst the plethora my search  
returned.

I see that the request for a documentation fix was made here, also  
(nine months ago). Looking at the documentation, I see a place to  
report bugs in PostGIS <http://postgis.refractions.net/docs/ 
ch07.html>, but does this include documentation "bugs"? :-)

-- Andy

On May 16, 2008, at 11:37 AM, Håvard Tveite wrote:

> See <URL: http://www.postgis.org/pipermail/postgis-users/2007- 
> August/016816.html >
>
> ST_Union seems to replace GeomUnion.
>
> Håvard
>
> Andy Anderson wrote:
>>>  select a.gid, geomunion(b.the_geom)
>> Being new to PostGIS, I've been looking at other people's code
>> snippets and trying to figure out what they do. I'm a bit mystified
>> by "geomunion()", though, as it's not in the PostGIS docs, though
>> there are many references to it in the mailing list archives. Is this
>> the same as "ST_Union()" <http://postgis.refractions.net/docs/
>> ch06.html#id2595344>?
>> I see a statement at the beginning of Chapter 6 that "PostGIS has
>> begun a transition from the existing naming convention to an SQL-MM-
>> centric convention. As a result, most of the functions that you know
>> and love have been renamed using the standard spatial type (ST)  
>> prefix."
>>  From this I can conclude that ST_Union() used to be Union(), and in
>> that section it says "NOTE: this is renamed from "union" because
>> union is an SQL reserved word" which implies that even from very
>> early on it was different than Union(), perhaps GeomUnion(). But if
>> this is the case, this name change should also be explicitly  
>> documented.
>> If there was a general renaming from Geom* to ST_*, that is also not
>> documented that I can find.
>> Confirmation requested, and if necessary documentation for all such
>> unusual name changes.
>> Thanks,
>> -- Andy
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>
> -- 
> Håvard Tveite
> Department of Mathematical Sciences and Technology, UMB
> Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY
> Phone: +47 64965483 Fax: +47 64965401 http://www.umb.no/imt/
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