[postgis-users] functions st_covers, st_coveredby, st_simplifypreservetopology does not exist

Pena Kupen kupen at wippies.fi
Mon Aug 24 02:21:51 PDT 2009


Regina,

Thank's for your response. 
I checked file and they are not in transaction (as you told), so I can skip these erros.
It is not possible to us to upgrade geos yet - later this year.

--
pk

Paragon Corporation <lr at pcorp.us> kirjoitti: 
> Pk,
> 
> Sorry about that.  We don't have the comments.sql generation set to check
> the version of GEOS.  That is on my todo.  Though ideally I would just
> prefer that we make the required the minimum GEOS that can support all the
> functions we include in a release, if nothing more than to avoid this
> confusion.
> 
> You could just remark out those lines and it will work fine. Actually it
> should just skip over those errors anyway since they aren't in a
> transaction.  
> 
> The comments file just loads helper information about each function so that
> if you are browsing the functions via psql or PgAdmin III, you will see the
> brief summary about each function and what its for.
> 
> Now why those parts fail is because with GEOS 2.2.3 you don't get those
> functions.  Those functions were introduced in GEOS 3+
> 
> If you look at the docs for these you'll see GEOS >= 3...
> 
> http://postgis.refractions.net/documentation/manual-1.4.1SVN/ST_Covers.html
> 
> http://postgis.refractions.net/documentation/manual-1.4.1SVN/ST_CoveredByht
> ml
> 
> http://postgis.refractions.net/documentation/manual-1.4.1SVN/ST_SimplifyPres
> erveTopology.html
> 
> 
> If you can upgrade your GEOS,  I would highly suggest you do because there
> are a lot of improvements (and bug fixes) in GEOS 3.1 that you are missing
> with GEOS 2.2.3.
> 
> For example you won't be able to take benefit of the prepared geometry
> enhancements and there are some bug fixes in 3.0+ that were not back-ported
> to GEOS 2.2... I forget what those are exactly though.
> 
> Thanks,
> Regina
> 
> 
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Pena
> Kupen
> Sent: Monday, August 24, 2009 4:14 AM
> To: PostGIS Users Discussion
> Subject: Re: [postgis-users] functions st_covers, st_coveredby,
> st_simplifypreservetopology does not exist
> 
> Hi all,
> 
> My environment seems now be correct with Postgres 8.4, postgis 1.3.6 and
> geos 2.2.3.
> All script, except this postgis_comments.sql are loaded ok. I still got
> errors:
> 
> psql -f postgis_comments.sql -Upostgres -d mydb
> 
> psql:postgis_comments.sql:291: ERROR:  function st_covers(geometry,
> geometry) does not exist
> psql:postgis_comments.sql:293: ERROR:  function st_coveredby(geometry,
> geometry) does not exist
> psql:postgis_comments.sql:381: ERROR:  function
> st_simplifypreservetopology(geometry, double precision) does not exist
> 
> They are in comments which is not required, but I like to know, what am I
> missing?
> 
> btw: 
> I seems, that I cannot post reply to thread - why and how to do it?
> All of my reply's are new threads.
> 
> --
> pk
> 
> 
> --
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