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List:       postgis-users
Subject:    Re: [postgis-users] Splitting a polygon.
From:       Kevin Neufeld <kneufeld () refractions ! net>
Date:       2010-01-25 16:03:17
Message-ID: 4B5DC0C5.7020405 () refractions ! net
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No problem at all.  By the way, great job with how you asked for help.  You had a \
clear example script and stated the  results and what you expected to see.  It made \
debugging the problem scenario a whole lot simpler.  Kudos!

Cheers,
Kevin

On 1/25/2010 6:53 AM, Paul Moen wrote:
> Thanks. I stared at that for so long I couldn't see the answer.
> 
> On Jan 25, 2010, at 12:21 AM, Kevin Neufeld wrote:
> 
> > No, not a bug.  It looks like you have a gap in your split line of 10^-5, which \
> > obviously disappears when you reduce the precision. 
> > At coordinates
> > (1972865.08581219 378326.311285453)
> > (1972865.08581219 378326.311279507)
> > 
> > Cheers,
> > Kevin
> > 
> > On 1/24/2010 5:19 PM, Paul moen wrote:
> > > I made a much more simplified version of what I am trying to do.  I am using \
> > > PostgreSQL 8.4.2 and POSTGIS="1.4.1" GEOS="3.2.0-CAPI-1.6.0" PROJ="Rel. 4.7.1, \
> > > 23 September 2009" 
> > > I create the table testlines as follows
> > > 
> > > CREATE TABLE testlines
> > > (
> > > gid integer,
> > > the_geom geometry
> > > )
> > > WITH (OIDS=TRUE);
> > > ALTER TABLE testlines OWNER TO postgres;
> > > INSERT INTO testlines(gid, the_geom) VALUES (1, \
> > > st_geomfromtext('LINESTRING(1972865.08581219 378326.311285453,1975599.79273051 \
> > > 379853.261981628)',-1)); INSERT INTO testlines(gid, the_geom) VALUES (2, \
> > > st_geomfromtext('LINESTRING(1972773.34674946 377707.210612508,1972913.11215175 \
> > > 377573.688032513)',-1)); INSERT INTO testlines(gid, the_geom) VALUES (3, \
> > > st_geomfromtext('LINESTRING(1972765.56033513 378288.726667813,1972865.08581219 \
> > > 378326.311279507)',-1)); INSERT INTO testlines(gid, the_geom) VALUES (4, \
> > > st_geomfromtext('LINESTRING(1972865.08581219 378326.311279507,1972817.2530921 \
> > >                 378237.264198899)',-1));
> > > ...
> > > Is this a bug?
> > > 
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> 
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