péntek 28 március 2008 14.13 dátummal Obe, Regina
[EMAIL PROTECTED] ezt írta:
Probably because its been more or less deprecated.
For newer versions of PostGIS use ST_Union instead of geomunion.
When I was looking for a corresponsive function I saw the
ST_Union(geometry,geometry) and
On Sunday 30 March 2008 19:46:31 Paul Tomblin wrote:
What documentation? In http://postgis.refractions.net/docs/ch06.html, all
I can find is ST_xmin(box3d). But experimentation shows I can call
'xmin()' with a geometry, and 'st_xmin()' doesn't exist.
This is what I find so frustrating
On Wednesday 26 March 2008 09:15:59 [EMAIL PROTECTED] wrote:
I'm trying to convert SHPs to postGIS tables, but I encountered two kind of
problems regarding to invalid DBF.
The first SHP shows weird ASCII characters when I tried to convert it, and
the process failed with the following error
Mark Cave-Ayland wrote:
On Sunday 30 March 2008 19:46:31 Paul Tomblin wrote:
to use some of them, you actually have to leave off the ST_ part. This
function is defined as requiring a box3d, but nothing I can find in the
docs actually comes out and says that if you have a method that takes a
Lee Hachadoorian wrote:
I'm looking through the PostGIS reference, and I can't seem to find a
way to take a geometry of polygons and turn it into lines. What I'm
looking for is something like the ArcGIS Feature to Line geoprocessor,
which will create a line shapefile where each feature is
I would suggest what is needed here is the Hausdorff distance metric.
It gives a measure of how far apart geometries are, not how close
together they are. I've used this successfully in JCS to implement
exactly the kind of approximate LineSegment dissolver that this post
is talking about.
Ok thanks for your help with this Brent.
There is no aspatial data of importance associated with the lines.
It is extremely rare that there will be three equivalent lines as you
describe. Basically I have doubly defined polygon edges (resulting from
an alpha-shapes cgal routine) that need to
Hello everyone,
Im quite a novice in the Open GIS world, and i would like to know if
theres any client out there that connects to PostGIS and has a
Autocomplete polygon tool (like in arcGis).
Thanks for your time
Att.
George Silva
___
For those of you who have been waiting, the Census bureau finally released
the new TIGER/Line shapefiles.
The information page and download links are here:
http://www.census.gov/geo/www/tiger/tgrshp2007/tgrshp2007.html
This download page is more wget-friendly:
Good people;
I have this odd problem that I hope others may clarify for me.
I have a big ArcInfo polygon coverage produced by a sequence of spatial
unions. One of the component polygon coverages was brutalized somewhere
along the way and it has some polygons with triangular and bow-tie
Dan,
* Dan Putler ([EMAIL PROTECTED]) wrote:
Unfortunately, the data isn't what one would hope for. It appears that
the 2007 release will not include address range or zip code information,
but later releases (2008?) will. Here is the link to the right point in
the FAQ:
* Dan Putler ([EMAIL PROTECTED]) wrote:
True to an extent. However, I've pulled up fe_2007_06085_addr.dbf (Santa
Clara County, California), and have discovered that one TLID 123180546
has 1246 different right side address records, while TLID 122928561 has
88 right side address records.
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