To be sure, we understand each others, here is the few lines of SQL I am
using:
https://github.com/3nids/qWat/blob/7bc65b5a43ffb9ae5947ede683ff1f2274807972/sql/topology.sql
I know I have errors in topology in my pipes. So, is this correct than I
can use toTopoGeom for geometries that have incorrect topology?
Or should I check them first?
Here is the result of validate topology when a part of my pipes is in
the topology column:
SELECT topology.ValidateTopology('distrib_topo');
validatetopology
---------------------------
("face without edges",0,)
(1 row)
I can dump the db, this will be a few megas, but I would like to be sure
I am not doing anything stupid, first....
On 02/24/2012 12:35 PM, Sandro Santilli wrote:
On Fri, Feb 24, 2012 at 12:03:10PM +0100, Denis Rouzaud wrote:
Okay,
So I am looping over my 25000 pipes and soon as there is a topology
error, the
UPDATE distribution.pipes SET topogeom = toTopoGeom(wkb_geometry,
''distrib_topo'', layer) WHERE id = pi.id;
throws an error:
ERROR: SQL/MM Spatial exception - point not on edge
Excellent. So a _single_ geometry is enough to reproduce the error.
Save both the new geometry (WHERE id = pi.id) and the topology
status (dump the schema).
If you can, attach the dump and the new input into a ticket.
May be worth checking the topology built so far for correctness
with ValidateTopology. Any invalidity would be a bug in PostGIS.
But not all invalidities are cought by ValidateTopology so there
may be a need to do more eyebased checking (linking isn't checked).
Usually the invalidity, if any, is within the bounding box
of the geometry that fails being installed.
I would like to list all the errors by raising the ids, what is the
exception to catch?
A loop _outside_ the database wouldn't need to catch.
If you're looping inside, with pl/pgsql, catch OTHERS.
--strk;
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