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<div class="moz-cite-prefix">Hello,<br>
<br>
Is st_geometryN(r.geomp,1) a valid geometry ?<br>
<br>
<br>
<br>
Ludovic Granjon a écrit :<br>
</div>
<blockquote cite="mid:52D655D5.4010503@u-bourgogne.fr" type="cite">
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<div class="moz-cite-prefix">Hello (Bonjour Christophe)<br>
<br>
I don't use french cadastre, only specific archaelogical data.<br>
<br>
Thanks for this, I try but, I don't realy understand how worked
topogeo_addpolygon.<br>
If I do :<br>
<br>
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</style>CREATE EXTENSION postgis;<br>
CREATE EXTENSION postgis_topology;<br>
SET search_path = topology,public;<br>
<br>
I import my layer with QGIS<br>
<br>
SELECT topology.CreateTopology('ec_topo', 27572);<br>
SELECT
topology.AddTopoGeometryColumn('ec_topo','public','ec','topo_geom','POLYGON');<br>
<br>
DO $$DECLARE r record;<br>
BEGIN<br>
FOR r IN SELECT * FROM ec LOOP<br>
BEGIN<br>
SELECT
topology.TopoGeo_AddPolygon('ec_topo',st_geometryn(r.geom,1),1);<br>
EXCEPTION<br>
WHEN OTHERS THEN<br>
RAISE WARNING 'Loading of record % failed: %', r.id,
SQLERRM;<br>
END;<br>
END LOOP;<br>
END$$;<br>
<br>
I have :<br>
ATTENTION: Loading of record 1 failed: la requête n'a pas de
destination pour les données résultantes<br>
<br>
I don't know where I'm wrong<br>
<br>
If you have an idea<br>
<br>
Thanks<br>
<br>
Regards<br>
<br>
Ludovic<br>
<br>
PS : (si j'avais sur que c'était toi qui répondrait, j'aurai
écrit sur nos forums francophone ;-) )<br>
<br>
Le 15/01/2014 08:25, Christophe Vergon a écrit :<br>
</div>
<blockquote cite="mid:52D63801.8090006@orange.fr" type="cite">Hello,
(bonjour) <br>
<br>
When you udpdate a topology by using a SET statement if a
polygon intersect an other you will have this error. <br>
If you want to create a topology from polygons try to use the
topogeo_addpolygon function, the intersection between two
polygons will be a new face. <br>
<br>
If, as I mean, you use a french survey "cadastre" data set, it's
the best way to do that. <br>
<br>
<br>
<br>
Ludovic Granjon a écrit : <br>
<blockquote type="cite">Hi all <br>
<br>
I try to import a polygon layer to postgis and build topology
with tolerance. <br>
I try something like that <br>
<br>
SELECT CreateTopology('ec_topo2', 27572); <br>
SELECT AddTopoGeometryColumn('ec_topo2', 'public', 'ec',
'topogeom2', 'MULTIPOLYGON'); <br>
UPDATE ec SET topogeom2 = toTopoGeom(geom, 'ec_topo', 1, 1.0);
<br>
<br>
But when I do that, I have <br>
<br>
********** Erreur ********** <br>
<br>
ERREUR: Spatial exception - geometry intersects edge 262 <br>
État SQL :P0001 <br>
Contexte : fonction PL/pgsql « topogeo_addlinestring », ligne
124 à affectation <br>
SQL statement "SELECT array_cat(edges, array_agg(x)) FROM (
select topology.TopoGeo_addLinestring(atopology, rec.geom,
tol) as x ) as foo" <br>
fonction PL/pgsql « topogeo_addpolygon », ligne 24 à
affectation <br>
fonction PL/pgsql « totopogeom », ligne 112 à FOR sur des
lignes de SELECT <br>
fonction PL/pgsql « totopogeom », ligne 94 à affectation <br>
<br>
I try to modify the tolerance parameter but it still doesn't
work <br>
<br>
Have you a solution for that ? <br>
<br>
Thanks a lot <br>
<br>
Regards <br>
<br>
Ludovic <br>
<br>
<br>
<br>
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