Hi Even,
Thanks for your reply even if it is disappointing. So I guess all the
http://mapserver.org/fr/output/ogr_output.html stuff about 2.5D/3D is
just rubbish and the USE_POINT_Z_M compile option is useless.
Thanks for your investigations
Best regards
Guillaume
Le 01/03/2014 12:53, Even Rouault a écrit :
Le vendredi 28 février 2014 17:29:15, Guillaume Sueur a écrit :
Hi list,
I'm trying to generate a 3D shapefile with OGR SHAPEZIP format. I'm
using MapServer 6.5 compiled with USE_POINT_Z_M options.
mapserv -v gives :
MapServer version 6.5-dev OUTPUT=PNG OUTPUT=JPEG SUPPORTS=PROJ
SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO SUPPORTS=ICONV
SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER
SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER
SUPPORTS=GEOS SUPPORTS=POINT_Z_M INPUT=JPEG INPUT=POSTGIS INPUT=OGR
INPUT=GDAL INPUT=SHAPEFILE
My data are stored in Postgis 2.1. They are 3D. I've added the
"ows_geomtype" "MultiPolygon25D" metadata to my layer.
What I get is a 3D shapefile, but all the Z values are set to 0.
Lookking at the request made by MapServer to Postgis, I see the geom is
requested with Force2D function :
encode(ST_AsBinary(ST_Force2D("the_geom"),'NDR'),'hex') as geom
Is this a bug or is there some more settings I didn't set properly ?
Guillaume,
there's no support yet for parsing 3D geometries in mappostgis.c (mentionned
in comments of https://github.com/mapserver/mapserver/pull/4803 ). I wouldn't
expect adding support for it to be that difficult.
As a workaround, I would have suggested that you could use the OGR PostgreSQL
driver, but looking at mapogr.cpp, I also see that the Z support of OGR isn't
used. Grrrr....
Even
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