[mapserver-users] Shapezip 3D

[Guillaume Sueur]

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
>