Hi all,
are the OGRMulti{ LineString | Point | Polygon } geometries supported by
the ESRI Shapefile driver (in creation mode?); if so I am probably
missing something in they way they should be used.
I am asking this because when I try to write such features (i.e. an
OGRMultiPoint) to a shapefile I get a crash when calling the
addGeometry() method.
I was looking for a working example of OGRMulti* features creation, but
couldn't find one.
Example code:
const char *pszDriverName = "ESRI Shapefile";
OGRSFDriver *poDriver;
OGRRegisterAll();
poDriver =
OGRSFDriverRegistrar::GetRegistrar()->GetDriverByName( pszDriverName );
// ...
OGRDataSource *poDS;
poDS = poDriver->CreateDataSource( "multi_out.shp", NULL );
// ...
OGRLayer *poLayer;
poLayer = poDS->CreateLayer( "poly_out", NULL, wkbMultiPoint,
NULL );
// ...
OGRFeature *poFeature;
OGRGeometry * the_geom = NULL;
poFeature = OGRFeature::CreateFeature( poLayer->GetLayerDefn() );
OGRMultiPoint * dpoly = new OGRMultiPoint();
OGRPoint * point = new OGRPoint();
point->setX( 42.0 );
point->setY( 42.0 );
dpoly->addGeometryDirectly( point );
// delete point;
the_geom = dpoly;
poFeature->SetGeometry( the_geom );
delete the_geom;
if( poLayer->CreateFeature( poFeature ) != OGRERR_NONE )
{
printf( "Failed to create feature in shapefile.\n" );
exit( 1 );
}
OGRFeature::DestroyFeature( poFeature );
OGRDataSource::DestroyDataSource( poDS );
Thanks in advance!
Best Regards,
--
Andrea Battisti
Applied Coherent Technology Corp.
_______________________________________________
gdal-dev mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/gdal-dev
