Christoph Dohmen <ChDohmen <at> gmx.de> writes:
> Thanks to Ralf and Frederik! > > But now I want to group those data together. > Well, I want to create a shapefile containing all road-objects. > This is quite easy using ogr2ogr select everything with a value > for highway-attribute. Doing the same for rivers is also done > in no time. BUT, I want to create an attribute containing the > attribute value like 'object_id'. This should be set to the value > of highway-atrtibute in case of generating the road-file and it > should be set to the value of the waterway-attribute in case of > generating the river-file. > > Can anyone give me a hint? This is a question of how to make a proper SQL query. I am not good in those but try something like: SELECT roads.*, 'road_id' as object_id FROM your_roads_table roads; It should select everything from the table "your_roads_table" and add an extra column titled as "object_id" and feel in value "road_id" for each line. Is that what you would like to have? -Jukka Rahkonen- > > Christoph _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev