Selon Martin Landa <[email protected]>: > Hi, > > I wonder how to get information about connection between geometry and > attributes when OGRLayer::GetFIDColumn() returns "". For the > shapefiles I have tested GetFIDColumn() returned always "". How to > link attributes if this information is missing?
Martin, I'm not sure to understand what you mean with "connection between geometry and attributes". The OGRFeature concept is precisely containing both, so you don't need to do anything special. For shapefiles, it is expected that GetFIDColumn() returns "", as the FID for a shape feature is just a sequence number incremented each time the driver reads a new "row" in the .shp and the .dbf files. OGR uses no column in the .dbf to get the FID. You'll probably also find here answers to your questions about the GetFIDColumn() method : http://trac.osgeo.org/gdal/ticket/2694 Best regards, Even _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
