OGR DWG support is based on libopencad, so the list of supported DWG (DXF) versions can be seen in libopencad documentation. All drawing entities are separated into layers as they are in DWG file, not in 1 layer as DXF Driver does.

DWG files are considered to have no georeferencing information through OGR. Features will all have the following generic attributes:

Supported Elements

The following element types are supported:

The driver is read-only.

See also: