Export of roads graph to GDF format

The given program is intended for export of the vector map containing the graph of roads to GDF format.

The program is a library Map2GDF.dll , which is accessed under the control of the GIS Panorama system, via the menu "File - Export to ... - Geographic Data Files (GDF)".

The operating procedure with the program:

1. To start the program, in the appeared dialog as initial data in a field «Source map» to choose the necessary map containing the graph of roads from the list.

2. To set a name of output map (by default a name of GDF map is the same, as well as at the source map).

By default the map is saved as GDF of specification 3.0. Difference GDF 3.0 from 4.0 consists in structure of an output file.

3. To press Execute button for starting process of formation of GDF file.

During the loading process, information is provided about the total number of objects, about successfully and unsuccessfully created objects, and the number of uncustomized codes.

Indispensable condition of building a graph of roads is the presence on the map of the objects the network Edge (Arc), the network Node.