Importing DLG Data

To import spatial data in Digital Line Graph (DLG) format using the GIS Spatial Data Importing window, complete the following steps:

Select DLG from the Import Type drop-down menu.

The title of the filename field in the INPUT pane changes to Digital Line Graph filename.
Specify the path to the desired DLG file. Either enter the path in the filename field or click the arrow to display an Open window. Then select the file from that window. SAS/GIS software checks whether the DLG file type is Standard or Optional and processes the types accordingly.

SAS/GIS allocates the SAS fileref DLGIN to the import path that you specified in the filename field. If you allocate the fileref DLGIN to the desired file before beginning the import process, the filename and path appear in the filename field automatically.
Modify the destination information for the catalog and the spatial data sets, if needed.
Modify the default layers and composites, if needed. For more information, see the following:
- Defining Layers in Imported Data
- Defining Composites in Imported Data
No more than one layer of each type can be created from a DLG file. The fields for any layer types that cannot be created are dimmed.
Click Import to import the data. When the import process is complete, a message is displayed in the window message bar to indicate whether the import was successful. You can proceed with another import or close the window to display the newly imported map.