I am trying to read DLG files I acquired from EDC:
http://edcftp.cr.usgs.gov/pub/data/DLG/LARGE_SCALE/B/bar_harbor_ME/
I created a new location with datum nad27, UTM 19T, and the following boundary
information:
North Edge: 4927711.3427
South Edge: 4913925.56721
West Edge: 559671.376533
East Edge: 569757.204349
I then imported one of the TR01CATD.DDF files using v.in.ogr:
v.in.ogr dsn=/home/models/grassdata/USGS/BarHarbor/RD/TR01CATD.DDF output=BHroads min_area=0.0001 snap=-1
The file was imported, however I got several warnings, informing me that the feature was imported
without the geometry, and when I attempt to view the file I get a white screen with no features, such
as roads. I also get a message saying the topology is not available. The output from the import is listed
below:
A datum name nad27 (North_American_Datum_1927) was specified without transformation parameters.
Non-interactive mode: the GRASS default for nad27 is towgs84=-22.000,157.000,176.000.
Projection of input dataset and current location appear to match.
Proceeding with import...
Layer: ARDF
Importing map 906 features...
906 features without geometry
Layer: ARDM
Importing map 113 features...
113 features without geometry
Layer: ACOI
Width for column 'COINCIDENT' set to 255 (was not specified by OGR), some strings may be truncated!
Importing map 1 features...
1 feature without geometry
Layer: AHDR
Importing map 1 features...
1 feature without geometry
Layer: NP01