USGS GTOPO30 (*.hdr;*.dem)
This is a binary format file containing point height readings at 30 arc second intervals (approx 1000m).
The expected file extension of this data is *.HDR and *.DEM.
Compatibility:
- Cadcorp SIS Desktop
- Cadcorp SIS Desktop Express
- Cadcorp SIS ActiveX Modeller
- Cadcorp SIS ActiveX Manager
- Cadcorp SIS ActiveX Viewer
- Cadcorp GeognoSIS