Grand Portage NM DRGs in MrSID format (grpodrg.sid)
Budde P. 2001. Grand Portage NM DRGs in MrSID format (grpodrg.sid). National Park Service Midwest Region GIS Technical Support Center
Grpodrg.sid contains four compressed and appended UGSG DRGs for the area in and around Grand Portage NM. The compression ratio applied in the MrSID software was 10:1, no data values were changed to 128,128,128 for both the input no data and the output background. The data set has been projected to UTM Zone 16, nad83.
- Type
- Geospatial Dataset
- Authors
- Budde, Peter
- Date of Issue
- 2001-07-18
- Publisher
- National Park Service Midwest Region GIS Technical Support Center
- Units
- GRPO
- Keywords
- 7.5' quadrangles, DRG, Grand Portage NM, Minnesota, MrSID, Topographic maps