GRASS - A Useful Tool for the Mountain Cartographer
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Pat Dunlavey Cartographics
40 Oblong Road
Williamstown, MA 01267
GRASS GIS is a free open source GIS that runs on Unix operating systems, including Macintosh OS-X and Linux. It combines extensive raster GIS capabilities with some vector GIS capabilities. As a tool for the mountain cartographer it can replace numerous special-purpose utilities, with indexed, integer or floating point data able to be manipulated inside a georeferenced environment.
I will show how I used GRASS on Linux running on a PC to work with DEM and landcover data for a reference map of Alaska. DEM manipulations included: merging, resolution bumping, reprojecting, and relief shading. Landcover manipulations included reprojecting, merging, edge-growing and reclassification.