In the early 1980s the U. S. Army Corps of Engineers’ Construction Engineering Research Laboratory (USA/CERL) in Champaign, Illinois, began to explore the possibilities of … Read more
GRASS (Geographic Resources Analysis Support System) is a public domain raster based GIS, vector GIS, image processing system, and graphics production system. Created by the … Read more
There are many ways to describe a Geographic Information System. Here are three working definitions (from David A. Hastings, 1992, Geographic Information Systems: A Tool … Read more
This document describes how to acquire, install and configure a powerful scientific public-domain Geographic Information System (GIS): the Geographic Resources Analysis Support System (GRASS). It provides information on other resources for learning more about GRASS and GIS in general.