Date archive for March, 2000
| March 25, 2000How to Select Ridgelines From a DEM Using Spatial AnalystSoftwareSelecting out ridgelines from a DEM using ArcView 3x’s Spatial Analyst extension is pretty straightforward. These steps assume the initial DEM is called “elev”. Time Required: 10 minutes Here’s How: Compute a flow direction grid – a grid with codes indicating for each cell which of the eight possible directions the flow would go in from ... read more March 10, 2000Open GISIssues in GISWhat is Open GIS? Open GIS is the full integration of geospatial data into mainstream information technology. What this means is that GIS users would be able to freely exchange data over a range of GIS software systems and networks without having to worry about format conversion or proprietary data types. In a true ‘open GIS’, agencies ... read more |
