March, 2000


GIS Software

How to Select Ridgelines From a DEM Using Spatial Analyst

How to Select Ridgelines From a DEM Using Spatial Analyst

Selecting 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 […]