Steps for reducing the size of the area modeled by clipping the contour line theme are described in the accompanying article, He gives additional instructions on how to produceĪ three-dimensional model by draping and modeling two-dimensional With the contour line theme, a triangulated irregular network (TIN) model can be built. Pentium-class PC with 64 MB RAM suggested.Ĭompute an attractive hillshaded map, and create a contour line theme. Using ArcView Spatial Analyst, the author tells how to output a grid theme that can be used to Perform two-dimensional and three-dimensional modeling in ArcView GIS with the ArcView Spatial Analyst and ArcView Editor's Note: This article describes how to use sample 1:24,000-scale 7.5' digital elevation model (DEM) data files to
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