Creating raster and TIN from a terrain dataset
A terrain dataset can be converted to rasters or TINs using the geoprocessing tools from the 3D Analyst toolbar. Why would we need to convert terrain to raster or TIN?
Starting from large-scale source data, you might want to obtain derivative vector or raster surfaces for small-scale (for example
1:25,000) applications.You might need a raster surface to use statistical analysis tools from the Spatial Analyst extension.
You might want to refine and update the surface with new polygon or polyline features having a precision corresponding to the
1:3,000scale. You will need a TIN with a vertical accuracy corresponding to that scale.You might want to visualize your surfaces in ArcScene.
You might want to store the raster and TIN directly onto disk.
Getting ready
In this recipe, you will generate a raster and a TIN based on the DTM terrain surface created in the previous recipe.
You can start from your map document MyTerrain.mxd and skip step 1. Otherwise...
