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Introducing Geographic Information Systems with ArcGIS: A Workbook Approach to Learning GIS, 3rd Edition by Michael D. Kennedy

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Getting More Information: Paths and Allocations

You have learned that you can calculate the shortest distance between two places by using the EucDistance request, and you can find the least-cost path with the CostDistance request, but there are still a couple of major questions: Which source cell is closest to (or least expensive to reach from) each cell in the raster, and what is the direction or path from each cell? That is, how would you identify the closest source cell and how to get there?

To answer these questions, first for straight-line distance, you can use two additional parameters in the Euclidean Distance tool.

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