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I want to create a basic DEM file in .ascii format which will just be a rectangular grid and with no slope i.e same elevation at every cell. Please provide information on how to achieve this. I am using ArcGIS 9.3. Thanks.

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2 Answers 2

An easy approach would be to create a polygon of your study area, and give that feature the hight that you want as an attribute.

After that use the Polygon to raster tool to create a raster file, with your hight as the cell value for all cells. After this, use the Raster to Ascii tool to convert the raster to ASCII format.

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Use the Create Constant Raster tool.

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