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stacking/clipping raster data

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I was wondering if anyone knows how to "trim" one raster to another. I have a set of points, and I also have a rasterized elevation model. What I want to do is get an elevation for each of my points. I was told to first convert my points to grids (which I have done), then to "trim" (not sure what to call it) around all the overlaying points (which have now been converted to grids). After this, I can convert the elevation data to points, and join the two tables. Can anyone give me instructions on how to "trim" or "clip" data to only include overlapping raster cells in ArcGIS?

Martin Gamache

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The best and easiest way to do this with Spatial analyst is to use zonal statistics. You won't have to convert your points to rasters either, you just pass on the values of the underlying grid(s) to the point dataset. It is located in the spatial analyst toolbar under zonal statistics.

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