mark909

Creating a surface "cap" over DEM

Discussion created by mark909 on Jan 17, 2014
Latest reply on Jan 17, 2014 by mark909
I'm looking into creating a layer showing the depth of material lost from a DEM.

What I want to do is create a "cap" over the DEM. Imagine a flat surface over the DEM before any erosion occured.

Now I can extract elevation values by converting a boundary to points and extracting elevation values.

What I am wondering is what is the best way to extract the highest values at equal intervals across a DEM.

Say I'd like to extract the hightest point from every 50m area of DEM and have this converted to a point showing the location.

I could then create a TIN from these highest location points to give an approximate estimation of the DEM surface before erosion occured.

Does anyone know the best way to go about this or have alternative suggestions on how to do this?

Thanks for any help! :)

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