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how to measure canopy height from a DSM raster minus DEM raster?

TedRakel

I have a client who has LiDAR data for high voltage transmission lines. They want to be able to calculate the canopy height in areas near the transmission towers. I followed the link here: ArcGIS Help 10.1 to generate rasters of the DSM and DEM from the LiDAR data. I used the GP minus tool to subtract the DEM raster from the DSM raster. Now I'm wondering how to find the canopy height from this. Should I use the 'Profile Graph' tool on the '3D Analyst' toolbar? It seems that the 'Point profile' tool would work a lot better, but it isn't enabled.

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