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I was wondering if there is a way to change the elevation units of a Terrain dataset (from example from meter to feet)?

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    Not that I know of. In tools like Contour_3d you can set the Z factor (multiple) to convert metres to feet or feet to metres. A terrain takes on the spatial reference of the dataset that it resides in, so if the Z units of the dataset are metres (default) then the terrain will be in metres, if it's feet then the terrain units will be in feet. – Michael Stimson Apr 28 '15 at 21:23
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I am not sure if this would apply, but instead of changing the values, could you just change the display.

See if this will help you...check Ryan K's answer. Setting default units for Shape_Area to be Acres using ArcGIS Desktop

  • Thanks for the thought, but I think that does not work for me. I am trying to intersect the topo with some water surface elevation TINs (created from water surface elevation values on riverine cross sections) that are in feet. I could change the water surface elevation values on the cross sections to meter as a workaround though. – Arash May 22 '15 at 22:58

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