Hi, I'm relatively new to GIS and I'm attempting to calculate the slope from a DEM raster of the Adirondack Park. <Spatial_Reference>NAD_1983_UTM_Zone_18N <Linear_Unit>Meter (1.000000)</Linear_Unit> <Angular_Unit>Degree (0.017453292519943295) I'm having trouble understanding how to determine if I need to change the z-factor from the default "1" and then which z-factor to use if one is needed. Can anyone lend a hand?
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