Hi Eli, Does -tz 10.0 in effect raise your DEM target elevation by 10 units? >
> Was the observer height of -oz 21.6 the same for all three as well? > I'm using -oz 21.6 to put my observer at 21.6 meters above the DEM (it is a watch-tower); -tz10.0 to put the target at 10 meters above the DEM (representing a smoke plume). Or am I misunderstanding the documentation of gdal_viewshed? -oz <value> The height of the observer above the DEM surface in the height unit of the DEM. Default: 2 -tz <value> The height of the target above the DEM surface in the height unit of the DEM. Default: 0 Thanks Eli! Best regards, Pedro
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