xrspatial.viewshed.viewshed¶
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xrspatial.viewshed.viewshed(raster: xarray.core.dataarray.DataArray, x: Union[int, float], y: Union[int, float], observer_elev: float = 0, target_elev: float = 0) → xarray.core.dataarray.DataArray[source]¶ Calculate viewshed of a raster (the visible cells in the raster) for the given viewpoint (observer) location.
- raster: xarray.DataArray
Input raster image.
- x: int, float
x-coordinate in data space of observer location.
- y: int, float
y-coordinate in data space of observer location.
- observer_elev: float
Observer elevation above the terrain.
- target_elev: float
Target elevation offset above the terrain.
- viewshed: xarray.DataArray
A cell x in the visibility grid is recorded as follows: - If it is invisible, then x is set to INVISIBLE. - If it is visible, then x is set to the vertical angle w.r.t the viewpoint.