Creates a shadow band, with output 1 where pixels are illumunated and 0 where they are shadowed. Takes as input an elevation band, azimuth and zenith of the light source in degrees, a neighborhood size, and whether or not to apply hysteresis when a shadow appears. Currently, this algorithm only works for Mercator projections, in which light rays are parallel.
The image to which to apply the shadow algorithm, in whicheach pixel should represent an elevation in meters.
Azimuth in degrees.
Zenith in degrees.
|Integer, default: 0|
|Boolean, default: false|
Use hysteresis. Less physically accurate, but may generate better images.