sinkfill {topmodel} | R Documentation |
Removes sinks in a digital elevation model by filling depressions
sinkfill(DEM,res,degree)
DEM |
A matrix representing a digital elevation model [m] with equally sized pixels and equal x and y resolution |
res |
Resolution of the digital elevation model [m] |
degree |
Minimum slope to be kept between cells when filling [degrees] |
For deep sinks or large maps, it may be possible that not all sinks are filled in one run. Then the function should be applied repeatedly over the same object.
A matrix of the same size as the DEM.
Wouter Buytaert, Imperial College London, based on an implementation from the Hydrology Group of Lancaster University
See http://paramo.cc.ic.ac.uk/topmodel_tutorial for examples.
topmodel, topidx
data(huagrahuma.dem) filled.dem <- sinkfill(huagrahuma.dem, 25, 0.1)