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\docType{methods}
\name{watershed}
\alias{watershed}
\alias{watershed,SpatRaster-method}
\title{Catchment delineation}
\description{
delineate the area covered by a catchment from a SpatRaster with flow direction and a pour-point (catchment outlet).
}
\usage{
\S4method{watershed}{SpatRaster}(x, pourpoint, filename="",...)
}
\arguments{
\item{x}{SpatRaster with flow direction. See \code{\link{terrain}}. }
\item{pourpoint}{matrix or SpatVector with the pour point location}
\item{filename}{character. Output filename}
\item{...}{additional arguments for writing files as in \code{\link{writeRaster}}}
}
\value{
SpatRaster
}
\author{
Ezio Crestaz, Emanuele Cordano, Roman Seliger
}
\examples{
elev <- rast(system.file('ex/elev_vinschgau.tif', package="terra"))
flowdir <- terrain(elev, "flowdir")
## pour point at Naturns
pp <- cbind(653358.3, 5168222)
w <- watershed(flowdir, pp)
}
\keyword{spatial}
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