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\name{shift}
\docType{methods}
\alias{shift}
\alias{shift,Raster-method}
\alias{shift,SpatialPolygons-method}
\alias{shift,SpatialLines-method}
\alias{shift,SpatialPoints-method}
\title{Shift}
\description{
Shift the location of a Raster* of vector type Spatial* object in the x and/or y direction
}
\usage{
\S4method{shift}{Raster}(x, dx=0, dy=0, filename='', ...)
\S4method{shift}{SpatialPolygons}(x, dx=0, dy=0, ...)
\S4method{shift}{SpatialLines}(x, dx=0, dy=0, ...)
\S4method{shift}{SpatialPoints}(x, dx=0, dy=0, ...)
}
\arguments{
\item{x}{Raster* or Spatial* object}
\item{dx}{numeric. The shift in horizontal direction}
\item{dy}{numeric. The shift in vertical direction}
\item{filename}{character file name (optional)}
\item{...}{if \code{x} is a Raster* object: additional arguments as for \code{\link{writeRaster}} }
}
\value{
Same object type as \code{x}
}
\seealso{ \code{\link{flip}}, \code{\link{rotate}}, and the elide function in the maptools package }
\examples{
r <- raster()
r <- shift(r, dx=1, dy=-1)
}
\keyword{spatial}
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