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\name{Extent math}
\alias{floor,Extent-method}
\alias{ceiling,Extent-method}
\title{round Extent coordinates}
\description{
use \code{round(x, digits=0)} to round the coordinates of an Extent object to the number of digits specified. This can be useful when dealing with a small imprecision in the data (e.g. 179.9999 instead of 180). \code{floor} and \code{ceiling} move the coordiantes to the outer or inner whole integer numbers.
It is also possible to use Arithmetic functions with Extent objects (but these work perhaps unexpectedly!)
See \code{\link[raster]{Math-methods}} for these (and many more) methods with Raster* objects.
}
\usage{
\S4method{floor}{Extent}(x)
\S4method{ceiling}{Extent}(x)
}
\arguments{
\item{x}{Extent object }
}
\seealso{\code{\link[raster]{Math-methods}}}
\examples{
e <- extent(c(0.999999, 10.000011, -60.4, 60))
round(e)
ceiling(e)
floor(e)
}
\keyword{ spatial }
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