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\name{epi.convgrid}
\alias{epi.convgrid}
\title{Convert British National Grid georeferences to easting and northing coordinates}
\description{
Convert British National Grid georeferences to Brtish National Grid (EPSG 27700) easting and northing coordinates.
}
\usage{
epi.convgrid(osref)
}
\arguments{
\item{osref}{a vector of character strings listing the British National Grid georeferences to be converted.}
}
\note{
If an invalid georeference is encountered in the vector \code{os.ref} the method returns a \code{NA}.
}
\examples{
## EXAMPLE 1:
os.ref <- c("SJ505585","SJ488573","SJ652636")
epi.convgrid(os.ref)
os.ref <- c("SJ505585","SJ488573","ZZ123456")
epi.convgrid(os.ref)
}
\keyword{univar}% at least one, from doc/KEYWORDS
\keyword{univar}% __ONLY ONE__ keyword per line
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