Missing data (\code{NA}) are coded and treated in R's usual way.
}
\value{
- an object of class \link[stats]{"dist"}. If \code{variance = TRUE} an
+ an object of class \code{dist}. If \code{variance = TRUE} an
attribute called \code{"variance"} is given to the returned object.
}
\author{Emmanuel Paradis \email{Emmanuel.Paradis@mpl.ird.fr}}