TransfoParam_GR4J.Rd

\encoding{UTF-8}


\name{TransfoParam_GR4J}
\alias{TransfoParam_GR4J}


\title{Transformation of the parameters of the GR4J model}


\usage{
TransfoParam_GR4J(ParamIn, Direction)
}


\arguments{
\item{ParamIn}{[numeric] matrix of parameter sets (sets in line, parameter values in column)}

\item{Direction}{[character] direction of the transformation: use \code{"RT"} for Raw -> Transformed and \code{"TR"} for Transformed -> Raw}
}


\value{
\emph{ParamOut} [numeric] matrix of parameter sets (sets in line, parameter values in column)
}


\description{
Function which transforms model parameters of the GR4J model (from real to transformed parameters and vice versa).
}


\examples{
library(airGR)

## transformation Raw -> Transformed for the GR4J model
Xraw  <- matrix(c(+221.41, -3.63,  +30.00, +1.37,
                  +347.23, -1.03,  +60.34, +1.76,
                  +854.06, -0.10, +148.41, +2.34),
                  ncol = 4, byrow = TRUE)
Xtran <- TransfoParam_GR4J(ParamIn = Xraw , Direction = "RT")

## transformation Transformed -> Raw for the GR4J model
Xtran <- matrix(c(+3.60, -2.00, +3.40, -9.10,
                  +3.90, -0.90, +4.10, -8.70,
                  +4.50, -0.10, +5.00, -8.10),
                  ncol = 4, byrow = TRUE)
Xraw  <- TransfoParam_GR4J(ParamIn = Xtran, Direction = "TR")
}


\author{
Laurent Coron
}


\seealso{
\code{\link{TransfoParam}}, \code{\link{TransfoParam_GR5J}}, \code{\link{TransfoParam_GR6J}}, \code{\link{TransfoParam_CemaNeige}}
}