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\name{mkinpredict}
\alias{mkinpredict}
\title{
Produce predictions from a kinetic model using specifc parameters
}
\description{
This function produces a time series for all the observed variables in a kinetic model
as specified by \code{\link{mkinmod}}, using a specific set of kinetic parameters and
initial values for the state variables.
}
\usage{
mkinpredict(mkinmod, odeparms, odeini, outtimes, solution_type = "deSolve",
map_output = TRUE, atol = 1e-08, rtol = 1e-10, ...)
}
\arguments{
\item{mkinmod}{
A kinetic model as produced by \code{\link{mkinmod}}.
}
\item{odeparms}{
A numeric vector specifying the parameters used in the kinetic model, which is generally
defined as a set of ordinary differential equations.
}
\item{odeini}{
A numeric vectory containing the initial values of the state variables of the model. Note
that the state variables can differ from the observed variables, for example in the case
of the SFORB model.
}
\item{outtimes}{
A numeric vector specifying the time points for which model predictions should be
generated.
}
\item{solution_type}{
The method that should be used for producing the predictions. This should
generally be "analytical" if there is only one observed variable, and usually
"deSolve" in the case of several observed variables. The third possibility "eigen"
is faster but produces results that the author believes to be less accurate.
}
\item{map_output}{
Boolean to specify if the output should list values for the observed variables (default)
or for all state variables (if set to FALSE).
}
\item{atol}{
Absolute error tolerance, passed to \code{\link{ode}}. Default is 1e-8,
lower than in \code{\link{lsoda}}.
}
\item{rtol}{
Absolute error tolerance, passed to \code{\link{ode}}. Default is 1e-10,
much lower than in \code{\link{lsoda}}.
}
\item{\dots}{
Further arguments passed to the ode solver in case such a solver is used.
}
}
\value{
A matrix in the same format as the output of \code{\link{ode}}.
}
\author{
Johannes Ranke
}
\examples{
SFO <- mkinmod(degradinol = list(type = "SFO"))
mkinpredict(SFO, c(k_degradinol_sink = 0.3), c(degradinol = 100), 0:20,
solution_type = "analytical")
mkinpredict(SFO, c(k_degradinol_sink = 0.3), c(degradinol = 100), 0:20,
solution_type = "eigen")
mkinpredict(SFO, c(k_degradinol_sink = 0.3), c(degradinol = 100), 1:20,
solution_type = "analytical")[20,]
mkinpredict(SFO, c(k_degradinol_sink = 0.3), c(degradinol = 100), 0:20,
atol = 1e-20)[20,]
# The integration method does not make a lot of difference
mkinpredict(SFO, c(k_degradinol_sink = 0.3), c(degradinol = 100), 0:20, atol = 1e-20,
method = "ode45")[20,]
mkinpredict(SFO, c(k_degradinol_sink = 0.3), c(degradinol = 100), 0:20, atol = 1e-20,
method = "rk4")[20,]
# The number of output times used to make a lot of difference until the
# default for atol was adjusted
mkinpredict(SFO, c(k_degradinol_sink = 0.3), c(degradinol = 100),
seq(0, 20, by = 0.1))[201,]
mkinpredict(SFO, c(k_degradinol_sink = 0.3), c(degradinol = 100),
seq(0, 20, by = 0.01))[2001,]
}
\keyword{ manip }
|
