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-rw-r--r--R/estpoly.R3
-rw-r--r--man/arx.Rd6
2 files changed, 8 insertions, 1 deletions
diff --git a/R/estpoly.R b/R/estpoly.R
index d99c64e..c15dc80 100644
--- a/R/estpoly.R
+++ b/R/estpoly.R
@@ -121,6 +121,9 @@ residplot <- function(model,newdata=NULL){
#' @param lambda Regularization parameter(Default=\code{0.1})
#' @param intNoise Logical variable indicating whether to add integrators in
#' the noise channel (Default=\code{FALSE})
+#' @param fixed list containing fixed parameters. If supplied, only \code{NA} entries
+#' will be varied. Specified as a list of two vectors, each containing the parameters
+#' of polynomials A and B respectively.
#'
#' @details
#' SISO ARX models are of the form
diff --git a/man/arx.Rd b/man/arx.Rd
index 1b121c1..c47b1e0 100644
--- a/man/arx.Rd
+++ b/man/arx.Rd
@@ -4,7 +4,7 @@
\alias{arx}
\title{Estimate ARX Models}
\usage{
-arx(x, order = c(1, 1, 1), lambda = 0.1, intNoise = FALSE)
+arx(x, order = c(1, 1, 1), lambda = 0.1, intNoise = FALSE, fixed = NULL)
}
\arguments{
\item{x}{an object of class \code{idframe}}
@@ -17,6 +17,10 @@ the input-output delay}
\item{intNoise}{Logical variable indicating whether to add integrators in
the noise channel (Default=\code{FALSE})}
+
+\item{fixed}{list containing fixed parameters. If supplied, only \code{NA} entries
+will be varied. Specified as a list of two vectors, each containing the parameters
+of polynomials A and B respectively.}
}
\value{
An object of class \code{estpoly} containing the following elements: