\name{NodeVisStyle}
\alias{NodeVisStyle}
\alias{NodeVisStyle<-}
\title{
  Gets/sets the nodes visual appearence in Netica.
}
\description{
  Netica internally has a number of styles it can use to draw a node,
  thes including, "Default", "Absent", "Shape", "LabeledBox",
  "BeliefBars", "BeliefLine", and "Meter".  The function
  \code{NodeVisStyle()} returns how the node will be displayed, or
  sets how it will be displayed.
}
\usage{
NodeVisStyle(node)
NodeVisStyle(node) <- value
}
%- maybe also 'usage' for other objects documented here.
\arguments{
  \item{node}{
    A \code{\link{NeticaNode}} object whose style is to be determined.
  }
  \item{value}{
    A character string giving the new style.  Must be one of "Default",
    "Absent", "Shape", "LabeledBox", "BeliefBars", "BeliefLine", or
    "Meter". 
  }
}
\details{
  The visual style of the node doesn't make much different in RNetica,
  as R does not display the node.  However, it will control the
  appearence when the node is loaded into the Netica GUI.
}
\value{
  A character string which is one of the values "Default", "Absent",
  "Shape", "LabeledBox", "BeliefBars", "BeliefLine", or "Meter", or
  \code{NA} if an error occured.

  The setter method returns the modified \code{node} object.
}
\references{
\newcommand{\nref}{\href{http://norsys.com/onLineAPI/functions/#1.html}{#1()}}
  \url{http://norsys.com/onLineAPI/Manual/index.html}:
  \nref{GetNodeVisStyle_bn}, \nref{SetNodeVisStyle_bn}, 

}
\author{
  Russell Almond
}
\note{
  The Netica documentation indicates that in the future additionl
  parameters can be added to the style, for example:
  "LabeledBox,CornerRoundingRadius=3,LineThickness=2" 
}
\seealso{
  \code{\link{NeticaNode}}, \code{\link{NodeVisPos}()}
}
\examples{
snet <- CreateNetwork("StylishNet")

snode <- NewDiscreteNode(snet,"StyleMe")
stopifnot(NodeVisStyle(snode)=="Default")

NodeVisStyle(snode) <- "Meter"
stopifnot(NodeVisStyle(snode)=="Meter")

DeleteNetwork(snet)

}
\keyword{ interface }
\keyword{ attribute }% __ONLY ONE__ keyword per line