\name{deleteNodeAttribute}

\alias{deleteNodeAttribute}
\alias{deleteNodeAttribute,CytoscapeConnectionClass-method}

\title{deleteNodeAttribute}
\description{
Node and node attributes are usually added to a Cytoscape network by
defining them on the graph used to construct a CytoscapeWindow.
Once Cytoscape has been passed an attribute, however, it persists
until you exit the application or delete it -- using the Cytoscape
graphical user interface, or by calling this method.
}
\usage{
deleteNodeAttribute(obj, attribute.name)
}
\arguments{
  \item{obj}{a \code{CytoscapeConnectionClass} object or CytoscapeWindow
    object. }
  \item{attribute.name}{a \code{character string}, the name of the
    attribute you wish to delete.}
}

\value{
nothing
}
\author{Paul Shannon}

\seealso{
  getNodeAttributeNames
  addNodeAttribute
}



\examples{

  window.name = 'demo.deleteNodeAttribute'
  cw = new.CytoscapeWindow (window.name, graph=makeSimpleGraph ())
  displayGraph (cw)
  redraw (cw)
  layoutNetwork(cw)

  print (paste ("before: ", getNodeAttributeNames (cw)))
  deleteNodeAttribute (cw, 'count')
  print (paste ("after: ", getNodeAttributeNames (cw)))

}

\keyword{graph}