1\name{xmlSize}
2\alias{xmlSize}
3\alias{xmlSize.default}
4\alias{xmlSize.XMLDocument}
5\alias{xmlSize.XMLNode}
6\title{The number of sub-elements within an XML node.}
7\description{
8  XML elements can contain other, nested sub-elements.
9 This generic function determines the number of
10such elements within a specified node.
11It applies to an object of class XMLNode or XMLDocument.
12}
13\usage{
14xmlSize(obj)
15}
16\arguments{
17  \item{obj}{ An an object of class XMLNode
18or XMLDocument.}
19}
20\value{
21 an integer which is the \code{\link{length}}
22 of the value from \code{\link{xmlChildren}}.
23}
24\references{\url{http://www.w3.org/XML}, \url{http://www.jclark.com/xml},
25\url{http://www.omegahat.net}  }
26\author{ Duncan Temple Lang }
27
28\seealso{
29\code{\link{xmlChildren}},
30\code{\link{xmlAttrs}},
31\code{\link{xmlName}},
32\code{\link{xmlTreeParse}}
33}
34
35\examples{
36  fileName <- system.file("exampleData", "mtcars.xml", package="XML")
37  doc <- xmlTreeParse(fileName)
38  xmlSize(doc)
39  xmlSize(doc$doc$children[["dataset"]][["variables"]])
40}
41\keyword{file}
42
43