Determine the number of children in an XMLNode object.

This function is a simple way to compute the number of sub-nodes (or children) an XMLNode object possesses. It is provided as a convenient form of calling the xmlSize function.

# S3 method for class 'XMLNode'
length(x)

Arguments

x

the XMLNode object whose length is to be queried.

Value

An integer giving the number of sub-nodes of this node.

Author

Duncan Temple Lang

See also

xmlSize xmlChildren

Examples

  doc <- xmlTreeParse(system.file("exampleData", "mtcars.xml", package="XML"))
  r <- xmlRoot(doc, skip=TRUE)
  length(r)
#> [1] 33
    # get the last entry
  r[[length(r)]]
#> <record id="Volvo 142E">21.4   4 121.0 109 4.11 2.780 18.60  1  1    4    2</record>