append.XMLNode function

Add children to an XML node

This appends one or more XML nodes as children of an existing node.

append.XMLNode(to, ...)
append.xmlNode(to, ...)

Arguments

• to: the XML node to which the sub-nodes are to be added.
• ...: the sub-nodes which are to be added to the to node. If this is a list of XMLNode objects (e.g. create by a call to lapply), then that list is used.

Details

append.xmlNode is a generic function with method append.XMLNode

for class "XMLNode" and default method base::append.

This seems historical and users may as well use append.XMLNode

directly.

Returns

The original to node containing its new children nodes.

References

https://www.w3.org/XML/, http://www.jclark.com/xml/, https://www.omegahat.net

Author(s)

Duncan Temple Lang

See Also

[<-.XMLNode

[[<-.XMLNode

[.XMLNode

[[.XMLNode

Examples

# Create a very simple representation of a simple dataset.
  # This is just an example. The result is
   # <data numVars="2" numRecords="3">
   # <varNames>
   #  <string>
   #   A
   #  </string>
   #  <string>
   #   B
   #  </string>
   # </varNames>
   # <record>
   #  1.2 3.5
   # </record>
   # <record>
   #  20.2 13.9
   # </record>
   # <record>
   #  10.1 5.67
   # </record>
   # </data>

 n = xmlNode("data", attrs = c("numVars" = 2, numRecords = 3))
 n = append.xmlNode(n, xmlNode("varNames", xmlNode("string", "A"), xmlNode("string", "B")))
 n = append.xmlNode(n, xmlNode("record", "1.2 3.5"))
 n = append.xmlNode(n, xmlNode("record", "20.2 13.9"))
 n = append.xmlNode(n, xmlNode("record", "10.1 5.67"))

 print(n)

## Not run:

   tmp <-  lapply(references, function(i) {
                                  if(!inherits(i, "XMLNode"))
                                    i <- xmlNode("reference", i)
                                  i
                              })

   r <- xmlNode("references")
   r[["references"]] <- append.xmlNode(r[["references"]], tmp)
## End(Not run)