RDocumentation: append.xmlNode

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if(!require('XML')) {
    install.packages('XML')
    library('XML')
}

# 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)


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

   r <- xmlNode("references")
   r[["references"]] <- append.xmlNode(r[["references"]], tmp)