Returns the parent of an XML element.
fxml_getParent(xmlflat.df, elemid)
xmlflat.df | A flat XML dataframe created with |
---|---|
elemid | The ID of the XML element. The ID is the value of the |
The ID (xmlflat.df$elemid.
) of the parent node of the XML element with ID elemid
. If no parent exists (because XML node elemid
is the root node of the XML document) then NULL
is returned.
# Load example file with population data from United Nations Statistics Division # and create flat dataframe example <- system.file("worldpopulation.xml", package="flatxml") xml.dataframe <- fxml_importXMLFlat(example) # Get the ID of the parent element of the XML element with ID 4 (xml.dataframe$elemid. == 4) fxml_getParent(xml.dataframe, 4)#> [1] 3