xmlElementSummary: Frequency table of names of elements and attributes in XML content
Description
This function is used to get an understanding of the use
of element and attribute names in an XML document.
It uses a collection of handler functions to gather
the information via a SAX-style parser.
The distribution of attribute names is done within each
"type" of element (i.e. element name)
a named vector of counts where the names are the
(XML namespace qualified) element names in the XML content
attributes
a list with as many elements as there are elements
in the nodeCounts element of the result. Each element of this
sub-list gives the frequency counts for the different attributes seen within
the XML elements with that name.
Arguments
url
the source of the XML content, e.g. a file, a URL, a
compressed file, or a character string
handlers
the list of handler functions used to collect the
information. These are passed to the function
xmlEventParse
as the value for the handlers parameter.