Thanks!
but:
> library(XML)
> xmlDoc <- xmlTreeParse("http://www.unimod.org/xml/unimod_tables.xml";)
> getNodeSet(xmlDoc,"//x:modifications_row", "x")
Error in function (classes, fdef, mtable) :
unable to find an inherited method for function "saveXML", for signature
"XMLDocument"
?
Thanks, Joh
Duncan Temple Lang wrote:
>
> Hi Johannes
>
> This is a common issue. The document has a default XML namespace, e.g.
> the root node is defined as
>
> <unimod xmlns="http://www.unimod.org/xmlns/schema/unimod_tables_1";...>
> .....
>
> So you need to specify which namespace to match in the XPath expression
> in getNodeSet(). The XML package provides a "convenient" facility for
> this. You need only specify the prefix such as "x" and that will
> be bound to the default namespace. You need to specify this in
> two places - where you use it in the XPath expression and
> in the namespaces argument of getNodeSet()
>
> So
> getNodeSet(test, "//x:modifications_row", "x")
>
> gives you probably what you want.
>
> D.
>
>
>
> On 8/30/10 8:02 AM, Johannes Graumann wrote:
>> library(XML)
>>> test <- xmlTreeParse(
>>> "http://www.unimod.org/xml/unimod_tables.xml",useInternalNodes=TRUE)
>>> getNodeSet(test,"//modifications_row")
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