Re: [R] getNodeSet - what am I doing wrong?

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

Re: [R] getNodeSet - what am I doing wrong?

Johannes Graumann wrote: Thanks! but: library(XML) xmlDoc - xmlTreeParse(http://www.unimod.org/xml/unimod_tables.xml;) You need to xmlParse() or xmlTreeParse(url, useInternalNodes = TRUE) (which are equivalent) in order to be able to use getNodeSet(). The error you are getting is because

Re: [R] getNodeSet - what am I doing wrong?

Sorry about that - got dropped from my attempts yesterday (see the first example below, that has the useInternalNodes=TRUE) ... Thanks again, Joh Duncan Temple Lang wrote: Johannes Graumann wrote: Thanks! but: library(XML) xmlDoc -

[R] getNodeSet - what am I doing wrong?

Hi, Why is the following retuning a nodset of length 0: library(XML) test - xmlTreeParse( http://www.unimod.org/xml/unimod_tables.xml,useInternalNodes=TRUE) getNodeSet(test,//modifications_row) Thanks for any hint. Joh __ R-help@r-project.org

Re: [R] getNodeSet - what am I doing wrong?

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