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") ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
