In R, how can I loop over repeated XML nodes, and save text values in a list?

Question

I\'m working with XML files from clinicaltrials.gov, which have a structure like this:

  ...
  
  ...
  

        

Answer 1

Here is an example

 ns <- getNodeSet(xml, '//clinical_results/outcome_list/outcome/analysis_list/analysis/method')
 element_cnt <-length(ns))
 strings<-paste(sapply(ns, function(x) { xmlValue(x) }),collapse="|"))