Apologies, I forgot to add details: platform x86_64-pc-linux-gnu arch x86_64 os linux-gnu system x86_64, linux-gnu status major 3 minor 0.1 year 2013 month 05 day 16 svn rev 62743 language R version.string R version 3.0.1 (2013-05-16) nickname Good Sport
Executed inside R Studio Version 0.98.501 On Thu, Apr 17, 2014 at 12:35 PM, Timothy W. Cook <t...@mlhim.org> wrote: > R newbie, experienced software developer. > > I have a bit of confusion regarding using this function. See the XML > fragment at the end of the post. > > This works as far as retrieving the nodeset: > > > fileName <- '/home/tim/MLHIM/git/EpiS3/test_ccd/inst/examples/001.xml' > > > doc <- xmlInternalTreeParse(fileName)> nodes <- > > getNodeSet(doc,'//ccd:el-e3657392-8e26-42a4-a996-258f9e645c46')> > > Connected_To=xmlToDataFrame(nodes) > > > The result is: > > > str(Connected_To)'data.frame': 1 obs. of 7 variables: > $ comment : Factor w/ 1 level " DvURI ": 1 > $ data-name : Factor w/ 1 level "Connected To": 1 > $ valid-time-begin: Factor w/ 1 level " Use any subtype of ExceptionalValue > here when a value is missing": 1 > $ valid-time-end : Factor w/ 1 level "2020-06-07T01:31:49Z": 1 > $ DvURI-dv : Factor w/ 1 level "2009-01-20T08:40:53Z": 1 > $ relation : Factor w/ 1 level "http://www.ccdgen.com": 1 > $ NA : Factor w/ 1 level "connected to": 1 > > > The line: > > $ valid-time-begin: Factor w/ 1 level " Use any subtype of ExceptionalValue > here when a value is missing": 1 > > has a value that is a comment that occurs before the element. Then each > value is shifted by one place with an extra one at the end. > > My desired solution would be to remove commenteds from the parsed tree. > So I did this: > > > doc <- xmlInternalTreeParse(fileName, > > handlers=list("comment"=function(x,...){NULL}), useInternalNodes = TRUE) > > But now when I attempt to get the nodes I get an error. > > > nodes <- > > getNodeSet(doc,'//ccd:el-e3657392-8e26-42a4-a996-258f9e645c46')Error in > > UseMethod("xpathApply") : > no applicable method for 'xpathApply' applied to an object of class "list" > > > I am not sure what the error is telling me nor how to fix it. > > > All suggestions are welcome and appreciated. Maybe I should be using a > different approach to solving the issue with extracting the data.frame? > > Regads, > Tim > > > > > XML fragment: > <ccd:el-e3657392-8e26-42a4-a996-258f9e645c46> > <!-- DvURI --> > <data-name>Connected To</data-name> > <!-- Use any subtype of ExceptionalValue here when a value is > missing--> > <valid-time-begin>2020-06-07T01:31:49Z</valid-time-begin> > <valid-time-end>2009-01-20T08:40:53Z</valid-time-end> > <DvURI-dv>http://www.ccdgen.com</DvURI-dv> > <relation>connected to</relation> > </ccd:el-e3657392-8e26-42a4-a996-258f9e645c46> > > -- > MLHIM VIP Signup: http://goo.gl/22B0U > ============================================ > Timothy Cook, MSc +55 21 994711995 > MLHIM http://www.mlhim.org > Like Us on FB: https://www.facebook.com/mlhim2 > Circle us on G+: http://goo.gl/44EV5 > Google Scholar: http://goo.gl/MMZ1o > LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook > -- MLHIM VIP Signup: http://goo.gl/22B0U ============================================ Timothy Cook, MSc +55 21 994711995 MLHIM http://www.mlhim.org Like Us on FB: https://www.facebook.com/mlhim2 Circle us on G+: http://goo.gl/44EV5 Google Scholar: http://goo.gl/MMZ1o LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook [[alternative HTML version deleted]] ______________________________________________ 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.