similar to: XML write?

Dear, I want to read XML documents, add child nodes to some elements and store everything back as an XML document. I've tryed the following: doc <- xmlTreeParse("file.xml") QTListNode<-xmlElementsByTagName(xmlRoot(doc)[[1]],"tagname") append.xmlNode(QTListNode[[1]],newXMLNode(name ="Norm", attrs = NULL)) saveXML(doc, file = "out.xml",

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 Users: After installing Bioconductor, RSXML and all the relevant Win32 DLLs (libxml2, zlib, iconv), I receive the following error message when using pm.getabst() Error in xmlRoot(absts) : no applicable method for "xmlRoot" I receive this when using the example from help(pm.getabst). Downloading the target XML file, parsing it with xmlTreeParse and applying xmlRoot returns no

Hi, I have an existing XML document on disk, which I'd like to use as a template, and exchange a subnode with my own newly created subtree: <?xml version="1.0"?> <Duncan> <name a="1" b="xyz"> <first>Duncan</first> <last>Temple Lang</last> </name> </Duncan> created by e.g. ? library(XML)

Dear useRs, I have a simple/RTFM question about XML parsing. Given an XML file, such as (fragment) <A>100</A> <B>23</B> <C>true</C> how do I import it in a data frame or list, so that the values (100, 23, true) can be accessed through the names A, B and C? I installed the XML package and looked over the documentation... however after 20 minutes and a couple of

Dear All I am doing one distributed data mining program. So I selected GridR package for the distributed programming. *grid.init(service="local",debug=FALSE, localTmpDir="GridRTmp/") grid.apply("x",UCS, wait=TRUE )* UCS is a function. When I execute this statement, I have some errors like : *cannot load local function/variable: xmlRoot extracted from line: : no

Hi, I'm trying to use the XML package to read an RSS feed. To get started, I was trying to use this post as an example: http://www.r-bloggers.com/how-to-build-a-dataset-in-r-using-an-rss-feed-or-web-page/ I can replicate the beginning section of the post, but when I try to use another RSS feed I have an issue. The RSS feed I would like to use is: > URL <-

I would like to track in which journals articles about a particular disease are being published. Creating a pubmed search is trivial. The search provides data but obviously not as an R dataframe. I can get the search to export the data as an xml feed and the xml package seems to be able to read it. xmlTreeParse("

Hi all, this is my first post in this mailing group. I hope that anyboby could help me parsing a xml file. I found this website http://www.omegahat.org/RSXML/gettingStarted.html but unfortunately my XML file is not as easy as the one in the example. Example: <?xml version="1.0" encoding="UTF-8"?> <?xml-stylesheet

Hello again, Another stumble here that is defeating me. I try: a<-readLines(url("http://feeds.feedburner.com/grokin")) t<-XML::xmlTreeParse(a, ignoreBlanks=TRUE, replaceEntities=FALSE, asText=TRUE) elem<- XML::getNodeSet(XML::xmlRoot(t),"/rss/channel/item")[[1]] And I get: Start tag expected, '<' not found Error: 1: Start tag expected, '<' not

Hello all, I have a problem with the way attributes are dealt with in the function xmlToList(), and I haven't been able to figure it out for days now. Say I have a document (produced by nmap) like this: > mydoc <- '<host starttime="1365204834" endtime="1365205860"><status state="up" reason="echo-reply"

I would like to learn how to parse a mixed text/xml document I downloaded from the sec.gov website (see example below). I would like to parse this to get the value for each xml tag and then access it within R, but I don't know much about xml so I don't even know where to start debugging the errors I am getting in this example code. Can anyone help me get started? Thanks, Roger ftp

I'm struggling with package XML to parse a Garmin file (named *.tcx). I wonder if it's form is incomplete, but appreciably reluctant to paste even a shortened version. The output below shows I can get nodes, but an attempt at value of a single node comes up empty (even though there is data there. One question: Has anybody succeeded parsing Garmin .tcx (xml) files? Thanks! Michael

Hello, I'm attempting to read information from an XML into a data frame in R using the "XML" package. I am unable to get the data into a data frame as I would like. I have some sample code below. *XML Code:* Header... Data I want in a data frame: <data> <row BRAND="GMC" NUM="1" YEAR="1999" VALUE="10000" /> <row

Hello! I am trying to get specific fields from an XML document and I am totally puzzled. I hope someone can help me. # URL URL<-"http://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=pubmed&id=11877539,11822933,11871444&retmode=xml&rettype=citation" # download a XML file tmp <- xmlTreeParse(URL, isURL = TRUE) tmp <- xmlRoot(tmp) Now I want to extract only

Dear all I am trying to use the ODB package to connect to an libreoffice-odb database. The libreoffice package is german, thus, decimal separator is a comma. However, I can open the database and upload a it without error, library(ODB) db <- odb.open("Test.odb") but a soon as the "odb.open" command is executed, the decimal separator in R is changed to comma. Before

Hi, I have one xml file. <Class> <Node1 code ="1"> First node </Node1> <Node2 code ="1"> Second node </Node2> <Node3 code ="1"> Third node </Node3> <Node1 code ="2"> Fourth node </Node1> </Class> for (i in 1:xmlSize()) { print(Class[i]) # how can i filter Node1 ? } by

Hi Guys, I am relatively new to R and was wondering if I could next my gsub command in identifying one object I have data which looks like this: <name>Taiwan_250km</name> I want it to look like this: Taiwan_250km So essentially I just want to gsub '<name>' and </name> with nothing! So far I have got this: PolyNam <-

Hey, I have an double loop like this: chunk <- list(1:10, 11:20, 21:30) for(k in 1:length(chunk)){ print(chunk[k]) DummyCatcher <- NULL for(i in chunk[k]){ print("i load something") dummy <- 1 print("i do something") dummy <- dummy + 1 print("i do put it together") DummyCatcher = rbind(DummyCatcher, dummy) } print("i save a chunk

Does anyone have any experience retrieving latitutde and longitude for an address from the Google Maps API? I'd like to have an R script that submits a street address, city, state, and zip code and returns the coordinates. So far, I've been submitting the coordinates from another program, then loading the coordinates in R and merging them back into the data frame I want to use.