similar to: Removing or overwriting an XML node

Hello, I am trying to convert a simple data.frame (it will always be a few equally long variables) into the XML format (which I don't understand too well but need as input for another program) and reverse the operation (from XML back into data.frame). I found some code which does the first and it works good enough for me (see below). Is there an easy way to reverse the operation? My XML files

Hello! I am crossposting this to R-help and BioC, since it is relevant to both groups. I wrote a wrapper for Entrez search utility (link for this is provided bellow), which can add some new search functionality to existing code in Bioconductor's package 'annotate'*. http://eutils.ncbi.nlm.nih.gov/entrez/query/static/esearch_help.html Entrez search utuility returns a XML document

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

Can't seem to get the code below working. It gets stuck on line 24 inside the function hm; comments show the line in question. The function hm is called by sapply and is at the bottom of the code. Other stuff above line 24 works correctly including the first couple of lines of the function hm. Should I be using a different apply function or am I doing something wrong with xmlTreeParse ?

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",

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! I am not experienced enough to know whether I have found a bug or whether I am just ignorant. I have been trying to use the tm package to read in material from RSS 2.0 feeds, which has required grappling with writing a reader for that flavour of XML. I get an error - "Error : 1: EntityRef: expecting ';' - which I think I've tracked down. The feed being processed is from

Hi, I'm new to R, and found this code confusing. It is from the bioconductor package "RpsiXML". entryCount <- length(nodes) The "nodes" object is either the argument nor generated in the function. How can R find the "nodes" object? What am I missing here? Thanks Zheng Jk parseXmlEntryNodeSet <- function(psimi25file, psimi25source, verbose=TRUE) {

Hi, I'm looking for help extracting some information of the zillow website. I'd like to do this for the general case where I manually change the address by modifying the url (see code below). With the url containing the address, I'd like to be able to extract the same information each time. The specific information I'd like to be able to extract includes the homedetails url, price

Hello everyone, I would like to parse very large xml files from MS/MS experiments and create R objects from their content. (By very large, I mean going up to 5-10Gb, although I am using a 'small' 40M file to test my code.) My first attempt at parsing the 40M file, using the XML package, took more than 2200 seconds and left me quite disappointed. I managed to cut that down to around 40

Is there any function to write a XML structure, after it was read using xmlTreeParse? Ex: library(XML) x <- xmlTreeParse("Irpf2008/aplicacao/dados/12345678901/12345678901.xml") # write it... Alberto Monteiro PS: please, brazilians, don't be offended by my foul language!

Dear colleagues, Could I get some assistance using postForm() to scrape the business names and addresses at this website: http://www.brantford.ca/business/LocalBusinessCommunity/Pages/BusinessDirectorySearch.aspx I've read through (http://www.omegahat.org/RCurl/RCurlJSS.pdf) and scoured the web for tutorials, but I can't crack it. I'm aware that this is probably a pretty basic

Hello: The following code extracts the links to the daily transcripts of Canada's House Of Commons. 'links' is a matrix of URLs (ncol=1), each of which points to one day's transcripts. If you inspect the code for scrape(links[1]), you will find that periodically there appears an italicitze tag after a paragraph tag (<p some text ><i>Translation</i></p>.

Dear R experts, I try to extract certain child nodes from an XML document and construct a table in which the parent node names are the columns and the child id values, joined in a list, are the cell content. If I first apply an XPath query to extract all above parent nodes, then iterate over those nodes and again apply a XPath query to select their child nodes, I get *ALL* matching child nodes

Dear colleagues, each time I use htmlParse, R crashes or hangs. The url I'd like to parse is included below as is the results of a series of basic commands that describe what I'm experiencing. The results of sessionInfo() are attached at the bottom of the message. The thing is, htmlTreeParse appears to work just fine, although it doesn't appear to contain the information I need (the

Is it possible to modify an emails subject line in a sieve script? I've seen references to 'addtag' whilst googling, but it appears dovecots implementation doens't support it - are there any other methods? As a side note, can anyone suggest a web based script editor that works? Simply a text area to write the script in would do Thanks, -- Ian P. Christian ~ pookey.co.uk

Following code bugs with "Memory allocation failed: Copying Node" error after parsing n thousand files. I have included the main code(below) and functions(after the main code). I am not sure which lines are causing the copying Node which results in memory failure. Please advise. #Beginning of Code for(i in 1:nrow(newFile)) { if(i%%3000 == 0) gc()

Dear Listers: I have a couple of data frames to report and each corresponds to different condtions, e.g. conditions=c(10, 15, 20, 25). In this examples, four data frames need to be exported in a "pretty" report. I knew Perl has some module for exporting data to Excel and after googling, I found R does not. So I am wondering if there is a package in R for generating good reports. I

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 <-

Dear all, for my diploma thesis I have to import huge XML-Files into R for statistical processing - huge means a size about 33 MB. I'm using the XML-Package version 1.9 As far as reading the complete file into R via xmlTreeParse doesn't work or is too slow, I'm trying to use xmlEventParse but I got completely stuck. I have many different type of nodes + <configuration>