search for: useintern

How can I use the try catch block such that if this statement fails xml <- xmlTreeParse(xmlTxt, useInternal=TRUE) then this statement is executed xml <- xmlMalFormed() ? This code does not work but assuming its somewhere along these lines: tryCatch(xml <- xmlTreeParse(xmlTxt, useInternal=TRUE), xml <- xmlMalFormed(f1)) -- View this message in context: http://www.nabble.com/try-catch-bl...

XML is a good tool reading data from web within R. But I wonder how could get the encoding correctly. library(XML) url <- 'http://www.szitic.com/docc/jz-lmzq.html' xml <- htmlTreeParse(url, useInternal=TRUE) q <- "//tbody/tr/td" dat <- unlist(xpathApply(xml, q, xmlValue)) df <- as.data.frame(t(matrix(dat, 4))) dt<-as.character(df[15,1]) The first column of df is dates in Chinese. dt is one of the Chinese dates. When I copied the content of dt into the email, it become t...

Dear R-help, I want to download the text from a web page, however what i end up with is the html code. Is there some option that i am missing in the RCurl package? Or is there another way to achieve this? This is the code i am using: > library(RCurl) > my.url <- 'https://stat.ethz.ch/mailman/listinfo/r-help' > html.file <- getURI(my.url, ssl.verifyhost = FALSE,

...is new playcount into the original XML. Here is a reproducible example showing what I want to do: ###### ### first download one of my xml from : ## https://www.dropbox.com/s/qxteao3z8ypyfqh/petitXMLwinamp.xml ## load it in R and root it: winamp<-xmlTreeParse("petitXMLwinamp.xml", useInternal = T) racine <- xmlRoot(winamp) racine # to view the library ### I can extract one song (the first one for the example): une.chanson <- xmlSApply(racine[[1]][["dict"]][[2]],xmlValue) ### I can extract the playcount of this track with: racine[[1]][["dict"]][...

Dear List, Do you know any way I can convert XML parameters into column headers. My data is in a csv file with each row containing a xml form of data , and multiple parameters ( <param1> data_val1 </param2> , <param2> data_val2 </param2> ) I want to convert it so each row caters to one record and each parameter becomes a different column. param1

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 have a xml exported by Manifold GIS but I'm not being able to import it into R using XLM package. The file have this structure: <?xml version="1.0" encoding="UTF-8" ?> - <layout> <name>Layout 2</name> <pagesByX>1</pagesByX> <pagesByY>1</pagesByY> - <elements> <legend

...;, charStreamNew) charStreamNew <- gsub("&amp;", "and", charStreamNew) xmlVec<-readLines(textConnection(charStreamNew)) xmlInDoc <- grep("</*XML", xmlVec) xmlDoc <- xmlTreeParse(xmlVec[seq(xmlInDoc[1]+1, xmlInDoc[2]-1)], useInternal=TRUE) } processTransaction <- function(rptOwner, nodes, outFile) { transaction <- data.frame( transdate=xValHelperSpecial(nodes,"transactionDate"), securityTitle=xValHelperSpecial(nodes,&q...

Could someone provide a link or examples of parsing XML document in R? Few specific questions below: For instance I can retrieve specific nodes using this: node <- xpathApply(xml, "//" %+% xtag, xmlValue) 1) I want to be able to retrieve parent node for this node, how can I do this? getParentNode() does not seem to cut it. 2) How can I retrieve children nodes for a particular

Dear all, I'd like to use R to read in data from the web. I need some help finding an efficient way to strip the HTML tags and reformat the data as a data.frame to analyze in R. I'm currently using readLines() to read in the HTML code and then grep() to isolate the block of HTML code I want from each page, but this may not be the best approach. A short example: x1 <- readLines("

...rray> </binaryDataArrayList> </spectrum> </spectrumList> </run> </mzML> I want following Information: from mzML/run/spectrumList the "count"-value. I try this like this: >root <- xmlTreeParse("Example_Continuous.imzML",useInternal = TRUE) >spectrumList <-getNodeSet(root,"//spectrumList") >sapply(spectrumList,xmlGetAttr,"count") list() Here I get List and no value, because the node spectrumList is empty. Are there some methods for confortable navigating in the tree, like: getChildrenByName. Th...

...rray> </binaryDataArrayList> </spectrum> </spectrumList> </run> </mzML> I want following Information: from mzML/run/spectrumList the "count"-value. I try this like this: >root <- xmlTreeParse("Example_Continuous.imzML",useInternal = TRUE) >spectrumList <-getNodeSet(root,"//spectrumList") >sapply(spectrumList,xmlGetAttr,"count") list() Here I get List and no value, because the node spectrumList is empty. Are there some methods for confortable navigating in the tree, like: getChildrenByName. Th...