example - export a data frame to an XML file
Hi
Is this what you are after ... ?
data <-
read.csv(textConnection('"date","UYG.Open","UYG.High","UYG.Low","UYG.Close","UYG.Volume","UYG.Adjusted"
"2007-02-01",71.32,71.34,71.32,71.34,200,69.23
"2007-02-02",72.2,72.2,72.2,72.2,200,70.06
"2007-02-05",71.76,71.76,71.76,71.76,5100,69.63
"2007-02-06",72.85,72.85,72.85,72.85,3800,70.69
"2007-02-07",72.85,72.85,72.85,72.85,0,70.69'),
as.is=TRUE)
library(XML)
xml <- xmlTree()
xml$addTag("document", close=FALSE)
for (i in 1:nrow(data)) {
xml$addTag("row", close=FALSE)
for (j in names(data)) {
xml$addTag(j, data[i, j])
}
xml$closeTag()
}
xml$closeTag()
# view the result
cat(saveXML(xml))
Paul
zubin wrote:
Duncan, thanks for the note - the schema looks like this - is this what your asking for? <document> <row> <date>2007-02-01</date > <UYG_Open>71.32</UYG_Open > <UYG_High>71.34</UYG_High > <UYG_Low>71.32</UYG_Low > <UYG_Close>71.34</UYG_Close > <UYG_Volume>200</UYG_Volume > <UYG_Adjusted>69.23</UYG_Adjusted > </row> <row> <date>2007-02-02</date > <UYG_Open>72.2</UYG_Open > <UYG_High>72.2</UYG_High > <UYG_Low>72.2</UYG_Low > <UYG_Close>72.2</UYG_Close > <UYG_Volume>200</UYG_Volume > <UYG_Adjusted>70.06</UYG_Adjusted > </row> </document> Duncan Temple Lang wrote:
Hi Zubin. The first thing is to send us a link to the schema that the other application expects. That would give us a "one-to-one" mapping; otherwise, data.frame to arbitrary XML is to vague. Currently, there is nothing in the XML package that would be able to take an XML schema and write an R object to such a structure. However, I am in the process of creating an XMLSchema package which can read XML schema and make the description available to R so that we can read data from an XML file corresponding to that schema and this could be adapted in some ways to automate the creation of XML from an R object (under certain assumptions). So please send us all a link to the XML schema. D. zubin wrote:
In need of exporting an XML file from R, I scrub some data in R and push the data into another application requiring XML. The data set is a very straightforward data frame of stock prices- see below. I know the package XML is the one to use, but need an example or some direction on where to start. I know we need to define the schema - can this be done in the R XML package?
"date","UYG.Open","UYG.High","UYG.Low","UYG.Close","UYG.Volume","UYG.Adjusted" "2007-02-01",71.32,71.34,71.32,71.34,200,69.23 "2007-02-02",72.2,72.2,72.2,72.2,200,70.06 "2007-02-05",71.76,71.76,71.76,71.76,5100,69.63 "2007-02-06",72.85,72.85,72.85,72.85,3800,70.69 "2007-02-07",72.85,72.85,72.85,72.85,0,70.69
______________________________________________ R-help at 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.
______________________________________________ R-help at 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.
Dr Paul Murrell Department of Statistics The University of Auckland Private Bag 92019 Auckland New Zealand 64 9 3737599 x85392 paul at stat.auckland.ac.nz http://www.stat.auckland.ac.nz/~paul/