Question

I have an XML file DemoFeed.XML and am trying to get it into a dataframe using the XML package and function xmlToDataFrame. However I am getting an error message:Error: XML content does not seem to be XML, nor to identify a file name

 <demo_feed>  
 <TimeStamp>20090610153000</TimeStamp>
 <XAU Bid="952.2" Ask="953.0"/>
 <XAG Bid="15.17" Ask="15.22"/>
 <XPT Bid="1266" Ask="1271"/>
 <XPD Bid="256" Ask="261"/>
 <EUR Bid="1.3993" Ask="1.3996"/>
 </demo_feed> 

I would be grateful for your help.

Kind regards,

Adam

Answer 1

Hansi’s comment is correct. This is one way to do it:

> doc = xmlParse('demofeed.xml')
> data.frame(t(xpathSApply(doc, 
      '/demo_feed/*[@Bid]', 
      function(x) c(name=xmlName(x), xmlAttrs(x)))))

  name    Bid    Ask
1  XAU  952.2  953.0
2  XAG  15.17  15.22
3  XPT   1266   1271
4  XPD    256    261
5  EUR 1.3993 1.3996