CODEWITHSUNDEEP
xmlr
Next Door Engineer
Next Door Engineer

Reputation: 2886

Converting from a xml parsed list to character in R

I have read and parsed a url using htmlParse().

I have used xpathApply to filter out and get the exact content that I want.

I want to convert the list created into character. When I try to convert I get this error:

"<pointer: 0x000000001673db70>"

I am assuming that the parsed content is pointed in the main object using pointers.

The content that I want might have some some XML syntax in it, so xmlValue will do no good.

Upvotes: 1

Views: 1736

Answers (1)

jdharrison
jdharrison

Reputation: 30425

You can use saveXML to convert the internal nodes to characters:

library(XML)
appUrl <- 'http://cran.r-project.org/'
doc <- htmlParse(appUrl)
out1 <- xpathSApply(doc, "//*/frame")
out2 <- xpathSApply(doc, "//*/frame", saveXML)
> str(out1)
List of 3
 $ :Classes 'XMLInternalElementNode', 'XMLInternalNode', 'XMLAbstractNode' <externalptr> 
 $ :Classes 'XMLInternalElementNode', 'XMLInternalNode', 'XMLAbstractNode' <externalptr> 
 $ :Classes 'XMLInternalElementNode', 'XMLInternalNode', 'XMLAbstractNode' <externalptr> 
> str(out2)
 chr [1:3] "<frame src=\"logo.html\" name=\"logo\" frameborder=\"0\"/>" ...

Upvotes: 6

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