XML package example code?
Peng Yu wrote:
On Wed, Nov 25, 2009 at 12:19 AM, cls59 <chuck at sharpsteen.net> wrote:
Peng Yu wrote:
I'm interested in parsing an html page. I should use XML, right? Could you somebody show me some example code? Is there a tutorial for this package?
Did you try looking through the help pages for the XML package or browsing the Omegahat website? Look at: library(XML) ?htmlTreeParse And the relevant web page for documentation and examples is: http://www.omegahat.org/RSXML/
http://www.omegahat.org/RSXML/shortIntro.html I'm trying the example on the above webpage. But I'm not sure why I got the following error. Would you help to take a look? $ Rscript main.R
library(XML)
download.file('http://www.omegahat.org/RSXML/index.html','index.html')
trying URL 'http://www.omegahat.org/RSXML/index.html' Content type 'text/html; charset=ISO-8859-1' length 3021 bytes opened URL ================================================== downloaded 3021 bytes
doc = xmlInternalTreeParse("index.html")
You are trying to parse an HTML document as if it were XML. But HTML is often not well-formed. So use htmlParse() for a more forgiving parser. Or use the RTidyHTML package (www.omegahat.org/RTidyHTML) to make the HTML well-formed before passing it to xmlTreeParse() (aka xmlInternalTreeParse()). That package is an interface to libtidy. D.
Opening and ending tag mismatch: dd line 68 and dl Opening and ending tag mismatch: li line 67 and body Opening and ending tag mismatch: dt line 66 and html Premature end of data in tag dd line 64 Premature end of data in tag li line 63 Premature end of data in tag dt line 62 Premature end of data in tag dl line 61 Premature end of data in tag body line 5 Premature end of data in tag html line 1 Error: 1: Opening and ending tag mismatch: dd line 68 and dl 2: Opening and ending tag mismatch: li line 67 and body 3: Opening and ending tag mismatch: dt line 66 and html 4: Premature end of data in tag dd line 64 5: Premature end of data in tag li line 63 6: Premature end of data in tag dt line 62 7: Premature end of data in tag dl line 61 8: Premature end of data in tag body line 5 9: Premature end of data in tag html line 1 Execution halted
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