Re: [R] Analyzing Publications from Pubmed via XML

From: Armin Goralczyk <>
Date: Tue, 18 Dec 2007 16:02:52 +0100

On 12/18/07, David Winsemius <> wrote:
> David Winsemius <> wrote in
> news:Xns9A09CA51DB1E4dNOTwinscomcast_at_80.91.229.13:
> > "Armin Goralczyk" <> wrote in
> >
> >> I tried the above function with simple search terms and it worked
> >> fine for me (also more output thanks to Martin's post) but when I use
> >> search terms attributed to certain fields, i.e. with [au] or [ta], I
> >> get the following error message:
> >>> pm.srch()
> >> 1: "laryngeal neoplasms[mh]"
> >> 2:
> > I am wondering if you used spaces, rather than "+"'s? If so then you
> > may want your function to do more gsub-processing of the input string.
> I tried my theory that one would need "+"'s instead of spaces, but
> disproved it. Spaces in the input string seems to produce acceptable
> results on my WinXP/R.2.6.1/RGui system even with more complex search
> strings.
> --

It's not the spaces, the problem is the tag (sorry that I didn't specify this), or maybe the string []. I am working on a Mac OS X 10.4 with R version 2.6. Is it maybe a string conversion problem? In the following warning strings in the html adress seem to be different:

Fehler in .Call("RS_XML_ParseTree", as.character(file), handlers, as.logical(ignoreBlanks), :
 error in creating parser for neoplasms[mh]
I/O warning : failed to load external entity "http%3A//"

Armin Goralczyk, M.D.
Universitätsmedizin Göttingen
Abteilung Allgemein- und Viszeralchirurgie
Rudolf-Koch-Str. 40
39099 Göttingen
Dept. of General Surgery
University of Göttingen
Göttingen, Germany
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Received on Tue 18 Dec 2007 - 15:07:13 GMT

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