With the ssl.verifypeer = FALSE argument it works:

 x = getBinaryURL(dd, ssl.verifypeer = FALSE)


On Fri, Jan 7, 2011 at 6:24 AM, Dieter Menne
<dieter.menne@menne-biomed.de>wrote:

>
>
> John Kane-2 wrote:
> >
> > #   Can anyone suggest why this works
> >
> > datafilename <-
> > "http://personality-project.org/r/datasets/maps.mixx.epi.bfi.data"
> > person.data  <- read.table(datafilename,header=TRUE)
> >
> > # but this does not?
> >
> > dd <-
> > "https://sites.google.com/site/jrkrideau/home/general-stores/trees.txt"
> > treedata <- read.table(dd, header=TRUE)
> >
> > ===================================================================
> >
> > Error in file(file, "rt") : cannot open the connection
> >
>
> Your original file is no longer there, but when I try RCurl with a png file
> that is present, I get a certificate error:
>
> Dieter
>
> --------
> library(RCurl)
> sessionInfo()
> dd <-
> "https://sites.google.com/site/jrkrideau/home/general-stores/history.png"
> x = getBinaryURL(dd)
>
> -------------
> > sessionInfo()
> R version 2.12.1 (2010-12-16)
> Platform: i386-pc-mingw32/i386 (32-bit)
>
> locale:
> [1] LC_COLLATE=German_Germany.1252  LC_CTYPE=German_Germany.1252
> [3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C
> [5] LC_TIME=German_Germany.1252
>
> attached base packages:
> [1] stats     graphics  grDevices datasets  utils     methods   base
>
> other attached packages:
> [1] RCurl_1.5-0.1  bitops_1.0-4.1
>
> loaded via a namespace (and not attached):
> [1] tools_2.12.1
>
> > dd <-
> > "https://sites.google.com/site/jrkrideau/home/general-stores/history.png
> "
>
> > x = getBinaryURL(dd)
> Error in curlPerform(curl = curl, .opts = opts, .encoding = .encoding) :
>  SSL certificate problem, verify that the CA cert is OK. Details:
> error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify
> failed
>
>
>
> --
> View this message in context:
> http://r.789695.n4.nabble.com/Accessing-data-via-url-tp3178094p3178773.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help@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.
>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

	[[alternative HTML version deleted]]

