Thanks for all the help
I finally got it working. I originally installed R from the RPM, but that
didn't have cairo setup, and so I downloaded the source code, and manually
installed it, and realized that pkg-config wasn't finding cairo, hince the
reason why the rpm wasn't using it. Aparently even though I had cairo and
cairo-devel installed there was another dependance that I hadn't installed.
Once I got that one installed, I had no trouble having everything find
cairo, and therefore I was able to install R, and now the graphs work
without a hitch.
Now my next goal is to figure out how best to create a graph with several
series of plots, boy is that going to be fun. lol
Thanks for everyone's help,
Patrick Jackson
On Tue, Jun 17, 2008 at 3:49 PM, Gregory Warnes <
[EMAIL PROTECTED]> wrote:
>
> The Cairo package is an optional library. You should be able to install it
> using:
>
> > install.packages(Cairo)
>
> And then get information on using it via:
>
> > library(Cairo)
> > ? Cairo
>
> -Greg
>
>
> On 6/16/08 4:13PM , "Patrick Jackson" <[EMAIL PROTECTED]> wrote:
>
> I believe we are finally getting somewhere
>
> By doing capabilities() in R I get:
>
> jpeg png tcltk X11 aqua
> http/ftp sockets libxml
> TRUE TRUE TRUE TRUE FALSE TRUE TRUE TRUE
> fifo cledit iconv NLS profmem cairo
> TRUE TRUE TRUE TRUE FALSE FALSE
>
> proving that my copy of R doesn't use cairo
>
> Now to find a copy that does use cairo
>
> Thanks
> On Mon, Jun 16, 2008 at 4:01 PM, Barry Rowlingson
> <[EMAIL PROTECTED]> wrote:
> > Patrick Jackson wrote:
> >
> >> So it does look like it is the issue with Xwindows, but since I have R
> >> version 2.7, why am I getting this error?
> >
> > Hmmm maybe I was a spot too hasty!
> >
> > The png() function can use either the Xlib or the Cairo back-end to make
> > its file. If it is using Xlib then you need an Xserver, if it's using
> > Cairo then you don't. My next guess is that your R doesn't have cairo
> > capabilities.
> >
> > The 'capabilities()' function will tell you if it has cairo. png()
> > should use it by default, so my assumption is you don't. I can get your
> > error on a non-Xlib connection by doing png(file="foo.png",type="Xlib").
> >
> > You'll have to sort out a cairo-enabled version of R elsewhere - I'm
> > pretty certain this isn't an Rpy problem (unless R running under Rpy
> > isn't finding a cairo lib for some reason).
> >
> > So, see if interactive R has cairo capabilities. If it does, and png()
> > is using it, then it might be an Rpy problem...
> >
> > Barry
> >
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> --
> Gregory R. Warnes, Ph.D
> Program Director
> Center for Computational Arts, Sciences, and Engineering
> Univerisity of Rochester
>
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>
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