[BioC] X11 problem

[Marcus Davy]

This came up on a thread recently regarding the OS X operating system where
the exact same error message occurred. You need to install X11R6 or X11R7 on
fedora to allow R to interface with X11 and produce X11, png, or jpeg
graphics. After installing X11R6/7 I would then build R from source again.

For OS X if you install the latest binary (2-3-1.dmg), it will give the same
error unless you also install the specific package X11User.pkg AND make sure
it is running concurrently with R. For new R users using OS X, X11User.pkg
is on the original installation disks, you have to search for and install
it. The Apple downloads portal provides a version which will *not* work for
OS version 10.4 (tiger).

http://cran.r-project.org/bin/macosx/RMacOSX-FAQ.html#X11-window-server-_002
8optional_0029

You may also need to set the environment variable for DISPLAY to ":0" with;

  Sys.putenv(DISPLAY = ":0")

This seems to be handled in the R function X11 itself for OS X;

 X11 <- 
function (display = "", width = 7, height = 7, pointsize = 12,
    gamma = getOption("gamma"), colortype = getOption("X11colortype"),
    maxcubesize = 256, bg = "transparent", canvas = "white",
    fonts = getOption("X11fonts"), xpos = NA, ypos = NA)
{
    if (display == "" && .Platform$GUI == "AQUA" && Sys.getenv("DISPLAY") ==
        "") 
        Sys.putenv(DISPLAY = ":0")       # <- for AQUA


Marcus


On 9/8/06 2:59 AM, "Seth Falcon" <sfalcon at fhcrc.org> wrote:

> "D.Enrique ESCOBAR ESPINOZA" <escobarebio at yahoo.com> writes:
> 
>> i m running R in a fedora core 5 x86 server wothout
>> X11 service.
>> X11 is the default device for R
>> So when I m drawing png images,
>> I receive this error output
>>>>>>>>>>>> 
>> Error in X11(paste("png::", filename, sep = ""), width, height,
>> pointsize,  :
>>         unable to start device PNG
>> In addition: Warning message:
>> unable to open connection to X11 display ''
>> Execution halted
>>>>>>>>>>>> 
>> How can I do for drawing png without starting X11 which isn installed
>> in my server?
> 
> I'm not sure.  I've encountered similar issues when using R remotely
> via ssh and no X11 forwarding.  One would think png is independent
> from X11, but it may not be.
> 
> This is a question for R-help, not Bioconductor.  There are likely to
> be folks there that know the answer.
> 
> Bw,
> 
> + seth
> 
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