On Thursday 07 September 2006 10:59, Seth Falcon 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. Just to save the trouble, this is an R FAQ (well, not exactly, but I think it will answer the question at least partially): http://cran.r-project.org/doc/manuals/R-FAQ.html#How-do-I-produce-PNG- graphics-in-batch-mode_003f Sean

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 > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: > http://news.gmane.org/gmane.science.biology.informatics.conductor ______________________________________________________ The contents of this e-mail are privileged and/or confidenti...{{dropped}}