HU,ZHENGJUN
2007-Oct-22 13:56 UTC
[R] How to use a specifical graphical device (e.g., png, bmp) with R version 2.5.1under Linux
Hi All, I am now using R version 2.5.1 under Linux (Red Hat), and have some problems to use some graphical devices (e.g., png, jpeg, bmp and so on). Can you tell/teach me how to solve the problem(s)? See below for details. (1) I make sure that package:grDevices is on the list using search(), for example:> search()[1] ".GlobalEnv" "package:stats" "package:graphics" [4] "package:grDevices" "package:utils" "package:datasets" [7] "package:methods" "Autoloads" "package:base" (2) I use png() and got the error:> png()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 '' in: png() (3) I use X11() and obtained the error again> X11()Error in X11(display, width, height, pointsize, if (is.null(gamma)) 1 else gamma, : unable to start device X11 In addition: Warning message: unable to open connection to X11 display '' in: X11() thank you very much for the help. Howard