[R] two problems on R in Ubuntu linux

[Henrik Bengtsson]

Always provide sessionInfo() and traceback() when reporting errors. /Henrik

On Mon, Apr 12, 2010 at 8:34 AM, Mao Jianfeng <jianfeng.mao at gmail.com> wrote:
> Dear R-helpers
>
> I want to express my respect and thankfulness to all of you.
>
> I just switch from windows xp to Ubuntu linux platform. I am facing
> two problems when I run R in Ubuntu.
>
> I need your helps and advice, thanks in advance.
>
> -----------------------------------------------------------------------------------------------------------------------------------------------------------
> 1. JGR() can not be loaded in R session properly
>
> when I load JGR package in R, I got:
> ----------------------------------------------------------------------------------------------
>> library(JGR)
> Loading required package: rJava
> Loading required package: JavaGD
> Loading required package: iplots
> Error in .jnew("org/rosuda/iplots/Framework") :
>  java.awt.AWTError: Cannot load AWT toolkit: gnu.java.awt.peer.gtk.GtkToolkit
> Error: package 'iplots' could not be loaded
>
> note: Tcl/Tk interface can be loaded by R automatically.
>
> Loading Tcl/Tk interface ... done
>
> ----------------------------------------------------------------------------------------------------------------------------------------------------------
> 2. demo() just can return a blank window-board
>
> when I execute demo(graphics) and hit <Return>, I just got a blank prompt.
> -----------------------------------------------------------------------------------------------
>> demo(graphics)
>
>
>        demo(graphics)
>        ---- ~~~~~~~~
>
> Type  <Return>   to start :
>
>> require(datasets)
>
>> require(grDevices); require(graphics)
>
>> ## Here is some code which illustrates some of the differences between
>> ## R and S graphics capabilities.  Note that colors are generally specified
>> ## by a character string name (taken from the X11 rgb.txt file) and that line
>> ## textures are given similarly.  The parameter "bg" sets the background
>> ## parameter for the plot and there is also an "fg" parameter which sets
>> ## the foreground color.
>>
>>
>> x <- stats::rnorm(50)
>
>> opar <- par(bg = "white")
>
>> plot(x, ann = FALSE, type = "n")
> Hit <Return> to see next plot:
> Error in plot.new() : attempt to plot on null device
> -------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Yours,
>
> Jian-Feng, Mao
> the Institute of Botany, CAS
> Beijing, China
>
> ______________________________________________
> R-help at 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.
>