[R] X11 error in png

[David Scott]

I managed to delete the original post about this and will no doubt mess up 
threading of responses. The post is shown below.

This looks like a problem I saw just a couple of days ago. I noticed that 
you used a path variable in determining the file location and name. If 
something is wrong with your path (e.g. the directories it specifies don't 
exist) I think you will get this error.

Check your path to make sure it is ok.

David Scott


*******************************
Original post
*******************************


From: Jack Zhu <yz8_at_georgetown.edu>
Date: Thu 17 Nov 2005 - 08:47:27 EST


Hi all,

When I ran a script containing the following codes:

     png(paste(savepath,"a_rnaplot.png",sep = ""),width = fwidth, height = 
fheight,pointsize = fpointsize);     data_deg <- AffyRNAdeg(data_cel)
     plotAffyRNAdeg(data_deg,col=cols,lty=1,lwd = "2")     #a <- par("fin")
     legend("bottomright",sampleNames(data_cel),col=cols,lty=1) 
RNAdegSlope = cbind("Sample Names" = data_deg$sample.names, "RNA Deg 
Slope" = data_deg$slope)     write.csv(RNAdegSlope, file = 
paste(savepath,"RNAdegSlope.csv",sep = ""))     dev.off()

I got this error message:

     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 ''

My system:

Linux AS 4.0 64-bit

PATH=/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11

Jack Zhu, MD, MS

Lombardi Cancer center
Georgetown University
3970 Reservoir Rd, NW, NRB, W405b
Washington, DC 20057
Email: yz8 at georgetown.edu
Tel: (202)-687-7451
Web: http://clarkelabs.georgetown.edu



-- 
_________________________________________________________________
David Scott	Department of Statistics, Tamaki Campus
 		The University of Auckland, PB 92019
 		Auckland	NEW ZEALAND
Phone: +64 9 373 7599 ext 86830		Fax: +64 9 373 7000
Email:	d.scott at auckland.ac.nz


Graduate Officer, Department of Statistics