Re: [R] Creation of png=problems

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Tue, 22 Jul 2008 08:05:11 +0100 (BST)

  1. As the posting guide asked, update your R. R 2.7.x has a new png() device that many people prefer.
  2. As the INSTALL file points out, this is an installation issue discussed in the R-admin manual. JPEG and PNG support is optional (even on Windows, but someone compiled it in for you if you are using a binary).

R does run on Solaris 8 and does support jpeg() and png() there *if you follow the R-admin manual* and install the additional software needed. (For how much longer we will be able to test under Solaris 8, I don't know -- the system I use will be decommissioned this summer.)

On Mon, 21 Jul 2008, Romain wrote:

>
> Hi everybody,
>
> I am currently working with R and I would like to create jpeg graphs with it.

Hmm, it is jpeg() creates jpeg graphs, not png().

> I am working on Windows and Unix but I would like to be able to create
> graphs (jpeg, png, bitmap...) under Unix.
>
> I am working on Solaris version 8. The documentation for R states that
> the latest version of or R known to compile on Solaris 8 is version
> 2.6.2. I have been able to compile and install R version 2.6.2. under
> Unix. I also installed Hmisc package needed by my script.
>
> The problem is that when I launch my script to create graphs from text
> files I get this error :
>
>> Create_Graph("File")
> Error in X11(paste("png::", filename, sep = ""), width, height, pointsize, :
> unable to start device PNG
> In addition: Warning message:
> In png(paste(PATH, "/", filename, sep = ""), 800, 600) :
> no png support in this version of R
>
> The thing is that I have tried to run my script under Windows with the same version (2.6.2) and everything is going well and the graph are created.
>
> Is it because (under Unix):
>> capabilities()
> jpeg png tcltk X11 http/ftp sockets libxml fifo
> FALSE FALSE FALSE TRUE TRUE TRUE TRUE TRUE
>
> If so, could someone explain to me how to change these capabilities in
> order to ba able to set them TRUE.
>
> I have also tried with other version of R but the error is the same one.
>
> If you have any other ideas about why it doesn't work I would be very
> grateful.
>
> The fact is that I have created a programm under Unix to make automatic
> the creation of the text files and I would like to create automatically
> the correspondant graphs.
>
> I hope someone will be able to help me.
>
> Thanks for your time.
>
> Have a good day.
>
> R.

-- 
Brian D. Ripley,                  ripley_at_stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Received on Tue 22 Jul 2008 - 07:09:16 GMT

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