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I have compiled R version 2.12.1 (2010-12-16) for my system (CentOS), and afterwards I installed Cairo_1.4-5.

I'd like use Cairo to produce PNG (and maybe PDF) output of my graphs when I batch-invoke my scripts, but this gives me difficulties when I am using X (I am tunneling X through ssh and it often disconnects while the R scripts are running...), so this is why I want to use Cairo.

(I do not have root access btw).

Although it's installed according to sessionInfo

> sessionInfo()
R version 2.12.1 (2010-12-16)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] C
attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base
I can not call CairoPDF:
> CairoPDF()
Error: could not find function "CairoPDF"
Weirdly, I can invoke a function called cairo_pdf
> cairo_pdf()
I can not call CairoPNG, cairo_PNG or cairo_png:
> CairoPNG()
Error: could not find function "CairoPNG"
> cairo_PNG()
Error: could not find function "cairo_PNG"
> cairo_png()
Error: could not find function "cairo_png"
Is something wrong withmy installation? Frankly I have no idea how to proceed from here, why can't I even call CairoPNG()?
                Your sessionInfo() doesn't indicate that you have Cairo installed. I may be going out of line here, but did you library(Cairo)?
– Roman Luštrik
                Feb 2, 2011 at 11:24
locale:
 [1] LC_CTYPE=af_ZA.utf8       LC_NUMERIC=C             
 [3] LC_TIME=af_ZA.utf8        LC_COLLATE=af_ZA.utf8    
 [5] LC_MONETARY=C             LC_MESSAGES=af_ZA.utf8   
 [7] LC_PAPER=af_ZA.utf8       LC_NAME=C                
 [9] LC_ADDRESS=C              LC_TELEPHONE=C           
 [11] LC_MEASUREMENT=af_ZA.utf8 LC_IDENTIFICATION=C      
attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     
Then run library(Cairo), if this is not installed
  
library(Cairo)

      Error in library(Cairo) : there is no package called 'Cairo'
This means you will have to install the Cairo R package, which interfaces with the Cairo graphics system
> install.packages('Cairo')
It will download, build and install the package - you don't need root for this
If it was successful, you can run 
>library(Cairo)
>sessionInfo()
R version 2.12.1 (2010-12-16)<br>
Platform: i486-pc-linux-gnu (32-bit)
locale:
 [1] LC_CTYPE=af_ZA.utf8       LC_NUMERIC=C             
 [3] LC_TIME=af_ZA.utf8        LC_COLLATE=af_ZA.utf8    
 [5] LC_MONETARY=C             LC_MESSAGES=af_ZA.utf8   
 [7] LC_PAPER=af_ZA.utf8       LC_NAME=C                
 [9] LC_ADDRESS=C              LC_TELEPHONE=C           
 [11] LC_MEASUREMENT=af_ZA.utf8 LC_IDENTIFICATION=C      
attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     
other attached packages:
[1] Cairo_1.4-5
        
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