Hey Everyone,

I'm using Ubuntu and used the Ubuntu Software Center to put R on my computer (version 2.10.1).  It has been working great for what I've needed it for.  However, I think now that I need a newer version so that a particular function in a new script I'd like to use can be found: rasterImage.  My basic question is how do I upgrade from 2.10.1 to 2.12.0?  The problems I'm running into include not having permission to change /usr/lib/R and not knowing how to specify a different version of R to be used when I've installed and compiled the newer version somewhere else on my computer (say in my home folder).  Any help would be greatly appreciated.  

Thanks,
Ben

PS: I also installed the "png" package and that did not seem to fix it.

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