unmet dependency for r-cran-r2jags

The package r-cran-r2jags does not appear to exist in any Ubuntu release, so I am guessing that it is provided by an unofficial, third-party software source. Assuming you have recently updated your local package information (one way to do this is to run the command "sudo apt-get update" in the Terminal), the problem is probably with that third-party software source. You should notify the third-party package maintainer of this problem. If you need help figuring out what software source provides the package (perhaps this will also help you to troubleshoot the problem and arrive at a solution), then please open a Terminal window (Ctrl+Alt+T) and run these commands, by copying each one from here and pasting it into the Terminal, then pressing enter, and waiting for each command to complete before running the next one:

lsb_release -a
apt-cache policy r-cran-r2jags r-cran-r2winbugs
apt-get -s install r-cran-r2winbugs
cat /etc/apt/sources.list
for X in /etc/apt/sources.list.d/*; do echo "** $X:"; echo; cat $X; echo; echo; done

There are five commands in total, so if you see six lines, then the last one has been split into two lines. If that is the case, then you won't be able to copy it correctly from your email, but it will copy correctly from https://answers.launchpad.net/ubuntu/+source/rcmdr/+question/166731.

After you run all those commands, then select all the text in the Terminal (Edit > Select All), copy it to the clipboard (Edit > Copy), and paste it here.

r2winbugs 2.1-18-1cran1natty0 is available in ppa:marutter/c2d4u see https://launchpad.net/~marutter/+archive/c2d4u
Maybe that is what you need.