I'm looking at using REngine which provide a wrapper for using R from an
Objective-C/Cocoa program. I checked out the branch from the packages
repository. I'm currently running Mac OS X 10.7.4 with Xcode 4 and the
default compiler. The compiler reports one use of a deprecated function and
I fixed that, I think. I also get 8 warning messages like this:

<Incompatible pointer types assigning to 'void (*)(const char *)' from
'void (char *)'>
such as for the line

    ptr_R_ShowMessage = Re_ShowMessage;
in Rinit.m.
It appears these warning messages can safely be ignored. Is that a safe
assumption?

I also wonder if REngine will give me all the functionality of R. In
particular, I want to be able to display graphical output from R in a View.
Being new at this I'm still studying how this all will work. Can I use
Quartz or do I need X11? Is there some demo program that provides some
example of how I might do this?

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