Laurent Jourdren wrote: >>I am a grad student and am working on a project where i need to integrate >>java and R. I have a front end in java and i need to call R functions and >>be able to dispaly the plots and graphs produced by R on my java front end. >>I came across some tools like SJava and rserve...but am not sure which best >>suits my application. Your suggestion will be really helpful. > > > > The only valuable choice to integrate java and R is rserve. > > With RSjava, data don't persist between 2 two commands, so you can't > set a > variable in R from java in one instruction and re-use this data in the next > instruction.
Unfortunately, this is simply not correct. Objects don't persist in the global namespace between commands. The computational model does not use R variables in the global environment because that is well-established as a poor approach to software engineering and programming. Unfortunately it is the approach most inter-system interfaces have taken and that many users expect. SJava has a much more flexible computational model that allows the use of references in the local language to objects in the foreign system. And this allows one, for example, to pass R functions as Java methods, e.g for use in an optimizer implemented in Java but the function to be optimized being written in R. Rserve has a different, more traditional computational model for distributed computing. > > Rserve is an client/server library, client is pure java (you can easily > deploy it on *nix and Windows) and each connection has its own object space > in R (only under *nix). > > Laurent. > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
