
Hello,I have used Matthew's method to install 64 bit R on Leopard (http://www.matthewckeller.com/html/64_bit_r_on_mac.html) and from the command line in the terminal program both 32 bit (command "R") and 64 bit (command "R --arch=x86_64") R seem to work.  My question concerns the R GUI.  The page http://r.research.att.com/building.html indicates that "Leopard supports 64-bit throughout, including in the R GUI".  The GUI downloaded from http://r.research.att.com/ opens 32 bit R, but I have not been able to get the GUI to open 64 bit R.  Please tell me what I am missing.  Does the GUI need to be recompiled, is there a configuration that needs to be set, or have I misunderstood the statement "64-bit throughout, including in the R GUI".R is installed on a Mac Pro with Quad-Core Intel Xeon processors and Mac OS X 10.5.4 operating system. Thank you,Kurt Newman       
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