I am running a loop which updates a plot after carrying out some  
calculations (i.e., calculating 2 integrals along a line defined in a  
PCA space).  However, I am having trouble visualizing the plot for  
this loop using R 2.9.1 (OS 10.5.8, MBP 2.53 Ghz Core Duo, 4GB) as it  
does not go smoothly as it should.  When I run the loop in a PC, the  
plot updates nicely and continuously. When I run it in my Mac, the  
plot just flashes and it seems as if it is getting re-drawn from  
scratch at every step of the loop.  Has anybody experienced a similar  
problem in your Mac?? i wonder if this is a general mac issue or  
something specific to my computer.
Thanks

F
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