I'm trying to create a graph using plot() with an axis that I  
essentially want to plot the categories in the reverse alphanumeric  
order - opposite of the typical R fashion. Is there a function to do  
this?
In other words, I have categories "a", "c", "g", "z" which is the  
order they'll be plotted, but I want to plot them as "z", "g","c","a".
Thanks,
Louise


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