[R] caption needed for boxplot

[Neha gupta]

Hi
I have a boxplot using the following code and I get the boxplots, but at
the x axis, instead of 1,2,3, how can I get my own captions like , random,
grid, genetic, pso etc.

a=ran_CV$results$MAE
aa=grid_CV$results$MAE
b=ran_boot$results$MAE
bb=grid_boot$results$MAE
c=ran_locv$results$MAE
cc=grid_locv$results$MAE
e=ran_5CV$results$MAE
dd=grid_5CV$results$MAE

boxplot(a,aa,b,bb,c,cc,e,dd, col="Green")

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