Plotting pairs of bars

Jim and all,

Thanks for the suggestion, however, I get the following error:

  

barplot(t(combine86[,1:2], beside = TRUE, las = 1))
    

Error in t(combine86[, 1:2], beside = TRUE, las = 1) : 
  unused argument(s) (beside = TRUE, las = 1)

I've looked up ?t and cannot see any extra arguments that I should be including, and the executes without the 't'.

What is it that I've omitted that I need to successfully execute the code (as previously described)?