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)?