A function for adding error bars to barplots

This function is a wrap around for barplot() that will add error bars. This code was written by Dr. Mike Hammond at the U of A.

eb(dv, fac, ...)

Arguments

dv	Numeric vector.
fac	Factors.
...	Elipsis for passing arguements

Examples

eb(mtcars$mpg, as.factor(mtcars$cyl), ylab = "Miles per gallon", xlab = "cyl")