Bar Charts

I've been trying to work through the examples in Chapter 2 of the R book and when using the barplot() function I never get any sort of graph. in the first examples there are three bar graphs shown as a result of all the data entered into the prompts, but I get no such images. Is this because I'm using R on the treat server or because I have to enter an additional command into the prompt? As this won't likely be important until thursday I guess I'll have the oppurtunity to ask about it in class.

First Post

Ok, so this is the first post for my Biostats blog. I hope the information provided will be useful or, at the very least not boring.