Plotting problem

["Gupta, Pankaj*" <GuptaP@cder.fda.gov>]

Dear users,
I would appreciate your input on the following:

I have a data set containing an independent variable that is continuous and columns of dependent variables each of which is of the class-factor. I wish to split my independent variable observations into n equal sized bins and plot the corresponding y values for that particular bin. Using 'hist' to implement this gives me an error. 

What is the best way to do this?

Thanks

Pankaj