[R] Barplot difficulties

[Frank E Harrell Jr]

Heather J. Branton wrote:
> Hello. I am an R newbie struggling to learn and use R . I have read many 
> portions of the R Reference Manual, as well as the FAQs. Given that I 
> learn something new each time, I know I might be missing something 
> obvious. But I appeal to your good nature to help me through this 
> initial problem.
> 
> I have attached a pdf file to demonstrate what I desire and have listed 
> what my data looks like in Excel (below). Following is the data and 
> script I developed - which does not provide what I want.

....

Dear Heather - Please read Bill Cleveland's book The Elements of 
Graphing Data.  A MUCH better plot can be produced.  And let time be one 
of the first variables to vary.



-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University