[R] Bar Chart

[Philipp Pagel]

> How do you do a bar chart of 2 vectors?
> I have one vector which has 10 numbers, and another which has 10 names.
> The numbers are the frequency of the corresponding name, but when I do a bar
> chart it says that there is no height. Thanks. 

The first thing we'd need to know is HOW you tried to create the bar
chart. R usually offer quite a lot different ways to tackle a problem
so knowing what exactly you did helps a lot in helping. 

That said, I'll assume you tried the barplot() command which would
work e.g. like this:

v1 <- 1:3
v2 <- c('A', 'B', 'B')
barplot(v1, names.arg=v2)

If v1 is a named vector things are even easier:

names(v1) <- v2
barplot(v1)

As I said, there are a bunch of other ways - e.g. using the lattice function 
barchart() which works a bit differently.

cu
	Philipp

-- 
Dr. Philipp Pagel
Lehrstuhl für Genomorientierte Bioinformatik
Technische Universität München
Wissenschaftszentrum Weihenstephan
Maximus-von-Imhof-Forum 3
85354 Freising, Germany
http://webclu.bio.wzw.tum.de/~pagel/