Message-ID: <20040122191240.GA1815@sonny.eddelbuettel.com>
Date: 2004-01-22T19:12:40Z
From: Dirk Eddelbuettel
Subject: Axes Ticks
In-Reply-To: <4010173D.9040509@yale.edu>
On Thu, Jan 22, 2004 at 01:32:29PM -0500, ivo welch wrote:
>
> Apologies, basic question on plot.
>
> y <- c(-4,3,-2,1);
> x <- c("time 1", "time 2", "time 3", "time 4");
> plot(x,y, type="b");
>
> of course fails.
> x <- 1:4
> makes it succeed, but then I have too many ticks on my X axis. I want
> exactly 4 tickmarks. It would also be nicer if I could name the ticks.
>
> I looked at ?par and Venables&Ripley, and tried the lab and xaxp
> parameters. I could not figure out how to use them productively. could
> someone please let me know? help appreciated. /iaw
y <- c(-4,3,-2,1)
xlab <- c("time 1", "time 2", "time 3", "time 4")
x <-1:4
plot(x,y, type="b", axes=FALSE)
axis(2)
axis(1, at=x, labels=xlab)
box()
If you use 'axis(1, at=x)' you can do without xlab, but get only the bare
numbers. box() is needed to frame the whole thing as the default axes=TRUE
for plot() does.
Gruss, Dirk
--
The relationship between the computed price and reality is as yet unknown.
-- From the pac(8) manual page