[R] 'par mfrow' and not filling horizontally
Marc Schwartz
marc_schwartz at me.com
Wed Sep 8 21:12:45 CEST 2010
On Sep 8, 2010, at 2:01 PM, Ted Harding wrote:
> Greetings, Folks.
> I'd appreciate being shown the way out of this one!
> I've been round the documentation in ever-drecreasing
> circles, and along other paths, without stumbling on
> the answer.
>
> The background to the question can be exemplified by
> the example (no graphics window open to start with):
>
> set.seed(54321)
> X0 <- rnorm(50) ; Y0 <- rnorm(50)
>
> par(mfrow=c(2,1),mfg=c(1,1),cex=0.5)
> plot(X0,Y0,pch="+",col="blue",xlim=c(-3,3),ylim=c(-3,3),
> xlab="X",ylab="Y",main="My Plot",asp=1)
>
> par(mfg=c(2,1))
> plot(X0,Y0,pch="+",col="blue",xlim=c(-3,3),ylim=c(-3,3),
> xlab="X",ylab="Y",main="My Plot",asp=1)
>
> As you will see, both plots have been extended laterally
> to fill the plotting area horizontally, hence extend from
> approx X = -8 to approx X = +8 (on my X11 display), despite
> the xlim=c(-3,3); however, the "ylim=c(-3,3)" has been
> respected, as has "asp=1".
>
> What I would like to see, independently of the shape of
> the graphics window, is a pair of square plots, each with
> X and Y ranging from -3 to 3, even if this leaves empty
> space in the graphics window on either side.
>
> Hints?
>
> With thanks,
> Ted.
Ted,
Try this:
set.seed(54321)
X0 <- rnorm(50) ; Y0 <- rnorm(50)
# add pty = "s"
par(mfrow=c(2, 1), mfg = c(1, 1), cex = 0.5,
pty = "s")
plot(X0, Y0, pch = "+", col = "blue",
xlim = c(-3, 3), ylim = c(-3, 3),
xlab = "X", ylab = "Y", main = "My Plot",
asp = 1)
par(mfg = c(2, 1))
plot(X0, Y0, pch = "+", col = "blue",
xlim= c(-3, 3), ylim = c(-3, 3),
xlab = "X", ylab = "Y", main = "My Plot",
asp = 1)
See ?par and 'pty', which defaults to "m".
HTH,
Marc Schwartz
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