R help - Oct 2011 - plot: how to fix the ratio of the plot box?

Dear all,

this should be trivial, but I couldn't figure out how to solve it... I would
like to have a plot with fixed aspect ratio of 1. Whenever I resize the Quartz
window, the axes are extended so that the plot fills the whole window. However,
if you have different extensions for the different axes, the plot does not look 
like "a square" anymore (i.e., aspect ratio 1). The same of course
happens if you print it to .pdf (ultimate goal). How can I fix the plot box
(formed by the axes) ratio to be 1, meaning that the plot box is a square no
matter how I resize the Quartz window?

I searched for this and found:
http://tolstoy.newcastle.edu.au/R/help/05/04/2888.html
It is more or less recommended to use lattice's xyplot for that. Is there no
solution for base graphics?
[I know that the extension is by default 4% and that's great, but the the
size of the Quartz window should not change this (which it does if you resize
the window accordingly)].

Cheers,

Marius

Minimal example:
u <- runif(10)
pdf(width=5, height=5)
plot(u, u, asp=1, xlim=c(0,1), ylim=c(0,1), main="My title")
dev.off()

On 10/02/2011 07:20 PM, Hofert Jan Marius wrote:
> Dear all,
>
> this should be trivial, but I couldn't figure out how to solve it... I
would like to have a plot with fixed aspect ratio of 1. Whenever I resize the
Quartz window, the axes are extended so that the plot fills the whole window.
However, if you have different extensions for the different axes, the plot does
not look  like "a square" anymore (i.e., aspect ratio 1). The same of
course happens if you print it to .pdf (ultimate goal). How can I fix the plot
box (formed by the axes) ratio to be 1, meaning that the plot box is a square no
matter how I resize the Quartz window?
>
> I searched for this and found:
http://tolstoy.newcastle.edu.au/R/help/05/04/2888.html
> It is more or less recommended to use lattice's xyplot for that. Is
there no solution for base graphics?
> [I know that the extension is by default 4% and that's great, but the
the size of the Quartz window should not change this (which it does if you
resize the window accordingly)].
>
> Cheers,
>
> Marius
>
> Minimal example:
> u<- runif(10)
> pdf(width=5, height=5)
> plot(u, u, asp=1, xlim=c(0,1), ylim=c(0,1), main="My title")
> dev.off()
>
Hi Marius,
Have you tried:

par(pty="s")

after you open the device and before plotting?

Jim