Aspect ratio and limits
On Tuesday 19 April 2005 11:40, Barry Rowlingson wrote:
Marc Schwartz wrote:
# Set height value as you require height <- 3 X11(width = aspect * height, height = height) .... Does that get you what you need?
I'm guessing that will work, but it just seems unsatisfactory, since if I resize my graphics window I mess it up. If I set par(pty='s') I can have a square plot floating inside a graphics window of any shape, I'd like to be able to plot something specifying ylim and asp and get a rectangular plot with a fixed aspect ratio floating around inside a resizable graphics device.... The 'aspect' ratio of xyplot (lattice package) lets you specify the aspect ratio of the plot (not relating to the data, ie aspect=1 draws a square plot whatever the ratio of X and Y range). Try this: xy=data.frame(x=c(0,21),y=c(0,4)) xyplot(y~x,data=xy,aspect=0.2) - now resize the graphics window and the plot keeps its ratio. That's the effect I was hoping to get from base graphics. I could use lattice graphics but I'd have to work out the value of 'aspect' to get the 1:1 aspect ratio for my data. I'm not sure this is trivial, since it may involve considering the various margins and spacing around a plot.
Try (with a sufficiently recent version of R) xyplot(y~x, data=xy, aspect="iso") Is that what you want? Deepayan