[R] equal horizontal and vertical proportions in graphics

Carl Witthoft carl at witthoft.com
Tue Nov 19 13:15:55 CET 2013

 see ?par .  Use the argument  asp=TRUE.

Mercutio Florid wrote
> I use several different versions of R, including RGui on Windows and
> rstudio on Linux.  In all cases, I use graphical commands, such as
> image().  
> image() displays rectangles, but I want to be able to guarantee that the
> heights of those rectangles will always equal the widths.  Typically, the
> rectangles come out with notable asymmetries.
> Thus, if I need to draw a perfect circle with square pixels, I usually get
> a squashed ellipse with oblong pixels.
> I have experimented with other commands, and I don't need to continue to
> use image() if some other command would be more suitable.
> Thanks.
> 	[[alternative HTML version deleted]]
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