[R] How to change min and max of plot axis
murdoch at stats.uwo.ca
Sat Jun 21 17:32:01 CEST 2008
On 21/06/2008 11:25 AM, Luis Orlindo Tedeschi wrote:
> All; this might be an easy question but I cannot make it work. I would
> like to set the min and max of the y axis of a plot. I know I have to
> use par("usr"), but after I do the plot() the axis values get changed.
> # let's say I have -2.8 1.15 -2.8 1.16 for par("usr")
> # let's say I need to change the Y-axis to be -5 to 5
> # it does not take the -5 to 5???
> Is there any way to set the axis values?
plot() will set up the coordinate system. You can use the ylim argument
to set the limits, e.g.
plot(y, x, ylim=c(-5,5))
(This is a little confusing, since the y variable ends up on the x axis
and vice versa: the convention in R is plot(x, y).)
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