[R] plot question

[Marc Schwartz]

On Thu, 2005-03-03 at 17:29 +0100, Christoph Lehmann wrote:
> I have the following simple situation:
> 
> tt <- data.frame(c(0.5, 1, 0.5))
> names(tt) <- "a"
> plot(tt$a, type = 'o')
> 
> gives the following plot ('I' and '.' represent the axis):
> 
> I
> I
> I     X
> I
> I
> I X       X
> I...........
>    1   2   3
> 
> what do I have to change to get the following:
> 
> 
> I
> I
> I          X
> I
> I
> I      X       X
> I.....................
>         1   2   3
> 
> i.e. the plot-region should be widened at the left and right side
> 
> thanks for a hint


Use 'xlim' to specify the range of the x axis:

plot(c(0.5, 1, 0.5), type = 'o', xlim = c(0, 4))

See ?par for more information.

HTH,

Marc Schwartz