[R] axis scale issues....

[jim holtman]

Not sure exactly what you want, but does using 'ylim' do what you want:

plot(1:5, sample(100:200,5), type='b', ylim=c(0,450))


On Tue, Sep 29, 2009 at 12:08 PM, chipmaney <chipmaney at hotmail.com> wrote:
>
> I have read all the help on axis scales, which seems to be much harder to
> deal with than it should be, given how common the need to alter axes.
> Anyway....yeah, suppress the axis using yaxt then call and define the new
> scale using axis().
>
> The problem is, this doesn't change the actual axis, only the text.
> Example:
>
> plot(1:length(TreeDensity.df$Description[which(TreeDensity.df$Description ==
> Zone.df[i])]),TreeDensity.df$CumMeanTree[which(TreeDensity.df$Description ==
> Zone.df[i])],
>                type = "b", sub=Zone.df[i],xlab="Sample Size",ylab = "Tree Density",
> yaxt="n")
>
>                axis(side = 2, xpd=FALSE, at = pretty(range(0,450)) )
>
> This code produces the following plot:
>
> http://www.nabble.com/file/p25665902/Presentation1.jpg
>
>
> Note that while the scale of the axis TEXT has changed, the actual axis
> scale hasn't, it still ranges across the value of the data....That is, the
> ranges 0...~100 and ~200....450 do not appear on the plot.
>
> One could say that the axis scale has changed, but part of the axis isn't
> showing up, so one could use xpd to suppress clipping....However, then the
> axis either runs off the device window or something, like the following
> plot:
>
> http://www.nabble.com/file/p25665902/Presentation2.jpg
>
> So, what I really want to do is not the change both the range (to 0...450)
> AND scale (ie, shrink the length of the range(0,450) to fit the existing
> plot dimensions) of the axis.  Any suggestion on how to accomplish this?
>
> Thanks in advance...
> --
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> Sent from the R help mailing list archive at Nabble.com.
>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?