[R] x-axis tick marks on log scale plot

[Ivan Calandra]

Hi,

You can do it by first plotting your values without the x-axis:
plot(x,y,log="xy", xaxt="n")

and then plotting the x-axis with ticks where you need to:
axis(side=1, at=seq(2000,8000,1000))

HTH,
Ivan

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Ivan Calandra, PhD
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Le 19/05/2016 à 15:40, Brian Smith a écrit :
> Hi,
>
> I have a plot with log scale on the axes. How do I add ticks and labels in
> addition to the ones provided by default? Can I specify where I want the
> ticks and labels?
>
> For example:
>
> set.seed(12345)
> x <- sample(1:10000,10)
> y <- sample(1:10000,10)
>
> plot(x,y,log="xy")
>
>
> For me, this plot has tick marks (and labels) at 2000, 4000, 6000, 8000.
> How can I make the axes so that it has marks and labels at 1000 intervals
> (i.e. 2000, 3000, 4000, etc.)
>
> thanks!
>
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