I did some research and didn't find what I was looking for: I have a data set x = 10,100,1000 and y1, y2, y3 respectively, and I want to plot those points.

But what is happening is that in the x axis the values that are appearing are 10, 200, 400, 600, 800 and 1000. How can I set the scale so that it only appears the values I specified above? What I'm doing is:

y_values <- c(9, 9.6, 9.7, 9.8)
x_values <- c(10,100,1000)
plot(x_values, y_values)

Thank you.


closed as off-topic by gung, Peter Flom Mar 4 '14 at 0:01

  • This question does not appear to be about statistics within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 2
    $\begingroup$ Have you noticed that you have 4 y_values, but only 3 x_values? $\endgroup$ – gung Mar 3 '14 at 23:35
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    $\begingroup$ The way to do this is explained here. $\endgroup$ – gung Mar 3 '14 at 23:40
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    $\begingroup$ Since this question is only about how to do this in R, it is off-topic for CV (see our help center). For future reference, this Q could be on-topic on Stack Overflow, however, it will be off-topic there as well, since the answer already exists (as noted above). $\endgroup$ – gung Mar 3 '14 at 23:42
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    $\begingroup$ This question appears to be off-topic because it is about how to use software. $\endgroup$ – gung Mar 3 '14 at 23:42

You'll want to set axes=F, in the plot, the use the low-level axis function:

plot(x_values, y_values, axes=F)
axis(1, at=x_values, labels=as.character(x_values))

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