Re: [R] how to control ticks in plots with yasp or xasp

From: Denis Chabot <>
Date: Sun 09 Oct 2005 - 03:36:48 EST

Hi Brian,
Le 05-10-08 à 13:21, Prof Brian Ripley a écrit :

> On Sat, 8 Oct 2005, Denis Chabot wrote:
>> Hi, sorry about the bad syntax, though the right syntax would not
>> have worked either, according to your tests (Mark, Brian, Peter).
> It DOES work according to my tests! (Do give us the credit for
> testing our advice: we would appreciate your showing equal care.)

I am very sorry, I did not express myself properly. I do appreciate your help, and I did take the time to test your solution. What I meant was that even if I had use the proper syntax, i.e. yaxp=c (10,100,10) instead of y=(10,100,10) [actually in my program I had used it but I was careless when I composed the message], it would not have worked because you demonstrated that it has to be used within a "par" statement, which I had not done. Therefore my attempt was doomed. I did not mean there was no way to make yaxp work, so I apologize if you think I take your advice lightly, and I cannot state strongly enough that it is not the case at all.
>> Anyway it is too finicky, I will draw them myself. For instance,
>> plot(1:100, xaxt="n")
>> par(xaxp=c(0, 100, 10)) # the value is reset at each plot
>> axis(1)
>> Placed tick marks at intervals at 0, 10, ..., 100, as expected,
>> but did not place a label under 100...
> Does for me (2.2.0, Windows and X11 on Linux). Might the text be
> clipped on your unnamed device, so you need to set xpd? (If so, it
> will be clipped however you try to do this, and is an unrelated
> local problem.)
This is strange.

I work on Mac OS X, so the default device is quartz. Label 100 is shown without clipping if plot without changing xaxp. But just in case I made more space at the right of the graph with

par(mai=c(0.7, 0.7, 0.5, 0.5))
plot(1:100, xaxt="n")
par(xaxp=c(0, 100, 10)) # the value is reset at each plot axis(1)

and the 100 does not appear. If I run this again: plot(1:100, xaxt="n")

I'm back with R's default axis and the 100 is present. Anyone on a Mac wants to try?


> --
> Brian D. Ripley,
> Professor of Applied Statistics,
> University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UK Fax: +44 1865 272595
> mailing list PLEASE do read the posting guide! Received on Sun Oct 09 04:11:18 2005

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