R help - Oct 2007 - Changing steps on a graphic axes

Hi,

I would like to tell R what increments to put the tick marks on an 
axes, e.g. xlim=seq(-5,5,1).

I know that will not work.  xlim will only except the beginning and 
end of the range for the axes.

Thanks,

Keith jones

On Thu, 25 Oct 2007, Keith Jones wrote:
> I would like to tell R what increments to put the tick marks on an
> axes, e.g. xlim=seq(-5,5,1).
>
> I know that will not work.  xlim will only except the beginning and
> end of the range for the axes.
Consult the rest of ?par, especially 'xaxp' and 'lab'.  You may
find it
easier to omit the axis (see 'xaxt') and plot it yourself with axis().

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

Is this what you want 

Have a look at ?par and ?axis (note the las=1 is just
to rotate the letters)
-----------------------------------------------
aa <- 1:5
plot(aa, yaxt='n')
axis(2, at=1:5,
c("a","b","c","d","e"), las
=1)
aa <- 1:5
plot(aa, yaxt='n')
axis(2, at=1:5,
c("a","b","c","d","e"))

---------------------------------------------

--- Keith Jones <keithlj at suddenlink.net> wrote:
> Hi,
> 
> I would like to tell R what increments to put the
> tick marks on an 
> axes, e.g. xlim=seq(-5,5,1).
> 
> I know that will not work.  xlim will only except
> the beginning and 
> end of the range for the axes.
> 
> Thanks,
> 
> Keith jones
> 
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