R help - Jan 2003 - Question about trellis graphs

Dear List Members

I'm using R to create a trellis plot using the library of Pinheiro &
Bates
(trellis graph for grouped data). Here is my question: How can I change the
format of the axis (x or y) in terms of the number decimal points that
should appear on the plot? In other words, I have that for a set of plots in
the y-axis the values appear as 0.2,0.3, etc and for another set they appear
as 0.20,0.30 etc and I want both to look identical.

Thanks for any hint

Christian

________________________________

Christian R. Mora
MS Student - Department of Forestry
North Carolina State University
e-mail: crmora at unity.ncsu.edu

Christian,

The scales argument of lattice plots achieve this.
For instance you could have
   xyplot(y ~ x, data=my.data, scales=list(x=list(at=c(0, 0.1, 0.2), 
          labels=c("0.0", "0.1", "0.2"))))

Check out ?xyplot for a lot more detail on this
and other arguments to lattice functions.



Regards,

Andrew C. Ward

CAPE Centre
Department of Chemical Engineering
The University of Queensland
Brisbane Qld 4072 Australia
andreww at cheque.uq.edu.au



Quoting cmorab at bellsouth.net:
> Dear List Members
> 
> I'm using R to create a trellis plot using the library of Pinheiro
& Bates
> (trellis graph for grouped data). Here is my question: How can I change the
> format of the axis (x or y) in terms of the number decimal points that
> should appear on the plot? In other words, I have that for a set of plots
in
> the y-axis the values appear as 0.2,0.3, etc and for another set they
appear
> as 0.20,0.30 etc and I want both to look identical.
> 
> Thanks for any hint
> 
> Christian
> 
> ________________________________
> 
> Christian R. Mora
> MS Student - Department of Forestry
> North Carolina State University
> e-mail: crmora at unity.ncsu.edu
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> http://www.stat.math.ethz.ch/mailman/listinfo/r-help
>