[R] Lattice Plot formatting problem/s

[Peter Ehlers]

fishman wrote:
> Hi
> I am having difficulty getting the right format for a lattice plot I am
> trying to produce.
> 
> Here is a pic of the plot as I get it now
> http://i235.photobucket.com/albums/ee37/scotrivers/lattice_plot01.jpg
> 
> and here is the code I am using:
> 
> RN<-read.csv("N:/data.dat",header=T)
> DATA<-RN[is.element(RN$age,0:3),]  #select data on age
> ogmod1<-glm(mig~age+length,family=binomial(link="logit"),data=DATA)
> design1<-expand.grid(age=c(0:3),length=seq(30,300,by=10))
> design1$pbs<-predict(ogmod1,new=design1,type="response")
> design1$migr<-round(design1$pbs)
> library(lattice)
> wireframe(pbs~age*length,data=design1,aspect=c(1,1),main="Probability
> Surface",
>           drape=T,scale=list(arrows=FALSE),screen=list(z=45,x=-75),
>           colorkey=list(space="right",height=0.6),xlab="Age",ylab="Length
> (mm)",zlab="Probability")
> 
> I have a number of problems:
> 1. the Z-axis label goes off the edge of the plotting area, I need to move
> the plot to the right somehow, but can't find a way to do this (tried
> various margin settings)
Or rotate the z-label; see below.

> 2. I would like the Z scale to read from 0 to 1.0 with intervals of 0.2, at
> the moment there is no 0 or 1.0 on the scale
Use the 'scales' argument; see below.

> 3. I would like the X-axis tick marks to just be 0, 1, 2 & 3. At the moment
> they go up in 0.5 intervals rather than 1.0
Use the 'scales' argument;

You don't provide reproducible code, so here's an example
from ?wireframe; it should give you the idea:

library(lattice)
wireframe(volcano, shade = FALSE,
   zlim=c(100,200),  ##modify the z-axis limits
   zlab=list("long_z_label", rot=90),  ##print z-label parallel
   scales=list(
      arrows=FALSE,
      z=list(at=c(100,150,200)),  ##where to put ticks and labels
      x=list(at=c(10,50,70))))

  -Peter Ehlers

> 
> I have been searching round for ages for info on these problems, so I hope
> some kind person can help.
> Thanks

-- 
Peter Ehlers
University of Calgary
403.202.3921