R help - Mar 2008 - How to change symbols in a trellis graph (UNCLASSIFIED)

Classification:  UNCLASSIFIED 
Caveats: NONE

Hello, R Users,

I created a trellis graph following methods suggest in "Mixed-Effects
Models
in S and S-Plus" by Bates and Pinheiro using 'groupedData' and
'outer'
commands as follows:

1. data2<-groupedData(LCU~ST1|Blcok, data=data1)
2. plot(data2, outer=~SURF).

This produced exactly what I wanted except that the symbol. I want four
different symbols for the four levels of ST1 instead of just one circle, and
how I do this if I want to use four symbol numbers c(1,2,5,6). The data are
given below.

Appreciate your help.

Kyong

       LCU ST1 SURF Block
> 1  6.71   A    N     1
> 2  6.97   A    Y     1
> 3  6.77   B    N     1
> 4  6.90   B    Y     1
> 5  6.63   C    N     1
> 6  6.94   C    Y     1
> 7  6.79   D    N     1
> 8  6.93   D    Y     1
> 9  6.23   A    N     2
> 10 6.83   A    Y     2
> 11 6.61   B    N     2
> 12 6.86   B    Y     2
> 13 6.51   C    N     2
> 14 6.90   C    Y     2
> 15 5.90   D    N     2
> 16 6.97   D    Y     2
Classification:  UNCLASSIFIED 
Caveats: NONE


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