I'm using xyplot in a very simple way---a scatter plot of several data  
sets.  I'm having a problem getting auto.key to display different  
point characters.

The following produces a plot that employes different colors, all with  
pch(1), for the different groups, with a matching key.

xyplot(Force~Time, rawData, groups=Sample, panel = panel.superpose,  
auto.key=TRUE)


The following produces a plot that employs different symbols (and  
colors) for the groups, but the key still uses pch(1) for all groups.   
I assume I need to set some more general option, but haven't found it  
yet.

xyplot(Force~Time, rawData, groups=Sample, pch=0:18, panel =  
panel.superpose, auto.key=list(space="right", pch=0:18))


What I would really like is a plot with different symbols, all with  
black color.  The following works for the plot, but again has no  
effect on the key.

xyplot(Force~Time, rawData, groups=Sample, pch=0:18, col="black",  
panel = panel.superpose, auto.key=list(space="right", pch=0:18))


Thanks,

Steve Kennedy


Stephen J. Kennedy, Ph.D.
Consulting
Contract Research & Development
PLEASE NOTE: NEW EMAIL ADDRESS
StephenJKennedy@myfairpoint.net


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