[R] Stripplot - multiple plotting characters

[Philip.Tennant@nre.vic.gov.au]

Hello

I'm using R 1.2.1 on Windows.

I can't understand how to set up two different plotting
characters within a stripplot graph.  I would use plot(),
but I want to use the 'stacking' option in stripplot as the
overplotting is quite severe:

patch <- factor(rep(c("S", "M", "B"), c(7, 7, 7)))
struc <- c(4,6,6,8,8,8,12,4,6,6,6,8,10,10,6,6,6,8,8,8,8)
occur <- c(0,0,0,1,1,0,1,0,0,1,0,0,1,0,0,0,1,1,1,1,0)
woods <- data.frame(patch, struc, occur)

woods$sym <- woods$occur
woods$sym[woods$sym==1] <- 16 ; woods$sym[woods$sym==0] <- 1

attach(woods)
stripplot(struc~patch, method = "stack", pch = as.integer(sym))


I wanted the above code to give both open and filled circles in the
plot. I thought pg.84 from V&R3 may help me, (with the associated 'R
Complements'), but I am unable to understand how to adapt it.

Will summarise for the list if responses come directly.

Many thanks in advance.

Philip Tennant


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