On 8/17/2011 11:29 AM, mkzo...@comcast.net wrote:
I'm trying to create a dotplot with some grouping.
I've been able to create what I want using dotchart (basic
graphics), but can't quite get it using dotplot (lattice). I prefer
to use lattice (or ggplot2) because I think it's a bit easier to
control some other aspects of the plot appearance.
Basically, w/ lattice I've not been able to get the y-axis label to
include the group variable.
I'd like...
A
1
2
B
1
2
3
4
C
1
2
3
I'm getting...
1
2
1
2
3
4
1
2
3
The following example code illustrates....
set.seed(18)
dta<- data.frame(var1=factor(c("A", "A", "B", "B", "B", "B", "C", "C", "C")),
var2=c(1,2,1,2,3,4,1,2,3),
var3=round(runif(9,1,10),1),
plotorder=9:1)
dta
windows(3,3)
dotchart(dta$var3[order(dta$var1, -dta$var2)], groups=dta$var1,
labels=dta$var2[order(dta$var1, -dta$var2)], cex=.75,
gcolor=c("blue", "red", "dark green"),
col=c(rep("blue",2), rep("red",4), rep("dark green",3)),
axes=NULL)
windows(3,3)
dotplot(data=dta, plotorder~var3, groups=var1, col=c("blue", "red", "dark
green"),
scales=list(y=list(labels=dta$var2[order(dta$plotorder)])))
Something similar (though still not what you wanted) using ggplot would be:
dev.new(width=3,height=3)
ggplot(dta, aes(x=var3, y=var2)) +
geom_point() +
scale_y_reverse(breaks=1:4, expand=c(0,0.5)) +
facet_grid(var1~., scales="free", space="free") +
theme_bw()
Thanks.
Marc
R 2.13.0 (2011-04-13)
Windows XP
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--
Brian S. Diggs, PhD
Senior Research Associate, Department of Surgery
Oregon Health & Science University
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