On 11/08/2012 11:48 PM, DusanP wrote:
Sorry to bother you again,
But I have two other questions :
1. How do I change symbols (dots) for each group?
I tried :
For group 1, n=5.
points(x=groups[1:5],y=data[1:5],type=pch). The issue is that it doesn't
select the right points, or coordinates.
2. How can I increase horizontal spacing between dots from the same group
which are at the same vertical level? I have
some overlapping values for replicates.
I tried to modify "intervals" and "offset" but it doesn't work.
Hi Dusan,
Your first two questions are relatively easy:
library(plotrix)
data(iris)
ehplot(iris$Sepal.Length, iris$Species, intervals=20,
cex=1.8, pch=4,median=FALSE)
irismeans<-as.vector(by(iris$Sepal.Length,iris$Species,
FUN=mean))
segments(c(0.7,1.7,2.7),irismeans,c(1.3,2.3,3.3),irismeans)
For your third question (number 2 above) I'll have to dig into the code,
so I may have an answer this afternoon (Sydney time).
Jim
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