What about:
y<-rnorm(100);z<-sample(1:7,100,T);boxplot(y~z);points(y~z)
Peter Wolf
Ted Harding wrote:
Hi folks,
I have a vaiable Y and an associated factor Z at several (13) levels.
boxplot(Y~Z)
produces a nice array of boxplots, one for each level of Z, and each duly labaelled with its level of Z.
I would like to superpose on each boxplot the actual data points which it represents, i.e. do something conceptually (though not in real R) expressed as
points(Y~Z)
or
points(Z,Y)
It can be done "with bare hands" along the lines of
B<-boxplot(Y~Z) x<-bxp(B) X<-rep(x,ngroups) points(X,Y)
where ngroups is the number of data at each level of Z, *provided* the data are pre-sorted by level of Z and in the same order as these levels occurr in the boxplot. But of course they're not!
OK, I could do this by hand as well, but now it's getting a bit tedious, and I'm wondering if there's a better way.
Thanks for any suggestions, Ted.
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