Tell me more ×  I have a dataset with three factors
(Group=Between; Drug=Within; Session=Within) and one response
variable (DEs2mPre). I am able to plot faceted boxplot using
qplot(Session, DEs2mPre, data = Dummy.Data, colour = Drug,
facets=Group~., -geom="boxplot")  I have three groups and two
levels of Drug, so I get nice 3X2 graph with 3 individual graphs
for each group with two levels of drug over the sessions on each
graph. However instead of boxplots I would like to see lines
connecting the means on each session. When I change geom to
geom="line", I get a mess of lines what looks like a line for
every subject in the dataset and not a grouped (mean like)
visualization of the data like what you would see with
lineplot.CI (sciplot package).  Is there any way to do that in
ggplot2?  Sorry I couldn't add my graphs because I do not have
enough "reputation points".  Thanks for any help in advance.
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'12 at 21:35   1 Answer  up vote 1 down vote accep