Dear R-list members
I am using �stat_summary� in ggplot to plot a error bar graph comparing three
treatmens (damage, see code below).
I would like to change the shape of the three symbols displaying the mean
values (e.g one symbol should be a point (default) one should be a triangle and
one should be a square). Furthermore, I would like that the outlines of my
error bars are black (and that I can fill them with whatever color I want ( I
used white, black and gray65).
Does Anyone of you know how to solve these problems?
I use the following code:
line<-ggplot(data,aes(leaf,cor_average,fill=damage, colour=damage))
#define x (leaf) and y (cor_average) variables within aes() and that they
should be colored according to damage type
line+stat_summary(fun.y=mean, geom="point", size=3)+
#add mean as point symbol
stat_summary(fun.data=mean_cl_boot,geom="errorbar",width=0.3, size=0.75)+
scale_colour_manual(values=c("white","black","gray65"))+
#add CI : width=width of CI whiskers, size=widht of the CI bar
labs(x="Leaf",y="Average nr. glands corrected for leaf sz.")
Thank you very much,
Michael
Eisenring Michael, Msc.
PhD Student
Federal Department of Economic Affairs, Education and Research
EAER
Institute of Sustainability Sciences ISS
Biosafety
Reckenholzstrasse 191, CH-8046 Z�rich
Tel. +41 44 37 77181
Fax +41 44 37 77201
michael.eisenr...@agroscope.admin.ch<mailto:michael.eisenr...@agroscope.admin.ch>
www.agroscope.ch<http://www.agroscope.ch/>
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