Dear experts,
I am trying to make a bar graph using ggplot2. I would like to define the order
of my bars independently of alphabetical or numerical order.
How can I do that.
Here a simplified example of my code and comments(#) describing my problem:
#Code start
library(ggplot2)
bar<-ggplot(data,aes(Leaf,Av_Glands_cor,fill=Damage))
# The column "Leaf" contains the variable C_1, C_2 and C_Cot. R always plots
the bars in the following orders : C_1 (closest to the y-axis), C_2, C_Cot
# How do I have to modify my code that the order of the bars is: C_Cot, C_2,
C_1?
bar+stat_summary(fun.y=mean,geom="bar",position="dodge",colour="black")+
theme_bw()+
theme(text = element_text(size=15),
axis.text.x = element_text(angle=90, vjust=1))+
stat_summary(fun.data=mean_cl_normal,geom="errorbar",position=position_dodge(width=0.9),width=0.4,colour="gray65")+
labs(x="Leaf",y="Average nr. glands corrected for leaf sz.",fill="Damage")+
scale_fill_manual(values=c("gray95", "gray75", "gray45", "black"))
#Code end
Thank you very much,
Michael Eisenring
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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