[R] modifications using “stat_summary” in ggplot

[John Kane]

It would really help to have some sample data to see what is happening.  The best way to supply data to the help group is to use dput().  Type >dput for some basic information on using it

Have a look at and/or http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example  for some hints. For this last link it is a good idea to follow the " reproducible example  " link for more concrete suggestions.


By the way calling a data.frame "data" is not a good idea.  Data is a predefined function in R . Type ?data to see what I mean.
John Kane
Kingston ON Canada


> -----Original Message-----
> From: michael.eisenring at agroscope.admin.ch
> Sent: Wed, 22 Apr 2015 09:32:11 +0000
> To: r-help at r-project.org
> Subject: [R] modifications using “stat_summary” in ggplot
> 
> 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
> 
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> Tel. +41 44 37 77181
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> 
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