CODEWITHSUNDEEP
rggplot2
SnowFrog
SnowFrog

Reputation: 1162

position_dodge by colour but not pch with geom_point in ggplot2

I have the following data

df = data.frame(names = c(rep('var1',time=6),rep('var2',time=6)),
                dat = rnorm(n=12,sd=1:3),
                type=c(rep(c('mod1','mod2','mod3'),time=2)),
                length=c('1','1','2','1','3','3'))

I want a different colour for each type and different symbols for each length, which can be done using ggplot2:

ggplot(df,aes(x=names,y=dat,pch=length,colour=type)) +
          geom_point()

enter image description here

However, I would like them to be "dodged" by colour/type but not by pch/length, which is what happens if I do this 

ggplot(df,aes(x=names,y=dat,pch=length,colour=type)) +
         geom_point(position=position_dodge(width=0.6))

enter image description here

I can't find a command that would allow me to specify that the position_dodge should only apply to the colour but not pch. Any tips?

Upvotes: 1

Views: 250

Answers (1)

user1317221_G
user1317221_G

Reputation: 15441

I think this is what you want...

ggplot(df,aes(x=names,y=dat,group=type)) +
       geom_point(aes(colour=type,pch=length),position=position_dodge(width=0.6))

using your df gives:

enter image description here

Upvotes: 1

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