ggplot2 horizontal line with facet_grid boxplot

Asked Nov 08 '16 at 14:37

Active Nov 08 '16 at 14:39

Viewed 628 times

I have a data frame with 4 variables. I plotted the 4 variables using boxplot and facet_grid(intg~del)

D = read.table('data.dat')
names(D) = c('size','mut','intg','del')
ggplot(D,aes(x=mut,y=size,fill=as.factor(mut))) + 
geom_boxplot() + 
facet_grid(intg~del)

I want to add a horizontal line to each facet the value is a new variable set as the following:

  D$exp<-D$intg+60-(D$del*(D$ig+60))

Data:

   size  mutation intg del  expected
   96        0     0   0.2      48   #facet 1
   95        0     0   0.2      48   #facet 1
   90        0.15  0   0.2      48   #facet 1
   73        0.15  0   0.4      36   #facet 2
   62        0.3   10  0.4      42   #facet 3
   82        0.3   20  0.4      48   #facet 4
   47        0.3   20  0.6      32   #facet 5

If I added to gggplot +geom_hline(yintercept=D$expected) I get all the lines on each facet... How can I have only one line on each facet?

edited Nov 08 '16 at 14:39

dww

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asked Nov 08 '16 at 14:37

AWRAM

can you provide an example? do `dput(head(D,50))` to give us a minimum working example. – Amit Kohli Nov 08 '16 at 14:44
4

Map the `yintercept` inside an `aes`? – Roland Nov 08 '16 at 14:46
@Roland thanks! yes it's working you can write it as an answer – AWRAM Nov 08 '16 at 20:37

ggplot2 horizontal line with facet_grid boxplot

Data:

0 Answers0