CODEWITHSUNDEEP
rggplot2
user3089803
user3089803

Reputation: 109

ggplot: geom_boxplot and geom_jitter

Align the data points with the box plot.

DATA:

data<-structure(list(score = c(0.058, 0.21, -0.111, -0.103, 0.051, 
0.624, -0.023, 0.01, 0.033, -0.815, -0.505, -0.863, -0.736, -0.971, 
-0.137, -0.654, -0.689, -0.126), clin = structure(c(1L, 1L, 1L, 
1L, 1L, 2L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 1L), .Label = 
c("Non-Sensitive", 
"Sensitive "), class = "factor"), culture = structure(c(1L, 1L, 
1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L
), .Label = c("Co-culture", "Mono-culture"), class = "factor"), 
    status = structure(c(2L, 2L, 1L, 2L, 2L, 1L, 2L, 2L, 1L, 
    2L, 2L, 1L, 2L, 2L, 1L, 2L, 1L, 2L), .Label = c("new", "old"
    ), class = "factor")), .Names = c("score", "clin", "culture", 
"status"), class = "data.frame", row.names = c(NA, -18L))

CODES:

p<-ggplot(data, aes(culture, as.numeric(score),fill=status))

p+geom_boxplot(outlier.shape = NA)+
   theme_bw()+scale_fill_grey(start = 0.8, end = 1)+
   labs(title="title", x="", y="score",fill="", colour="")+
   geom_jitter(aes(colour = clin), alpha=0.9, 
   position=position_jitter(w=0.1,h=0.1))

RESULT

As you can see, the data points plotted using geom_jitter do not align with the boxplot. I know that I need to provide aes elements to geom_jitter as well - but I not sure how to do it correctly.

Upvotes: 1

Views: 8860

Answers (1)

BrodieG
BrodieG

Reputation: 52687

I don't think you can do this because the positions of the boxplots are being driven by the dodge algorithm as opposed to an explicit aesthetic, though I'd be curious if someone else figures out a way of doing it. Here is a workaround:

p<-ggplot(data, aes(status, as.numeric(score),fill=status))
p+geom_boxplot(outlier.shape = NA)+
  theme_bw()+scale_fill_grey(start = 0.8, end = 1)+
  labs(title="title", x="", y="score",fill="", colour="")+
  geom_jitter(aes(colour = clin), alpha=0.9, 
              position=position_jitter(w=0.1,h=0.1)) +
  facet_wrap(~ culture)

enter image description here

By using the facets for culture, we can assign an explicit aesthetic to status, which then allows to line up the geom_jitter with the geom_boxplot. Hopefully this is close enough for your purposes.

Upvotes: 3

Related Questions