CODEWITHSUNDEEP
rboxplot
newRuser
newRuser

Reputation: 13

Adding points to a boxplot based on another variable

I'm fairly new to R and would appreciate some input. I've created a plot with up to 4 boxplots for each wave (1-5). I would now like to display symbols on the plot for someone responses based on their id. For instance, I want to show the responses where id=202 (id is also in data 'mydata'). I've searched high and low, and cannot figure out how to do it. Any thoughts? Here's my code (it seems I can't post my image without a 10 reputation): 

ggplot(aes(y=InnAttMeasure, x=interaction(IntType, wave)), data=mydata)+   
geom_boxplot(aes(fill=factor(IntType)))+
stat_summary(fun.y="mean", geom="point", shape=23, size=3, fill="black") +
scale_fill_brewer()+ 
xlab("Wave") +
ylab("Innovation Attribute Measure (1-7)" ) +
facet_grid(.~wave, scales="free", space="free") +
coord_cartesian(ylim=c(0,7.5)) +
scale_y_continuous(breaks=seq(0,7,1)) + 
scale_x_discrete(breaks=NULL) +
theme(panel.grid.minor.y=element_blank(),
panel.grid.major.y=element_blank())

Upvotes: 1

Views: 3586

Answers (1)

JasonAizkalns
JasonAizkalns

Reputation: 20483

It's not entirely clear what you're asking, but perhaps you can construct an example using one of the built-in datasets. For example, I think this might be what you're after:

# First look at the mtcars dataset
mtcars

library(ggplot2)

# Let's make a dataframe of just the Mercedes cars; lots of ways to do this.
mercedes <- mtcars[grep("Merc", row.names(mtcars)), ]

# Now plot a boxplot of mpg by cylinder and then overlay points geom_point()
# of just the Mercedes dataframe
ggplot(data = mtcars, aes(y = mpg, x = factor(cyl))) +
  geom_boxplot() +
  geom_point(data = mercedes, color = "blue", position = "jitter", size = 4)

Results

Upvotes: 1

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