Reputation: 559
How would you add points to a several boxplots beside one another of varying lengths?
boxplot(box1, box2, box3, box4, beside=T, col=c("grey100", "grey70", "grey50", "grey70"), names=c("box1", "box2", "box3", "box4"), main="all the boxes", las=2)
If I put in something with
points()
function I can't add in more than one and if I put them in separately they will be added to ALL the boxplots and I only want to see the corresponding points.
Upvotes: 4
Views: 14900
Reputation: 5162
Try:
ndata=mtcars[mtcars$carb%in%c(1:4),]
boxplot(mpg ~ carb, data=ndata
, beside=T,
col=c("grey100", "grey70", "grey50", "grey70"),
names=c("box1", "box2", "box3", "box4"),
main="all the boxes", las=2)
points(factor(ndata$carb), ndata$mpg,col=3)
points(3,30,col=4,pch=13)
text (3.5,30,"Oops",pos = 4)
Upvotes: 7