Using annotate to add different annotations to different facets

Question

I'm trying to add panel labels to different facets in a plot. I want them to be 1:7, but, the following code

d <- ggplot(diamonds, aes(carat, price, fill = ..density..)) +
     xlim(0, 2) + stat_binhex(na.rm = TRUE) + opts(aspect.ratio = 1)

d1<-d + facet_wrap(~ color)

d1+annotate("text", x=0.25, y=1.5e+04, label=1:7)

yields

Error: When _setting_ aesthetics, they may only take one value. Problems: label

Now, I can supply a single value and get that replicated across all facets. But how can I have different labels in different facets using annotate()?

Brian Diggs · Accepted Answer · 2012-06-13 21:05:21Z

28

With annotate, you can't. But by setting up a data.frame and using it as the data source for a geom_text, it is easy (with a few bookkeeping aspects).

d1 + geom_text(data=data.frame(x=0.25, y=1.5e+04, label=1:7, 
                               color=c("D","E","F","G","H","I","J")), 
               aes(x,y,label=label), inherit.aes=FALSE)

enter image description here

answered Jun 13, 2012 at 21:05

Brian Diggs

59.1k14 gold badges169 silver badges189 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Kots Over a year ago

If you want to add text to multiple rows, make sure that your colnames() in the text data.frame match those of the data you are about to plot.

Collectives™ on Stack Overflow

Using annotate to add different annotations to different facets

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related