Different breaks per facet in ggplot2 histogram

Question

A ggplot2-challenged latticist needs help: What\'s the syntax to request variable per-facet breaks in a histogram?

library(ggplot2)
d = data.frame(x=c(rnorm(         


        

Answer 1

I don't think that it is possible to give different break points in each facet.

As workaround you can make two plots and then with grid.arrange() function from library gridExtra put them together. To set break points in geom_histogram() use binwidth= and set one value for width of bin.

p1<-ggplot(subset(d,par=="a"), aes(x=x) ) + 
  geom_histogram(binwidth=0.1) +
  facet_wrap(~ par)

p2<-ggplot(subset(d,par=="b"), aes(x=x) ) + 
  geom_histogram(binwidth=0.2) +
  facet_wrap(~ par)
library(gridExtra)
grid.arrange(p1,p2,ncol=2)