stacked bars within grouped bar chart

ggplot2, r

Solution

You can put `cat` on the x-axis and use `facet_grid` with `year`:

ggplot() +
  geom_bar(data=test, aes(y = value, x = cat, fill = cond), stat="identity",
           position='stack') +
  theme_bw() + 
  facet_grid( ~ year)

Problem

I have the following graph ``` test <- expand.grid('cat' = LETTERS[1:5], 'cond'= c(F,T), 'year' = 2001:2005) test$value <- floor((rnorm(nrow(test)))*100) test$value[test$value < 0] <- 0 ggplot() + geom_bar(data=test, aes(y = value, x = year, fill = cat), stat="identity",position='dodge') + theme_bw() ``` and I need to divide each 'cat' by 'cond'(true or false). How do I do that?

Original source