ggplot2 bar plot, no space between bottom of geom and x axis keep space above

Question

When I plot a bar graph in ggplot2 I would like to reduce the space between the bottom of the bars and the x-axis to 0, yet keep the space above the bars and the plot box.

Answer 1

I might be missing what you really want, but without using geom_text hack you can still set the limits

ggplot(mtcars, aes(x = as.factor(carb))) + 
    geom_bar() + 
    scale_y_continuous(expand = c(0, 0), limits = c(0, 10.3)) 

# marginally cleaner