Question

I am having a bit of a hard time getting my histogram to plot the correct number of bins. I would like each bin to be the values 1-5, 5-10, 10-15, etc but when I use stat_bin it reverts to the range/30 default.

ggplot(tmp,aes(x = values)) + 
+     facet_wrap(~ind) +
+     geom_histogram(aes(y=..count../sum(..count..)),stat="bin")+
+     scale_x_continuous("Percent above 30x")+
+     scale_y_continuous("Fraction of panel")+
+     opts(title = yz)+
+     stat_bin(bandwidth=5.0)
stat_bin: binwidth defaulted to range/30. Use 'binwidth = x' to adjust this.

I was thinking it would likely be some silly syntax thing that I did not quite grasp while I was reading.
I was hoping someone could advise me on why this is happening.

Answer 1

The OP posted this solution: add binwidth=5 argument to geom.

ggplot(tmp,aes(x = values)) +
    facet_wrap(~ind) +
    geom_histogram(aes(y=..count../sum(..count..)), binwidth=5)+
    scale_x_continuous("Percent above 30x")+
    scale_y_continuous("Fraction of panel")+
    opts(title = yz)