[R] Ggplot barchart drops factor levels: how to show them with zero counts?

Bart6114 bartsmeets86 at gmail.com
Thu Mar 15 18:46:38 CET 2012

Thanks for the fast reply.

I'm using ggplot2 (it was a typo in my code example). However, using exactly
the same example as I mentioned before, it only shows the bars for cyl=6&8.

How can the behaviour be different on differing machines? I just checked for
updates and I have the latest ggplot2.



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