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

[R. Michael Weylandt]

I can reproduce the OP's problem with ggplot 0.9.0 but I don't know
how to solve it: perhaps you should take this to the ggplot2 mailing
list: https://groups.google.com/group/ggplot2?pli=1

Michael

On Fri, Mar 16, 2012 at 4:17 AM, Bart6114 <bartsmeets86 at gmail.com> wrote:
> To visualize my problem a little; see this screenshot
> http://i40.tinypic.com/fodsm0.png http://i40.tinypic.com/fodsm0.png .
>
> So I would like factor level 4 to show up but without a bar (zero counts).
>
> Thanks
>
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