[R] barchart in trellis and NA

Sigbert Klinke sigbert at wiwi.hu-berlin.de
Thu Jun 21 13:11:26 CEST 2007


Hi,

I've a dataset with discrete data and several groups and in one group I 
have also missing values (NA). When I use table and barchart to 
visualize the counts I never get a bar for  NA in the barchart although 
it appears in the result of table. Is there a possibility to get this 
bar too?

Thanks in advance  Sigbert Klinke



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