[R] graphing with barchart question

Matthew Bridgman m.bridgman at sbcglobal.net
Mon May 7 22:10:51 CEST 2007

I have attached my data frame: DV = dv; IV = bins; subject = id,  
Group = group.
barchart(dv ~ bins | id + group, groups = group, data = matt.df)

The two suggestions you offered give me error messages regarding  
invalid line type and do not plot all of the data. If I drop the  
'groups' argument I get all of the data, but it plots all  
combinations of group and id (yielding 36 plots instead of 18). Is  
there a way to eliminate some of the combinations?

Thanks again for your help.


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> It doesn't have to be, you can do
> barchart(DV ~ IV | subject + Group, groups = Group)
> or
> barchart(DV ~ IV | subject:Group, groups = Group, auto.key = TRUE)
> Of course, I can't check this because you still haven't given me a
> reproducible example (and please CC r-help so that follow ups remain
> archived).
> -Deepayan

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