data(VoleDispersal)
xtabs(count~sex+homeranges,VoleDispersal)
barchart( xtabs(count~sex+homeranges,VoleDispersal), auto.key=TRUE)
barchart(count~sex+homeranges,VoleDispersal)
barchart(count~sex,groups=homeranges,VoleDispersal)
barchart(count~sex,groups=homeranges,VoleDispersal,stack=TRUE)
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