[R] dotplot points color

[glaporta]

Thank you Deepayan, 
for this suggestion

dotplot(variety ~ yield | site, data = barley, groups = year, pch=21, fill =
c(1, 2))



glaporta wrote:
> 
> Dear list, 
> is it possible to change the background color of dotplot's points? I tried
> in many ways but unsuccessfully 
> Thanks in advance
> Gianandrea
> 
> require(lattice)
> dotplot(variety ~ yield | site, data = barley, groups = year, pch=21)
> dotplot(variety ~ yield | site, data = barley, groups = year, pch=21,
> bg=c("2","3")) ??!!!
> 
> 
> 

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