[R] lattice dotplot labelling median and mean values for each panel

[maxbre]

sorry, I've managed to find a (partial) solution to my problem (even not much
elegant);
now what is left out is the proper tweaking of labels...

any better solutions?

dotplot(variety ~ yield | site, data = barley, 
        layout = c(1,6),
        index.cond= function(x,y){median(x)},
        panel = function(x,y,...) { 
          panel.dotplot(x,y,...) 
          median.values <- median(x) 
          panel.abline(v=median.values, col.line="red")
          mean.values<-mean(x)
          panel.abline(v=mean.values, col.line="blue")
          panel.text(x=median.values,y=mean(as.numeric(y)),
labels=round(median.values,0),col="red",pos=1,...)
          panel.text(x=mean.values,y=mean(as.numeric(y)),
labels=round(mean.values,0),col="blue",pos=1,...)
          })



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