I am trying to avoid that dotplot sorts my x-values. They are in the correct order in the data.frame and the connections between the x-y values follows this order, but the placement of the x-values on the x-axis is re-ordered. In the following example, the order should be "d1", "d8" and "d15". However, this script places "d8" at the highest x position. Any help is appreciated. Subj <- rep(1:4,each=3) Time <- rep(c("d1","d8","d15"),4) Conc <- 1:12 df <- data.frame(Subj,Time,Conc) dotplot(Conc ~ Time | Subj, data = df, layout = c(2,2), type="b") Thanks, -Rene Irvine, CA, USA
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