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Hi, I have a data set with two y variables (y1 and y2) and one dependent variable(x) and a 1 strata variable Z. It so happens that y1 and y2 have very different scales such that single y-axis scale doesnot allow the data to be visualized fully. I am trying the following lattce graphics to do my plot : xyplot(y1 + y2~x|Z,data=D,type="b") This provides the appropriate plots by due to big scale differences y1 and y2 cannot be viewed together on a same scale i want to know if there is a way in lattice graphics to add an additional scaling to the right y-axis in...