On Fri, 2006-11-17 at 05:21 -0500, Chuck Cleland wrote: > Murray Pung wrote: > > Is it possible to add standard error bars to the means on interaction plots? > > Not with interaction.plot(), as far as I know. You might consider the > effects package by John Fox. For example:
Another possibility is the function lineplot.CI from the package sciplot (a wrapper that adds SE bars to the output from interaction plots). For example: library(sciplot) data(ToothGrowth) lineplot.CI(dose, len, group = supp, data = ToothGrowth) -- Manuel A. Morales http://mutualism.williams.edu
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