search for: 1.848485

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2009 Jun 16
4
confusion on levels() function, and how to assign a wanted order to factor levels, intentionally?
Dear R-helpers, I want to make a series of boxplots on several numeric univariates with two group variables (species and population, population nested in species, and with population as the X-axis). In order to get a proper order of the individual populations in X-axis, I need to assign a wanted order to the factor (population). I used the levels() function to do this assignment, but it seemed