[R] alternative to 'groups' for lattice bwplot()

From: Sebastian Luque <sluque_at_mun.ca>
Date: Wed 23 Mar 2005 - 17:10:37 EST


Hi,

Is there some alternative to the 'groups' argument in lattice's bwplot function for boxplots? Say in the example below:

bwplot(yield ~ site | year, data = barley)

you want to have two side by side boxplots per site, corresponding to each year in the barley data frame. Ideally, the space between boxplots of the same site should be smaller than that between boxplots of different sites.

This seemed like a job for the 'groups' argument, but panel.bwplot doesn't take it. I saw that boxplot() might do this for the particular example above, but not for a more complex one with additional conditioning variables (as in my actual problem).

I thought I'd find something about this in the archives, but I'm either not using the right keywords or the question hasn't come up yet.

Some help on how to deal with this please?

-- 
Sebastian P. Luque

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Received on Wed Mar 23 17:13:16 2005

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