Hi,
2011/10/25 Andrés Aragón <armand...@gmail.com>:
> Dear all,
>
> I'm trying to analyze data with the following structure:
>
> ind cat tx age
> 40.2 por fol peq vh 35
> 41.9 por fol med vh 35
> 68.9 por fol preov vh 35
> 71.5 por fol peq ser 37
> 67.5 por fol med ser 37
> 76.9 por fol preov ser 37
> 78.7 por fol peq otr 37
> 78.3 por fol med otr 37
> 82.1 por fol preov otr 37
> 83.9 por fol peq vh 37
> 80.6 por fol med vh 37
> 76.1 por fol preov vh 37
> 86.9 por fol peq ser 35
> 97.7 por fol med ser 35
> 62.3 por fol preov ser 35
>
>
>
> I want to separate exclusively some of factor levels (“por fol peq”
> in the “cat” colum). I am using ggplot2 and I only can plot all of
> factors, not separately. I did try ddply without success.
> Any help is welcome.
This kind of question is *so* much easier to answer if you provide
reproducible data with dput(). This is untested because of lack of
data, but what about
newdata <- origdata[origdata$cat %in% c("por", "fol", "peq"),]
Depending on the effect you want, you may also wish to drop the
unused levels or reorder the levels using factor().
Sarah
--
Sarah Goslee
http://www.functionaldiversity.org
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