[R] ordering a boxplot

[Antonio Silva]

Hello

I'm using a dataframe (mydata) where row names are sampling points and
column names are species in a multivariate analysis.

If I write boxplot(mydata) I'll have boxplots for each species abundance in
alphabetical order.

How to get the boxes orderer by the median?

Usually for this I write
boxplot(value~category,at=rank(tapply(mydata$value,mydata$category,median)))
but for this to work I need a column for the categories and another column
for the values.

Thanks in advance, best regards.

Antonio Olinto

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