Hi,
I would like to create a new variable that would be the rank of a
continuous variable within each level of a grouping variable. Say the
first level of the grouping variable has 5 observations, I'd like
them ranked from one to five and a new variable would hold the rank
value (one to five). So forth for each level of the grouping variable.
I'm quite new with R and cannot figure out this one by myself.
Thanks in advance,
Denis Chabot
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