[R] structure data
Antje
antje.niederlein at yahoo.de
Thu Nov 1 14:04:42 CET 2007
Hello,
I have a quite simple question, I guess. I have a data frame and I would like
to process the data in several ways.
The processing is dependent on grouping (factors) and the parameter itself.
Meaning for parameter1 in the df, I would like to calculate the mean and sd
when grouping by factor1. But parameter2 might be different. I thought of a
structure like this:
group1
param1 (mean, sd)
param2 (sum)
group2
param1 (mean, sd, median)
param2 (mean, sd)
I'm not sure how to build up this "processing info" structure. (The processing
itself will be later based on this structure).
Would you use a list? (matrix and vector are not so flexible for different
length...)
Can anybody help m with this?
Antje
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