Sorry I misunderstood the question. My guess, and I'm afraid that's all it is is that you would be best off with a list. I suppose you might even want lists of lists but I am not quite sure about what 'parameter' means here. --- Antje <[EMAIL PROTECTED]> wrote:
> Yes, I know, that these methods might help to > calculate but my question was > more about how to structure the data that I can > realize this easy computation > afterwards. Due to the flexibility I need, I would > like to avoid calculations I > don't need... > > Antje > > > John Kane schrieb: > > Have a look at ?aggregate or the doBy library. > They > > may be what you want. > > --- Antje <[EMAIL PROTECTED]> wrote: > > > >> 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 > >> > >> ______________________________________________ > >> R-help@r-project.org mailing list > >> https://stat.ethz.ch/mailman/listinfo/r-help > >> PLEASE do read the posting guide > >> http://www.R-project.org/posting-guide.html > >> and provide commented, minimal, self-contained, > >> reproducible code. > >> > > > > > > > > > > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, > reproducible code. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
