[R] summary statistics for grouped data

[Søren Højsgaard]

You might find the summaryBy function in the doBy package useful.
Regards
Søren

________________________________________
Fra: r-help-bounces at r-project.org [r-help-bounces at r-project.org] På vegne af jose romero [jlaurentum at yahoo.com]
Sendt: 12. februar 2010 18:23
Til: r-help at r-project.org
Emne: [R] summary statistics for grouped data

Hello list:

Is there an easy way (preferably through one of the standard R packages) of obtaining summary statistics for grouped data? I could split the data into classes by hist, and then progressively calculate all the "columns" i need to obtain the mean and standard deviation, but i was looking for a single function that could do that with a data vector.

Thanks in advance,

jose romero


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