[R] making groups
jholtman at gmail.com
Tue Jul 10 01:44:24 CEST 2007
It would be nice if you could supply an example of what your input
looks like and then what you would like your output to look like. You
would probably use 'tapply', but I would have to see what you data
On 7/9/07, Mag. Ferri Leberl <ferri.leberl at gmx.at> wrote:
> Dear everybody!
> If I have an array of numbers e.g. the points my students got at an
> examination, and a key to group the numbers, e.g. the key which
> interval corresponds with which mark (two arrays of the same length or
> one 2x(number of marks)), how can I get the array of absolute
> frequencies of marks?
> I hope I have expressed my problem clearly.
> Thank you in advance.
> Mag. Ferri Leberl
> R-help at stat.math.ethz.ch mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
+1 513 646 9390
What is the problem you are trying to solve?
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