On 2/10/2014 11:12 AM, Bert Gunter wrote:
Perhaps:

?tapply

and/or various wrappers like ?by .

Cheers,
Bert
Thanks, Bert
The examples for ?by gave the answer I was looking for:

# using by()
mods <- with(Punishment,
             by(Punishment, list(age, education),
                function(x) loglm(Freq ~ memory + attitude, data=x)
             ))


--
Michael Friendly     Email: friendly AT yorku DOT ca
Professor, Psychology Dept. & Chair, Quantitative Methods
York University      Voice: 416 736-2100 x66249 Fax: 416 736-5814
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