[R] tapply and functions with more than one objects

Dominic Roye dominic.roye at gmail.com
Tue Jan 22 23:24:47 CET 2013


How i can use a costum function in tapply which has more than one variable?

I mean sum(x) only needs one object but what when i have a function
function(x,y) with more, how i indicate where are the other variables
to use?7

I hope someone can help me. Thank you!!

Best regards,


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