[R] pivot table
lara.palandra at libero.it
Fri Feb 28 12:56:45 CET 2014
hi..i would create a pivot table in R and i would create two levels of
columns. I'll try to explain better. I have a table so done:
id agency offer month product
1 a L gen star
2 b M feb meteor
3 c N gen moon
4 d O march moon
.. .. ... .... ....
i'd like to aggregate this table in this way:
in the table there is id count.
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