[R] How to use tapply with more than one variables grouped

noobmin pseudovoid at hotmail.com
Tue Oct 23 18:48:44 CEST 2012


To take this example I reduced the number of records absurdly. In the
original database there are 48 000 candidates and dozens of states. There is
no way to analyze data visually. I would not put 400 mb of tables here. But
based on the example how could list the states where obama received more
contribution?




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