[R] Two-way ANOVA

[casot at libero.it]

I've got this dataframe

   X12 X14 X17 X19 vitigni years
1    1   4  78  54     rie  2005
2    1   4   7   4     rie  2005
3    1   4  75   5     rie  2005
4    2   5  66   5    croa  2005
5    1   4   4  46    croa  2005
6    2   5   7   6    croa  2005
7    3   2  56   5     rie  2006
8    3   6   4   7     rie  2006
9    3   2  36   7     rie  2006
10   1   5   3   7    croa  2006
11   1 342  65   7    croa  2006
12   1   4  56   6    croa  2006

vitigni and years are the two factors. how can I run a two way ANOVA on each column?


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