Displaying 1 result from an estimated 1 matches for "cnae4".
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ce4
2011 Jul 05
1
Create factor variable by groups
Hi, suppose that I have the following data.frame:
cnae4 cnpj 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Y
24996 10020470 1 1 2 12 16 21 17 51 43 19 183
24996 10020470 69 91 79 92 91 77 90 96 98 108 891
36145 10020470 0 0 0 0 2 83 112 97 91 144 529
44444 10023333 5 20 60 0 0 0 0 5 20 1000 1110
I would like to create...