
Dear list,
I have a big data frame which looks like this:
variable                 YEAR                          VAR
EC01                      2006                             100

EC01                      2007                              200

EC02                       2006                             500

EC02                       2007                              450

PROD                       2006                              567

PROD                       2007                              543

What I would like to do is to divide each variables by PROD,namely:
EC01(2006)/PROD(2006)
EC01(2007)/PROD(2007)
EC02(2006)/PROD(2006)
EC02(2007)/PROD(2007)
Anyone knows how to do it??
THANKS!!!

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