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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