Displaying 1 result from an estimated 1 matches for "aao1".
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aaa1
2010 Jun 03
1
cumsum function with data frame
Dear list,
I have a problem with the cumsum function.
I have a data frame like the following one
variable Year value
EC01 2005 5
EC01 2006 10
AAO1 2005 2
AAO1 2006 4
what I would like to obtain is
variable Year value cumsum
EC01 2005 5 5
EC01 2006 10 15
AAO1 2005 2 2
AAO1 2006...