search for: r_ec01

...ationg in a recursive way: I have a data frame more or less like this: variable year DELTA EC01 2006 / EC01 2007 10 EC01 2008 5 EC01 2009 9 And then I have at time 2009 a variable called R_EC01(2009)=5 What I have to do is to construct the R_EC01 time series by starting from the 2009 value: R_EC01(2008)=R_EC01(2009)-DELTA(2009) R_EC01(2007)=R_EC01(2008)-DELTA(2008) R_EC01(2006)=R_EC01(2007)-DELTA(2007) In terms of number, the results that i should get are: R_EC01(2008)=5-9=-4 R_EC01(20...

...2006 EC02 9 NA M2 2007 EC02 6 10 I'm trying to build the time series of the variables by applying the following formulas in a recursive way(by starting from the value of R_pivot at time 2007) R_EC01(2006)=R_EC01(2007)-Delta_EC01(2007) R_EC01(2005)=R_EC01(2006)-Delta_EC01(2006) In terms of number I would have: R_EC01(2006)=5-4=1 R_eco1(2005)=1-2=-1 And the same should be done for variable EC02. In addition, this calculations should be down grouping by variable e cluster..so the result should...