Hi, I am trying to calculate a varible in SAS which is dependant on the previously calculated varibles. I thought this would be simple with the following code but it does not compute. data test1; set rate; if id_perd = '1' then Dis_fact= 1/(1+((Swap_Spot_Rate)/12)); else if id_perd > '1' then Dis_fact = (1/(1+((Swap_Spot_Rate)/12)))*lag(Dis_fact); run; Is it possible to calculate a varible dependant on the previously calculated varible in sas? All help would be appreciate. Thanks! Patrick B.
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