Hi,
The following data is a mini version of my dataset, it is a little difficult to explain what Im trying to do, apologies for the confusion in advance. Basically Im trying to replace the value 0 from variable sa to sz with the sum value of 2 variables(out of the 4 variables) from reta to retz given the condition of the two variables have the highest and second highest value in ratioa to ratioz
(i.e In the second row (where sa have a value of 0). Between ratioa to ratioz, ratioc and ratiob have the highest and second highest value, I would like to replace sa with the sum value of retc and retb)
Im new to stata could you please give me detailed clarification.
Thank you very much!
Chris
The following data is a mini version of my dataset, it is a little difficult to explain what Im trying to do, apologies for the confusion in advance. Basically Im trying to replace the value 0 from variable sa to sz with the sum value of 2 variables(out of the 4 variables) from reta to retz given the condition of the two variables have the highest and second highest value in ratioa to ratioz
(i.e In the second row (where sa have a value of 0). Between ratioa to ratioz, ratioc and ratiob have the highest and second highest value, I would like to replace sa with the sum value of retc and retb)
Im new to stata could you please give me detailed clarification.
Thank you very much!
Chris
| date | a | b | c | z | sa | sb | sc | sz | reta | retb | retc | retz | ratioa | ratiob | ratioc | ratioz |
| 4/01/11 | 11.39 | 4.24 | 2.67 | 3.26 | . | . | . | . | . | . | . | . | 0.996980134 | 1.007724306 | 1.015016126 | 1.00076748 |
| 5/01/11 | 11.24 | 4.19 | 2.63 | 3.23 | 0 | 0 | 0 | 0 | -0.013169447 | -0.011792453 | -0.014981273 | -0.009202454 | 0.985230335 | 0.996551267 | 0.999809892 | 0.992167078 |
| 6/01/11 | 11.14 | 4.16 | 2.61 | 3.22 | 0 | 0 | 0 | 0 | -0.008896797 | -0.007159905 | -0.007604563 | -0.003095975 | 0.977493121 | 0.990004726 | 0.992395394 | 0.989855512 |
| 7/01/11 | 11.18 | 4.3 | 2.65 | 3.27 | 0 | 1 | 1 | 1 | 0.003590664 | 0.033653846 | 0.01532567 | 0.01552795 | 0.982166356 | 1.022470544 | 1.007221573 | 1.005225939 |