Stata has a construct
if ... {
...
}
but it is not what you want here. Two
rules seem immediately pertinent:
1. when you test for equality, you must use == not =
AND
2. once a variable has been -generate-d, any
further changes must be through -replace-.
gen var1 = varold01 if nivel==1 & area==1 & sex==1
gen var2 = varold02 if nivel==1 & area==1 & sex==2
gen var3 = varold03 if nivel==1 & area==2 & sex==1
replace var2 = varold02 if nivel==1 & area==2 & sex==2
gen var4 = varold04 if nivel==1 & area==1
gen var5 = varold05 if nivel==1 & area==2
Nick
[email protected]
GLORIA ZAMBRANO ROZAS
> I am new in stata and want to generate several new variables,
> some of them
> under the same conditionals, something like this:
>
> gen var1= varold01 if ( nivel=1 & area=1 & sex=1)
> gen var2=varold02 if ( nivel=1 & area=1 & sex=2)
>
> gen var3= varold03 if ( nivel=1 & area=2 & sex=1)
> gen var2=varold02 if ( nivel=1 & area=2 & sex=2)
>
> gen var4= varold04 if ( nivel=1 & area=1 )
> gen var5=varold05 if ( nivel=1 & area=2 )
>
> I want to know if stata has a command that let me do
> something like this:
>
> if nivel=1 & area=1 then do;
>
> gen var2=varold02 if (sex=2)
> gen var4= varold04
>
> if nivel=1 and area=2 then do;
>
> gen var3= varold03 if ( sex=1)
> gen var2=varold02 if ( sex=2)
> gen var5=varold05
>
> that let me reduce the number of conditionals
*
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