Re: st: Generate

[Ada Ma <pec187@abdn.ac.uk>]

using the -by- or -bysort- might help.  since it look like you haven't specified 
your whole set of conditions in your query I don't think I can simplify all the 
conditions for you, but you can certainly simplify conditions 1 and 2 with:

bysort nivel sex: gen var2=varold02 if sex==2


GLORIA ZAMBRANO ROZAS wrote:


> Hi,
> 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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