Re: st: create local with specific value of a variable

[Jeph Herrin <stata@spandrel.net>]

In a program I would usually do this:

 sum y if x==50
 local y50 = cond(r(min)==r(max),r(min),.)

which also checks that the value is unique.

hope this helps,
Jeph


On 2/20/2013 10:43 AM, Pablo Bonilla wrote:
> Dear Statalist users:
>
> Sometimes I need to save in a local a specific value of a variable and
> I cannot do it because creating a local does not support “if” neither
> “in” conditions. For instances, let’s suppose that I have two
> variables: “x” and “y”. Variable “x” goes from 1 to 100 and “y” is a
> random vector. Now, how can I save in a local the value of “y” when
> “x” is, for example, 50?  In other words, I would like to do something
> like this:
>
> local y50 = y if x == 50
>
> I know that is not possible and it is actually a “heresy” in Stata
> language but it might give you an idea of what I need.
>
> Thank you so much for your help and any idea is more that welcome.
>
> Best
>
>
> ----
>
> Pablo Bonilla
>
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