Re: st: loop to create varialbes

[Carlos Avellaneda Suárez <carlos.avellaneda8@gmail.com>]

The problem is that a variable in Stata cannot contain periods. Try this:

foreach x of varlist _all {
gen d_`x'=d.`x'
}

Hope this helps.
Carlos

2014-03-06 13:11 GMT-05:00 Snapp, Kevin Michael <ksnapp@iupui.edu>:
> Hello
>
> I need a loop that will go through my two year panel set and create the first difference for me for each variable.  I don't have a clue about these for each loops.
>
> Here is what I tried.
>
> foreach x of varlist _all{
>   generate d.`x' = 'x' - L1.`x'
>
> the error msg I get is:
>
> d.state invalid name
> r(198);
>
> I would like the new variables to have the same name as the old with a d in front to keep it easy to read.
>
> Any help is appreciated.
> Regards
> Kevin Snapp
> IUPUI Economics
> ksnapp@iupui.edu
> 317 274 5960
>
>
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