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Re: st: looping from 1 to a number defined by a scalar


From   "Tom Trikalinos" <ttrikalin@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: looping from 1 to a number defined by a scalar
Date   Mon, 24 Dec 2007 12:26:31 -0500

try e.g.



scalar ng = 63
forval i=1/`=ng' {
      // code
      noi di " `i'. " _c
}


tom



On Dec 24, 2007 12:15 PM,  <nicola.baldini2@unibo.it> wrote:
> I would like to create a loop from 1 to a number defined by a scalar, but:
> . forvalues 1/ng {
>   2.    mat p=inv((r1+vu)/ns[`i'])*r1
>   3.    mat q=r2*(idd-p)
>   4.    mat xtilde`i' = xmean*p +mux3*(idd-p)+dz*q
>   5.    }
> invalid syntax
> r(198);
>
> However, ng = 63 so that the following works:
> . forvalues 1/63 {
>   2.    mat p=inv((r1+vu)/ns[`i'])*r1
>   3.    mat q=r2*(idd-p)
>   4.    mat xtilde`i' = xmean*p +mux3*(idd-p)+dz*q
>   5.    }
>
> Anything shorter than...?
> local i = 0
> while `i' < ng {
>   2.    local i = `i' + 1
>   3.    mat p=inv((r1+vu)/ns[`i'])*r1
>   4.    mat q=r2*(idd-p)
>   5.    mat xtilde`i' = xmean*p +mux3*(idd-p)+dz*q
>   6.    }
>
> Merry Xmas,
> Nicola
>
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