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# Re: st: if expression involving a variable in a while loop

 From Oliver Jones To statalist@hsphsun2.harvard.edu Subject Re: st: if expression involving a variable in a while loop Date Wed, 13 Jul 2011 21:25:54 +0200

```Sorry my fault.
Of course one has to reset the local sum back to 0 once it has reached the 0.95 for
the specific row we are looking at currently.

Am 13.07.2011 21:22, schrieb Daifeng He:
```
```Thanks, Scott.  The code works and it's exactly what I had wanted.

Oliver, your codes look reasonable to me too but when I run them, only
the first obs is filled in with values for the two newly-generated
variables.  I will try to figure it out.

Joerg, yes, my weight variables are sorted for each obs, but your
codes are illuminating and I learned from them too.

Guys, thanks for all your help!

Kind regards,
Daifeng

On Wed, Jul 13, 2011 at 2:56 PM, Scott Merryman
<scott.merryman@gmail.com>  wrote:
```
```Like this?

clear
input  v1  v2   v3   v4   v5   v6   v7
.96 .04 .0 0 0 0 0
.5 .3 .1 .03 .03 .03 0.01
.4 .2 .2  .15 .03 0.015 .002
.3 .3 .37 .03 0 0 0
.9 .08 .02 0 0 0 0
end

gen sum = 0
gen var_count = 1
qui {
forv i = 1/7 {
replace sum = sum + v`i' if sum<.95
replace var_count = var_count + 1 if sum<.95
}
}

l

Scott
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```
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```
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