Re: st: RE: Loops and counter

[<thomas@tmbx.com>]

Thank you George and Sarah. Both solutions work.

Thomas

On 2013-03-22 12:09, Sarah Edgington wrote:

> I think you're looking for something along the lines of :
> gen total=0
> forvalues i=1/14 {
> replace total=total+a`i'*b`i'*365.24
> }
>
> replace total=total/(z*365.24)
>
> If you find yourself doing repetitive calculations often, you would
> likely be well-served by carefully reading the -forvalues- and 
> -foreach-
> manual entries carefully.
>
> -Sarah
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Thomas
Speidel
> Sent: Friday, March 22, 2013 10:57 AM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Loops and counter
>
> I am trying to shorten the following expression in Stata:
>
> gen total = ((a1 * b1 * 365.24) + (a2 * b2 * 365.24) + ... + (a14 *
> b14 * 365.24)) / (z * 365.24)
>
> Where a1-a14, b1-b14, z are all continuous variables.
> Typing the expression in full is time consuming. I seem to recall I
> should be using a loop with a counter to cycle through every value 
> 1-14.

> However, I am not sure how to do that.
>
> Thanks.
>
> --
> Thomas Speidel
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