Alec,
You have to place quotes around the macro names.
gen simscore`x'=games[`x']-years[`i']
Friedrich Huebler
--- "Alec N. Halaby" <[email protected]> wrote:
> Dear Stata Community,
>
> I'm trying to write a straightforward program that is built around
> nested "forvalues" loops, and I've encountered difficulties in
> referencing specific observations using the counters. I've setup
> the for
> loops as follows, with the letters x and i used for the counters.:
> forvalues x=1/4539 {
> if d04_05==1 & year==2004 {
> forvalues i=1/4539 {
> gen simscore`x'=games[x]-years[i]......
>
> I would like to be able to retrieve data from two different
> observations
> in generating a new variable; for instance, observation 117 and
> observation 2,337 to generate games[117]-years[2337]. The reference
> and
> STATALIST material I've read has suggested that I use explicit
> subscripting to do this, and my instinct is to use square brackets
> to
> select an observation (i.e. games[117]-years[2,337]). However, when
> I
> insert the counters into the square brackets (games[x]-years[i], or
> in
> plain english "the games for observation x minus the years for
> observation i"), I get the error message that Stata is interpreting
> the
> contents of the brackets as weights. How would I use the counters
> to
> reference 2 different observations? I'm relatively new to STATA, so
> the
> answer may be as simple as a basic indexing method. Thanks in
> advance
> for any help you can provide!
>
> Best,
>
> Alec Halaby
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