CODEWITHSUNDEEP
loopsstata
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Reputation: 15458

running program inside a loop in Stata

I am trying to run a program inside a loop, but I am getting 

-Break--
r(1);

Here is my script:

 clear all
    forvalues i=1/5{
    sysuse auto if rep78==`i'
    capture program drop testpro
    program define testpro,eclass
    preserve 

    tabstat price mpg headroom,stat(mean) save
    mat avg=r(StatTotal)
    ereturn post avg
    restore 
    end
    }
    --Break--
    r(1);

    end of do-file

    --Break--
    r(1);

Any help in this regard will be highly appreciated.

Upvotes: 2

Views: 1716

Answers (1)

dimitriy
dimitriy

Reputation: 9460

There are several issues here. For one, you can't sysuse with an if clause, unlike with use.

There's no need to re-define a program with each iteration of the loop. Define it, then loop.

I am also not sure why you need a program, but this is a matter of taste or perhaps this is merely a pedagogical example.

The command estadd in the code below is part of estout suite from SCC.

clear all

capture program drop testpro
program define testpro, eclass
tabstat price mpg headroom, stat(mean) save
quietly estadd matrix avg = r(StatTotal), replace
end

forvalues i=1/5 {
    sysuse auto, clear
    keep if rep78==`i'
    testpro
    matrix list e(avg)
}

Upvotes: 3

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