> -----Original Message-----
> From: Chris Rohlfs [mailto:[email protected]]
> Sent: Thursday, March 27, 2003 11:09 AM
> To: [email protected]
> Subject: st: looping with macro names
>
>
> hi!
>
> i'm trying to make a loop to run statements like:
>
> qui gen `mathXfirst' = math*first
> qui gen `englishXfirst' = english*first
> qui gen `other_acadXfirst' = other_acad*first
>
> qui gen `mathXst' = math*st
> qui gen `englishXst' = english*st
> qui gen `other_acadXst' = other_acad*st
>
> where the first variable in each case is a tempvar name and
> hence inside
> quotation marks. is there a way to do something like:
>
> for C in var math english other_acad: for V in var first st: ...
>
> or something with foreach that will replace the V and C with variable
> names, even inside the quotation marks?
>
> thanks!
> chris
I think you want:
foreach C in math english other_acad {
foreach V in first st {
qui gen ``C'X`V'' = `C'*`V'
}
}
The first time through, for example, Stata expands the `C' to be -math-,
and the `V' to be -first-, so ``C'X`V'' expands to `mathXfirst', which
then expands to the tempvar of that name.
I'm assuming here that the tempvars have been declared already, but if
not, you can do it as you go:
foreach C in math english other_acad {
foreach V in first st {
tempvar `C'X`V'
qui gen ``C'X`V'' = `C'*`V'
}
}
NIck WInter
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