<>
Very normal: Stata does not know the -global- "$f_pA_`", so it evaluates to
nothing. So all that is left is `i' which evaluates to 1..
HTH
Martin
_______________________
----- Original Message -----
From: "Tiago V. Pereira" <[email protected]>
To: <[email protected]>
Sent: Tuesday, February 24, 2009 7:50 PM
Subject: st: How to solve a problem with globals
Dear statalisters,
Firstly, I would like to thank several statalisters for the splendid help
in my previous questions.
Now, I am having the following problem:
. global f_pA_1 = 0.5
. local i = 1
. dis $f_pA_`i'
1
. dis $f_pA_1
.5
Is that normal?
All the best,
Tiago
I usually need to compute a value X that satifies a specific condition.
A typical example is shown below. But this is only a single example, and
ordinarily I have similar, but more complex aims.
Hence, I would like to know your expert opinion on how one can make codes
these kind of codes faster. Perhaps only Mata helps?
In this example, I want to compute the value of tau^2 that imposes the
lower limit of my confidence interval to be 0.
.
.
.
scalar lower_limit = 999999999
while lower_limit>0 {
local tau2 = `tau2'+0.0001
cap drop T_i V_i W_i WT
gene T_i= ln(_ES)
gene V_i = _selogES^2
gene W_i = 1/(V_i+`tau2')
gene WT = W_i*T_i
qui summ WT
scalar sum_WT = r(sum)
qui sum W_i
scalar sum_W_i = r(sum)
scalar summary_random = sum_WT/sum_W_i
scalar lower_limit = summary_random-(1.96/sqrt(sum_W_i))
}
Cheers!
Tiago
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