Stata reads $S`j' as $S followed by `j', or zero followed by null.
Try ${S`j'} instead.
-----Original Message-----
From: Amit Khandelwal [mailto:[email protected]]
Sent: Tuesday, August 17, 2004 6:15 PM
To: [email protected]
Subject: st: global variable in a loop
I have the following code:
global S_1 "S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13"
global S1=1.1
global S2=1.2
global S3=1.3
global S4=1.4
global S5=1.5
global S6=1.6
global S7=1.7
global S8=1.8
global S9=1.9
global S10=1.432
global S11=1.243
global S12=1.3421
global S13=1.412
capture drop index
gen index=.
forvalues j=1/13 {
bysort destination year: replace
index=sum(prices^(1-$S`j')) if `j'==d2
}
d2 is a variable that takes values 1-13. So, if d2=4, I need it the
corresponding prices raised to 1-$S2. However, Stata instead makes
$S`j'=1 for all j, so my price variable is being raised to the 0
power. Does anyone know what is wrong with my code?
Thanks,
Amit
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