You have already had good answers.
In addition, note that the consequence of your definition
local industria "ind1 ind2 ind3 ind4 ind5 ind6 ind7 ind8 ind9"
is that the line
while `industria' == 1 {
is seen by Stata as
while ind1 ind2 ind3 ind4 ind5 ind6 ind7 ind8 ind9 == 1 {
That is illegal and not what you want anyway.
As Eva pointed out, you need better ways of doing this.
Leonor Saravia
I'm learning how to make some programs in Stata, but I�m having
problems in using the 'while' command.
My database looks like this:
FIRM_ID IND1 IND2 IND3 .....IND9 TAX INV
120 1 0 0 0 0.16 100
123 0 1 0 0 0.16 200
120 1 0 0 0 0.15 150
134 0 0 0 1 0.16 180
123 0 1 0 0 0.15 200
134 0 0 0 1 0.15 120
.
.
123 0 1 0 0 0.17 130
I need to do a two step regression by the variable IND, this is: when
IND1==1, IND2==1, IND3==1, ...,IND9==1, I need that Stata runs this
programm:
First step:
regress TAX EXP, robust
predict tax_hat
Second step:
xtreg INV tax_hat, fe
end
So, what I was trying to do in my do-file was (and it's not working):
local industria "ind1 ind2 ind3 ind4 ind5 ind6 ind7 ind8 ind9"
while `industria' == 1 {
reg tax exp, robust
predict double tax_hat
xtreg ln_inv tax_hat, fe vce(bootstrap)
drop tax_hat
}
But when I do this, Stata gives me this message: program error:
code follows on the same line as open brace
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