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st: IRF: negative innovation (again)
From 
 
Karlygash Kuralbayeva <[email protected]> 
To 
 
[email protected] 
Subject 
 
st: IRF: negative innovation (again) 
Date 
 
Mon, 21 May 2012 21:13:01 +0100 
Hello all,
I am sorry if I am asking the same question that had been asked a few
years ago. I just wonder if someone has a more detailed answer to
this.
I want to create a IRF for a negative shock after svar estimation. It
is a linear model, so the IRF must be scaling of the standard +1
\sigma shock from the reported IRF, in other words -1*IRF. How can I
implement it in Stata? I have the following commands that produce IRF
for a positive
shock:
svar x y z, aeq(A) beq(B) lags(1/4)
irf create order5, step(20) set(myirf)
irf graph sirf, irf(order5) impulse(x) response(y)
many thanks for your help.
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