Hi all
I have two basic questions for a VAR analysis:
1- I am estimating a var and plotting the orthognalized IRFs. The default in Stata for confidence level is 95%.
Is there a way to show different confidence levels for the same graph, for example showing lines for 95% and 99% levels for the impulses instead of only 95% or 99%?

I used this anyways to plot my irfs:
Code:
var gdp inv oil klm, lags(1) dfk
irf create order1, step(10) set(myirf1, replace)
irf cgraph (order1 klm gdp oirf)
2- I understand that the IRF reported from the code above will show the impact of a positive shock. Can I show the impact of negative shocks as well (as I am expecting asymmetry in the response to the shocks)?