the below lines try to derive 2 variables and dummy confidence intervals (like impulse responses) and then superimpose them on one graph so everything can be seen clearly, or as clearly as possible. But can't quite get what I want. any help appreciated.
clear
set obs 100
g tt=_n
tsset tt
g x1=rnormal()
g x2=rnormal()
foreach var of varlist x1 x2 {
egen `var'sd=sd(`var')
g `var'U=`var'+2*`var'sd
g `var'L=`var'-2*`var'sd
}
graph twoway (rarea x1U x1L tt, astyle(ci) || li x1 tt ) (rarea x2U x2L tt, astyle(ci) || line x2 tt)
clear
set obs 100
g tt=_n
tsset tt
g x1=rnormal()
g x2=rnormal()
foreach var of varlist x1 x2 {
egen `var'sd=sd(`var')
g `var'U=`var'+2*`var'sd
g `var'L=`var'-2*`var'sd
}
graph twoway (rarea x1U x1L tt, astyle(ci) || li x1 tt ) (rarea x2U x2L tt, astyle(ci) || line x2 tt)
