st: local variables program

["Nachbar, Dirk" <Dirk.Nachbar@infores.com>]

I want to run some regressions and have problems with the local and
global variables. I think Stata doesn't like the forval loop. How should
I refer to min and max? If you spot any other errors, it would be
appreciated.


local max=999999999999999999
sum  avgunitprice if id==5, detail
global min=r(p5)
global max=r(p95)
forval i= min min+(max-min)/100 to max {
gen belowprice=avgunitprice*(avgunitprice<`i')
gen below=(avgunitprice<`i')
gen aboveprice=avgunitprice*(avgunitprice>=`i')
gen above=(avgunitprice>=`i')
qui reg lunit below belowprice above aboveprice if id==5, nocons
if e(rmse)<max {
local max=e(rmse)
reg lunit below belowprice above aboveprice		
}
}

Dirk Nachbar


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