What's the reason that the below -simulate command creates all missing
values for the scalar roc? Also, is it possible to suppress plotting of the
ROC curves after each -lroc?
Andrzej
program define prog, rclass
preserve
bsample
logistic y x1 x2 x3
lroc
return scalar roc=r(area)
restore
end
simulate roc=r(area), reps(100): prog
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