st: AW: AW: simulate using lroc

["Martin Weiss" <martin.weiss1@gmx.de>]

<>

BTW, -bsample- has no mandatory arguments, so it is your prerogative no to
supply any, but it does not have any effect, then...


HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Martin Weiss
Gesendet: Donnerstag, 3. September 2009 18:52
An: statalist@hsphsun2.harvard.edu
Betreff: st: AW: simulate using lroc


<>

You also asked Stata for "r(area)", although your "prog" returns "r(roc)"...



Here is a possible solution:


******
capt pr drop myprog

clear*
set obs 1000

//covariates
gen x1=rchi2(2)  
gen x2=rnormal()   
gen x3=runiform()

//DGP
gen y=runiform()< /* 
 */ invlogit(1+0.3*x1+ /* 
 */ 0.6*x2+0.5*x3)


program define myprog, rclass
    preserve
    bsample 1000
        logistic y x1 x2 x3
        qui lroc, nograph
        return scalar roc=r(area)
    restore
end

simulate roc=r(roc),  /* 
 */ reps(100): myprog


list, noobs

******


HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Andrzej
Niemierko
Gesendet: Donnerstag, 3. September 2009 18:08
An: Stata
Betreff: st: simulate using lroc

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



The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the
e-mail
contains patient information, please contact the Partners Compliance
HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in
error
but does not contain patient information, please contact the sender and
properly
dispose of the e-mail.

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/