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From |
KONSTANTARAS KONSTANTINOS <dinokon@otenet.gr> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: problem with perturb |

Date |
Sat, 27 Dec 2008 19:29:27 +0200 (EET) |

Dear Statalisters, Seasons Greetings! I run into a problem in my attempting to run perturb for a multinomial logit application; apparently the problem must have something to do with the way I have defined the covariate to be perturbed, as from what I have found setting trace on the application produces an Invalid Syntax Error as it tries to read the number of pfactors defined as perturbation variables, namely n_par in the ado file; the traced problem is as follows: ....output ommitted.. - forval k=1/`niter' { = forval k=1/100 { - forval k=1/`niter' { - forval i=1/`n_pvar' { = forval i=1/ { invalid syntax local pv: word `i' of `pvars' local pr: word `i' of `prange' `how' replace `pv`i'' = `pv'+`perturb'*`pr' } i.e. it does not recognize the number of factors I have input (1), although it has previously produced the initial classification probabilities, adjusted expected table and final reclassification probabilities having recognized that I am using it as factor –see output below. The command I am issuing is as follows: perturb2: mlogit depn defone ldef3 sizmc remc recumz _Iyear_1998 _Iyear_1999 _Iyear_2000 _Iyear_2001 _Iyear_2002 _Iyear_2003 if year>1997? Any help would be greatly appreciated.

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