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From |
Philip Jones <pjones.statalist@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Passing value of an observation to a user-written function fails |

Date |
Sun, 27 May 2012 13:18:45 -0400 |

Thank you Daniel - pre-evaluating the arguments works! Your help is much appreciated. Phil On Sun, May 27, 2012 at 12:48 PM, daniel klein <klein.daniel.81@googlemail.com> wrote: > Phil, > > note that what you have is not a function, but a (r-class) program. > You may not write your own functions in Stata, for that use Mata. > > I also do not see the need to loop over observations here, since Stata > oparates row-wise per default. > > forv j = 1/`= _N' { > replace <oldvar> = <somevar[`i']> <operator> <anothervar[`i']> in `i' > } > > is exactly the same as > > replace <oldvar> = <somevar> <operator> <anothervar> > > The only difference is, that the second line of code will execute much faster. > > If you decide you really need the (very slow) loop, evaluating the > arguments before passing them to your program might solve your > problem. > > Instead of > > atc start_time[`i'] end_time[`i'] > > code > > atc `= start_time[`i']' `= end_time[`i']' > > Best > Daniel > > -- > I have a user-written function "atc.ado" which accepts two integers as > arguments [...] The return value of my function is in r(units). > > [...]The code > needs to execute independently for each observation, as the times are > different for each observation. [...] > > Can anyone help me? I'm sure there is something simple I can do to > solve this problem, but I'm at a loss. > > Many thanks! > > Phil > * > * 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/

**References**:**Re: st: Passing value of an observation to a user-written function fails***From:*daniel klein <klein.daniel.81@googlemail.com>

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