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From |
Austin Nichols <austinnichols@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Programming Stata |

Date |
Wed, 17 Aug 2011 08:12:15 -0400 |

natasha agarwal <agarwana2@googlemail.com> Seriously? Search for "balanced" in the first link provided: http://stata.com/meeting/chicago11/materials/chi11_wooldridge.pdf On Wed, Aug 17, 2011 at 5:57 AM, natasha agarwal <agarwana2@googlemail.com> wrote: > Hi Austin, > > You are absolutely right. This has got to do with Woolridge's APE stuff. > > I had a look at the links you posted (thanks for that) and it has got > me a little confused. > > Is the APE calculation meant only for balanced panel (as his data is balanced)? > > Thanks > Natasha > > > > On Tue, Aug 16, 2011 at 3:57 PM, Austin Nichols <austinnichols@gmail.com> wrote: >> natasha agarwal <agarwana2@googlemail.com>: >> I am guessing this is related to Wooldridge's APE stuff: >> http://stata.com/meeting/chicago11/materials/chi11_wooldridge.pdf >> http://ideas.repec.org/p/boc/nsug08/17.html >> http://stata.com/meeting/snasug08/abstracts.html#wooldridge >> >> I have some programs from 2007 or 2008 to calculate the APE, but I >> never released them, as I was working on a large-grain parallelized >> bootstrap to speed up the SE calculations that I never finished. I >> guess I should revisit those programs, since there seems to be an >> ongoing demand, but there is more than enough Stata code in >> Wooldridge's presentations to help you write your own program for a >> specific application. >> >> One thing--in your program below you put -xb- as an option to -gen- >> when you mean -predict-. Whenever you write a -program-, start by >> running the commands interactively first, to debug your code. >> >> On Tue, Aug 16, 2011 at 10:17 AM, Nick Cox <n.j.cox@durham.ac.uk> wrote: >>> In addition to Neil's comments, >>> >>> 1. There is no obvious gain from writing this as a program. >>> You might as well just run these commands in a do-file. Of course, this may be under development. >>> >>> 2. The line >>> >>> xtprobit expdum 'x', re >>> >>> will not work as the same character ' is used for both delimiters. You need >>> >>> xtprobit expdum `x', re >>> >>> Nick >>> n.j.cox@durham.ac.uk >>> >>> Neil Shephard >>> >>> If you are going to write it as a program then you should save it as >>> [filename].ado (not [filename].do as you are implying) and place it in >>> one of your systems -adopath-'s (to see what these are simply type >>> -adopath- in Stata. >>> >>> See [U] 16-18 for greater details on "Do-Files" (Chapter 16) >>> "Ado-Files (Chapter 17) and "Programming Stata (Chapter 18). >>> >>> On 16 August 2011 13:41, natasha agarwal <agarwana2@googlemail.com> wrote: >>> >>>> I am trying to write and run a program in Stata. The program I define >>>> is as follows and I save it in the do-file >>>> >>>> capture program drop fdi >>>> program fdi, rclass >>>> local x " lnvfdi mfdi" >>>> xtprobit expdum 'x', re >>>> gen double x1b1hat, xb >>>> gen double scale = normalden(x1bhat1) >>>> gen double pe1=scale*_b[lnvfdi] >>>> summarize pe1, meanonly >>>> return scalar ape1=r(mean) >>>> drop x1b1hat scale pe1 >>>> end >>>> >>>> When I type fdi, I get an error invalid file name. >>>> >>>> Can anyone please help me? * * 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/

**Follow-Ups**:**Re: st: Programming Stata***From:*natasha agarwal <agarwana2@googlemail.com>

**References**:**st: Programming Stata***From:*natasha agarwal <agarwana2@googlemail.com>

**Re: st: Programming Stata***From:*Neil Shephard <n.shephard@sheffield.ac.uk>

**RE: st: Programming Stata***From:*Nick Cox <n.j.cox@durham.ac.uk>

**Re: st: Programming Stata***From:*Austin Nichols <austinnichols@gmail.com>

**Re: st: Programming Stata***From:*natasha agarwal <agarwana2@googlemail.com>

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