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From |
Maarten Buis <maartenlbuis@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Terminating a loop when a certain value is reached. |

Date |
Tue, 2 Apr 2013 10:31:54 +0200 |

On Mon, Apr 1, 2013 at 8:26 PM, Stephen Cranney wrote: > Basically, I'm > trying to make a microsimulation program in Stata because the other > microsimulation programs are very technical and require sophisticated > programming knowledge if you want to customize them to suit your > needs, whereas a microsimulation program in Stata would be much more > accessible and customizable. Hence my interest in keeping the code in > Stata, even though alternative coding languages would be more > efficient overall. Loops in such simulations in Stata are often unnecessary. Not only are the unnecessary, they often make your code more complex than it needs to be and are thus a source of error (as you have noticed). The magic commands/prefixes for avoiding such loops in Stata are -by- and -expand-. If the purpose of this excercise is to make use of the simplicity of the Stata language, then you really need to make heavy use of these commands to avoid loops. Here is a presentation on how to create such demographic micro simulations without looping in Stata. <http://www.maartenbuis.nl/presentations/konstanz11.pdf> Hope this helps, Maarten --------------------------------- Maarten L. Buis WZB Reichpietschufer 50 10785 Berlin Germany http://www.maartenbuis.nl --------------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Terminating a loop when a certain value is reached.***From:*Stephen Cranney <scranney@sas.upenn.edu>

**References**:**st: Terminating a loop when a certain value is reached.***From:*Stephen Cranney <scranney@sas.upenn.edu>

**Re: st: Terminating a loop when a certain value is reached.***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: Terminating a loop when a certain value is reached.***From:*Stephen Cranney <scranney@sas.upenn.edu>

**Re: st: Terminating a loop when a certain value is reached.***From:*njcoxstata@gmail.com

**Re: st: Terminating a loop when a certain value is reached.***From:*Stephen Cranney <scranney@sas.upenn.edu>

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