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From |
Nick Cox <njcoxstata@gmail.com> |

To |
"statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
Re: st: Loop to replace values of a variable |

Date |
Wed, 18 Dec 2013 13:49:34 +0000 |

For -2.5(0.1)2.1 or -2.5(0.1)2.5, you can still divide integers by 10. No loop needed as _n always gives you integers in sequence. Nick njcoxstata@gmail.com On 18 December 2013 13:44, emanuele mazzini <madsoenistata@gmail.com> wrote: > Oh, yes, I see. Thank you very much for your answers, but I may have > oversimplified, since what you said would fit in this case, as x is > exactly = _n/10, but my problem is slightly more complex. > > What if the values I want to replace go from -2.5 to 2.15, still with > a 0.1 interval? In this case I'd still need a loop, right? > > 2013/12/18 Maarten Buis <maartenlbuis@gmail.com>: >> no need to loop: >> >> gen x = _n*.1 >> >> Hope this helps, >> Maarten >> >> >> On Wed, Dec 18, 2013 at 2:33 PM, emanuele mazzini >> <madsoenistata@gmail.com> wrote: >>> Dear all statalist users, >>> >>> I would like to program a (relatively) simple loop to replace the >>> values of a variable I created, but I cannot figure it out how to >>> write the syntax. >>> >>> The structure of my data is very simple: >>> I have 300 observations and a variable, say x, that in the first cell >>> (i.e. for n=1) is equal to 0.1, while it is missing for all other 299 >>> cells. Data look like: >>> >>> n x >>> 1 0.1 >>> 2 . >>> 3 . >>> 4 . >>> . >>> . >>> . >>> . >>> . >>> 299 . >>> 300 . >>> >>> I would like the loop to replace the missing values of my variable by >>> going from cell 2 to cell 300, and to have a replace that would be at >>> a 0.1 intervals, so as to obtain data that look like: >>> >>> n x >>> 1 0.1 >>> 2 0.2 >>> 3 0.3 >>> 4 0.4 >>> . >>> . >>> . >>> . >>> . >>> 299 29.9 >>> 300 30 >>> >>> I can obviously do it by hand, but a loop would be naturally much more >>> efficient! >>> Does anyone know how to make it? >>> >>> Thank you in advance. >>> * >>> * 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/ >> >> >> >> -- >> --------------------------------- >> 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/ > * > * 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/ * * 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: Loop to replace values of a variable***From:*Fabrizio Colella - 1348010 <colella.fabrizio@studbocconi.it>

**References**:**st: Loop to replace values of a variable***From:*emanuele mazzini <madsoenistata@gmail.com>

**Re: st: Loop to replace values of a variable***From:*Maarten Buis <maartenlbuis@gmail.com>

**Re: st: Loop to replace values of a variable***From:*emanuele mazzini <madsoenistata@gmail.com>

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