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| From | Nick Cox <njcoxstata@gmail.com> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: regexr string function very slow in Stata13 |
| Date | Fri, 13 Dec 2013 10:28:48 +0000 |
Depends what the question is, really. But you're showing that Stata 13 is slower at the same job than Stata 12. That's, I guess, an undesired side-effect of rewriting string functions to cope with long strings, even if you don't have long strings. Nick njcoxstata@gmail.com On 13 December 2013 10:20, Nicola Tommasi <nicola.tommasi@univr.it> wrote: > Hi all > On my computer they are installed Stata12 and Stata13, but regexr function > run very slowly in Stata13. Here a log file > Any idea? > > > > . count; > 730649 > > . di "`c(stata_version)' - `c(os)' - `c(osdtl)' - `c(machine_type)' - > `c(processors)'"; > 13.1 - Windows - 64-bit - PC (64-bit x86-64) - 4 > > . timer on 1; > > . gen var2 = regexr(var1,"<[^<>]+>",""); > > . timer off 1; > > . timer list 1; > 1: 54.88 / 1 = 54.8830 > > . timer on 2; > > . replace var2 = regexr(var2,"<[^<>]+>",""); > (730649 real changes made) > > . timer off 2; > > . timer list 2; > 2: 54.14 / 1 = 54.1400 > > > > > > . count; > 730649 > > . di "`c(stata_version)' - `c(os)' - `c(osdtl)' - `c(machine_type)' - > `c(processors)'"; > 12.1 - Windows - 64-bit - PC (64-bit x86-64) - 4 > > . timer on 1; > > . gen var2 = regexr(var1,"<[^<>]+>",""); > > . timer off 1; > > . timer list 1; > 1: 1.43 / 1 = 1.4300 > > . timer on 2; > > . replace var2 = regexr(var2,"<[^<>]+>",""); > (730649 real changes made) > > . timer off 2; > > . timer list 2; > 2: 0.49 / 1 = 0.4860 > > > > > -- > _______________________________________________________________________ > dott. Nicola Tommasi > Centro Interdipartimentale di Documentazione Economica (C.I.D.E) > University of Verona > via dell'Artigliere, 19 > 37129 Verona (Italy) > tel.: +39-045-8028048 > fax.: +39-045-8028047 > Skype: nicola.tommasi > ________________________________________________________________________ > > * > * 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/