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From |
- <dimpol7@googlemail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: forvalues |

Date |
Tue, 23 Oct 2012 14:02:43 +0100 |

Yes, you're right, so using levelsof takes care of these issues because it is more general. Thanks again On 23 October 2012 13:52, Henrik Støvring <STOVRING@biostat.au.dk> wrote: > Glad it worked, but actually I think, I was spot on: There is no value > of 1 in your "single" variable, as documented by -levelsof-. You could > account for this by using: > > forvalues i = 2/53 { > ...etc... > > although you again would run into trouble with no observations having > single equal to 40, 41, 44, etc. In short levelsof is the right solution > here, but you gave the impression that the single variable had all > values from 1 to 53, which was indeed not the case. > > Best, > > Henrik > > > On 10/23/2012 02:45 PM, - wrote: >> Thank you, >> there was no problem in the dataset, the "single" variable is made up >> of integers between 1 and 53. >> Because I tried lots of different things, it seemed to have a problem >> with using " forvalues i = ....", without declaring anything first, >> and similarly when I was trying to give the value of i to the "single" >> variable in the "if(single=='i')" expression. >> Eventually I was able to get it to work by writing the following: >> >> . levelsof single, local(singles) >> 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 >> 28 29 30 31 32 33 34 35 36 38 39 42 43 49 50 51 53: this was output >> >> . foreach single in `singles' { >> 2. tabstat agein2009 if(single==`single'), by(sexcat) stats(mean sd >> n min max median p10 p25 p75 p90) >> 3. } >> >> Then I got the output of the tables I need, iteratively, for each >> value of "single". >> >> Thank you for helping. >> >> >> On 23 October 2012 13:20, Henrik Støvring <STOVRING@biostat.au.dk> wrote: >>> ...which sounds like a problem of the dataset, not of the code. Try a >>> codebook of the variable -single- to see what values, it actually contains: >>> >>> codebook single >>> >>> -Henrik >>> >>> On 10/23/2012 02:14 PM, - wrote: >>>> It still won't do it, it says "no observations", but there are >>>> observations there... >>>> >>>> On 23 October 2012 13:09, Henrik Støvring <STOVRING@biostat.au.dk> wrote: >>>>> Your accents are off. You need to replace 'i' with `i' - note the >>>>> difference in the first accent. >>>>> >>>>> Best, >>>>> >>>>> Henrik >>>>> >>>>> On 10/23/2012 02:04 PM, - wrote: >>>>>> hello all, >>>>>> I'm trying to build a simple loop, and have looked at Help for >>>>>> "foreach" and "forvalues", but can't get it to work. I just want to >>>>>> set a variable i to take consecutive values from 1 to 53, so use >>>>>> forvalues i=1/53, then give its value to a variable in my data called >>>>>> "single" (refers to the number of samples for each person) which has >>>>>> integer values ranging from 1 to 53, and create tables of statistics >>>>>> for age in men and women. So there would be 53 tables of ages, one for >>>>>> each number of samples, summarized by sex. >>>>>> Haven't use loops in stata before, I write: >>>>>> >>>>>> forvalues i = 1/53 { >>>>>> 2. tabstat age if(single=='i'), by(sexcat) stats(mean sd n min max >>>>>> median p10 p25 p75 p90) >>>>>> 3. } >>>>>> >>>>>> but the message is that 'i' is an invalid name. If I use >>>>>> if(single==i), it says "i not found". Can anyone tell me what I'm >>>>>> doing wrong? >>>>>> >>>>>> Thank you all >>>>>> * >>>>>> * 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/ >>>>>> >>>>> -- >>>>> >>>>> *Henrik Støvring, PhD* >>>>> Associate professor >>>>> stovring@biostat.au.dk >>>>> Phone +45 8716 7991 >>>>> Fax +45 8716 7305 >>>>> Web: au.dk/en/stovring@biostat <http://au.dk/en/stovring@biostat> >>>>> >>>>> >>>>> >>>>> Department of Public Health >>>>> Biostatistics >>>>> University of Aarhus >>>>> Bartholins Allé 2, Bldg 1261, 217 >>>>> DK-8000 Aarhus C >>>>> Denmark >>>>> >>>>> >>>>> Department of Public Health, Aarhus University >>>>> >>>>> * >>>>> * 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/ >>>> >>>> >>> -- >>> >>> *Henrik Støvring, PhD* >>> Associate professor >>> stovring@biostat.au.dk >>> Phone +45 8716 7991 >>> Fax +45 8716 7305 >>> Web: au.dk/en/stovring@biostat <http://au.dk/en/stovring@biostat> >>> >>> >>> >>> Department of Public Health >>> Biostatistics >>> University of Aarhus >>> Bartholins Allé 2, Bldg 1261, 217 >>> DK-8000 Aarhus C >>> Denmark >>> >>> >>> Department of Public Health, Aarhus University >>> >>> * >>> * 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/ >> >> > > -- > > *Henrik Støvring, PhD* > Associate professor > stovring@biostat.au.dk > Phone +45 8716 7991 > Fax +45 8716 7305 > Web: au.dk/en/stovring@biostat <http://au.dk/en/stovring@biostat> > > > > Department of Public Health > Biostatistics > University of Aarhus > Bartholins Allé 2, Bldg 1261, 217 > DK-8000 Aarhus C > Denmark > > > Department of Public Health, Aarhus University > > * > * 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/

**References**:**st: forvalues***From:*- <dimpol7@googlemail.com>

**Re: st: forvalues***From:*Henrik Støvring <STOVRING@biostat.au.dk>

**Re: st: forvalues***From:*- <dimpol7@googlemail.com>

**Re: st: forvalues***From:*Henrik Støvring <STOVRING@biostat.au.dk>

**Re: st: forvalues***From:*- <dimpol7@googlemail.com>

**Re: st: forvalues***From:*Henrik Støvring <STOVRING@biostat.au.dk>

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