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From |
"Gabi Huiber" <ghuiber@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: strange global macros |

Date |
Thu, 24 Apr 2008 09:45:15 -0400 |

Keith, Thank you for the clarification. This is exactly what I needed. So, if I had declared gen long date_cohort=. instead of gen date_cohort=. when I set up the log file, all would have been fine. Perfect. Thanks again, Gabi On 4/23/08, Keith Dear <keith.dear@anu.edu.au> wrote: > Hi Gabi, > Macros are strings, neither float nor integer. Your macro $t contains > "20080421" (without the quotes of course). You need to be careful about the > datatype of the variable to which you assign a macro value, not the macro > itself. If you make date_cohort a "long" it will hold numbers like 20080421 > exactly. > HTH > kd > > > At 02:13 AM 24/04/2008, you wrote: > > > Got it, thank you. > > > > Do you know if there is any way to get macros to recognize large > > integers as such and respond by storing them as long instead of float? > > > > For this particular project I just replaced date_cohort with a Stata > > date formated as %d. It's even easier on the human eye than the > > YYYYMMDD format and it sorts properly. > > > > Gabi > > > > On 4/23/08, Austin Nichols <austinnichols@gmail.com> wrote: > > > . di 20080421 > > > 20080421 > > > > > > . di float(20080421) > > > 20080420 > > > > > > See > > > help data_types > > > and note that if date_cohort were double or long you would face no > > > precision problem. > > > > > > > > > > > > > > > On Wed, Apr 23, 2008 at 11:09 AM, Gabi Huiber <ghuiber@gmail.com> > wrote: > > > > I am having some trouble getting global macros to represent numbers > properly. > > > > > > > > Every week I receive some csv files that are named things like > file_20080331.csv > > > > > > > > I use these files in a series of do-files that reference them as > > > > file_${t}.csv, and all is well. > > > > > > > > However, when at the very end I produce a rolling summary report file > > > > where I want to record the date in the same format, I am getting a > > > > surprise result. I am doing this: > > > > > > > > [...] > > > > local lastline=${cycles}+1 > > > > set obs `lastline' > > > > replace date_cohort=${t} in `lastline' > > > > [...] > > > > > > > > Yet the date_cohort observation corresponding to ${t}=20080331 is > > > > 20080332; and the one that corresponds to ${t}=20080421 is 20080420. > > > > > > > > It's strange, because if ${t} were anything but 20080421, my do-files > > > > would produce a "file not found" error when trying to look for that > > > > day's csv file. So I am sure that ${t} stores the correct value. What > > > > I am not sure of is why it is rendering it with a day off in either > > > > direction. > > > > > > > > Can anybody help? > > > > > > > > Thank you, > > > > > > > > Gabi > > > > * > > > * > > > * For searches and help try: > > > * http://www.stata.com/support/faqs/res/findit.html > > > * http://www.stata.com/support/statalist/faq > > > * http://www.ats.ucla.edu/stat/stata/ > > > > > * > > * For searches and help try: > > * http://www.stata.com/support/faqs/res/findit.html > > * http://www.stata.com/support/statalist/faq > > * http://www.ats.ucla.edu/stat/stata/ > > > > > Dr Keith B.G. Dear > Senior Fellow in Biostatistics > National Centre for Epidemiology and Population Health > Australian National University > Canberra, ACT 0200, Australia > Tel: 02 612 54865, Fax: 02 612 50740 > http://nceph.anu.edu.au/Staff_Students/staff_pages/dear.php > CRICOS provider #00120C > > http://canberragliding.org/ > > > * > * For searches and help try: > * http://www.stata.com/support/faqs/res/findit.html > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: strange global macros***From:*"Gabi Huiber" <ghuiber@gmail.com>

**Re: st: strange global macros***From:*"Austin Nichols" <austinnichols@gmail.com>

**Re: st: strange global macros***From:*"Gabi Huiber" <ghuiber@gmail.com>

**Re: st: strange global macros***From:*Keith Dear <keith.dear@anu.edu.au>

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