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| From | Nick Cox <njcoxstata@gmail.com> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: xtserial error: "no observations" |
| Date | Mon, 8 Apr 2013 19:02:05 +0100 |
Chuong Huynh has a good point. But there is another solution if your times are regular, but with gaps. Use the -delta()- option of -tsset-. Nick njcoxstata@gmail.com On 8 April 2013 16:11, chuong huynh <chuonghn90@gmail.com> wrote: > you should check: Your data must not discrete ( ex: 2000,2001,2002 > Not: 2000,2002,2004 - if this is your timeserie data, you can change > to 1,2,3,4 in time variable). I'm not good English, hope you > understand > > 2013/4/8 Nick Cox <njcoxstata@gmail.com>: >> You need to tell us more about exactly what you typed and the >> incidence of missing values. >> >> In addition, note that -xtserial- is user-written, so that you are >> expected to explain that and say where it comes from. >> >> I doubt that having 386 observations is itself a problem. >> >> Nick >> njcoxstata@gmail.com >> >> On 8 April 2013 15:34, Rodrigo Badilla <rodrigo.badilla@gmail.com> wrote: >> >>> Thanks for you reply and information, i did checked my variables and >>> are not strings... probably the missing values could be the answer... >>> >>> anyway i have been read that autocorrelation test with xtserial should >>> be used with panel data with a large number of data, could be this in >>> relation with my problem ( i have only 386 samples) >> >> 2013/4/8 Nick Cox <njcoxstata@gmail.com>: >> >>>> This typically means that >>>> >>>> either some variable you think is numeric is really string >>>> >>>> or some variable contains missing values, prohibiting some calculation. >>>> >>>> We can't say more without knowing more about your data. >> >> On 8 April 2013 13:52, Rodrigo Badilla <rodrigo.badilla@gmail.com> wrote: >> >>>>> I am triying to run a autocorrelation tests with xtserial command, >>>>> lamentably only get this error output: "no observations" previously i >>>>> set my data with xtset command, my data set have 386 samples. >> * >> * 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/ > > > > -- > Huỳnh Ngọc Chương > SĐT: 0989.707.458 > > * > * 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/