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From |
Muhammad Anees <anees@aneconomist.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Package -ghansen- now available in SSC |

Date |
Fri, 2 Sep 2011 19:22:22 +0500 |

Thank you very much Nick, for your help. I have uninstalled the pachage by deleting all related files of the -ghansen- while the -ado unistall- showed an error. I reinstalled the -ghansen-package after deleting it. I made sure that the package has no traces in the directory after deleting and before new installation. Could you suggest how to get the old Mata cleared before installing the new files. I do have the same problem. I did the following . ado uninstall ghansen criterion matches more than one package and reinstalling the package resulted in the same error as . ghansen c y z e t, break(level) lagmethod(aic) maxlags(5) variable y z e t not found st_data(): 3500 invalid Stata variable name main(): - function returned error <istmt>: - function returned error On Fri, Sep 2, 2011 at 7:02 PM, Nick Cox <njcoxstata@gmail.com> wrote: > I don't know what "not working" means precisely. I have an unpublished > document which details 20 different senses of such vague expressions! > > Testing on 11 is clearly not a certification that the code works on 9.2. > > I did say that I wasn't certifying the program free of other problems. > However, I fixed the program for the specific bug in question and > found that Jorge's example commands seem to work fine on 10.1. > > I don't know what Muhammad did differently. You do need to flush the > old Mata code out of the way. > > . version > version 10.1 > > . webuse balance2 ,clear > (macro data for VECM/balance study) > > . ghansen y i c, break(level) lagmethod(aic) maxlags(5) > > Gregory-Hansen Test for Cointegration with Regime Shifts > Model: Change in Level Number of obs = 96 > Lags = 1 chosen by Akaike criterion Maximum Lags = 5 > > Test Breakpoint Date Asymptotic Critical Values > Statistic 1% 5% 10% > ------------------------------------------------------------------------------ > ADF -3.62 80 1978q4 -5.44 -4.92 -4.69 > Zt -3.89 82 1979q2 -5.44 -4.92 -4.69 > Za -23.90 82 1979q2 -57.01 -46.98 -42.49 > ------------------------------------------------------------------------------ > > . ghansen y i c, break(regime) lagmethod(fixed) maxlags(5) > > Gregory-Hansen Test for Cointegration with Regime Shifts > Model: Change in Regime Number of obs = 96 > Lags = 5 chosen by user Maximum Lags = 5 > > Test Breakpoint Date Asymptotic Critical Values > Statistic 1% 5% 10% > ------------------------------------------------------------------------------ > ADF -4.03 59 1973q3 -5.97 -5.50 -5.23 > Zt -4.75 62 1974q2 -5.97 -5.50 -5.23 > Za -25.29 62 1974q2 -68.21 -58.33 -52.85 > ------------------------------------------------------------------------------ > > . ghansen y i c, break(regimetrend) lagmethod(downt) level(0.99) trim(0.1) > > Gregory-Hansen Test for Cointegration with Regime Shifts > Model: Change in Regime and Trend Number of obs = 96 > Lags = 2 chosen by downward t-statistics Maximum Lags = 3 > > Test Breakpoint Date Asymptotic Critical Values > Statistic 1% 5% 10% > ------------------------------------------------------------------------------ > ADF -4.78 64 1974q4 -6.45 -5.96 -5.72 > Zt -4.52 63 1974q3 -6.45 -5.96 -5.72 > Za -30.30 63 1974q3 -79.65 -68.43 -63.10 > ------------------------------------------------------------------------------ > > . ghansen y i c, break(level) lagmethod(aic) maxlags(5) > > Gregory-Hansen Test for Cointegration with Regime Shifts > Model: Change in Level Number of obs = 96 > Lags = 1 chosen by Akaike criterion Maximum Lags = 5 > > Test Breakpoint Date Asymptotic Critical Values > Statistic 1% 5% 10% > ------------------------------------------------------------------------------ > ADF -3.62 80 1978q4 -5.44 -4.92 -4.69 > Zt -3.89 82 1979q2 -5.44 -4.92 -4.69 > Za -23.90 82 1979q2 -57.01 -46.98 -42.49 > ------------------------------------------------------------------------------ > > > 2011/9/2 Jorge Eduardo Pérez Pérez <perez.jorge@ur.edu.co>: >> Thank you Nick and Muhammad for helping me to identify this bug in the >> code. I developed the command in Stata 12, and tested it on both 11 >> and 12, but I was not aware on this change in the behavior of st_data >> across versions. >> >> According to Muhammad, the fix suggested by Nick is not working. >> Unfortunately, I don't have access to a machine with Stata 10 or 9 >> right now, so I can not confirm this right away. Once I get my hands >> on a machine with Stata 10 or 9, I will confirm whether the update >> works and publish an update. >> >> Users of versions 11 and 12 should be fine, >> >> Regards, >> _______________________ >> Jorge Eduardo Pérez Pérez >> >> >> >> >> On Fri, Sep 2, 2011 at 9:16 AM, Muhammad Anees <anees@aneconomist.com> wrote: >>> Yes Nick, he has confirmed by estimating my data over Stata 11 and 12. >>> >>> Is there a way to change the basics of ghansen.ado and allow it >>> working on Stata 10.1 if it is permissible, which I think would be >>> fine if referred. I have tried changing the line in the ado as you >>> suggested earlier, but that still gave the same problem. >>> >>> On Fri, Sep 2, 2011 at 5:32 PM, Nick Cox <njcoxstata@gmail.com> wrote: >>>> My guess is that Jorge developed the program under Stata 11 or higher. >>>> >>>> Nick >>>> >>>> On Fri, Sep 2, 2011 at 12:56 PM, Muhammad Anees <anees@aneconomist.com> wrote: >>>>> I am currently using Stata 10.1. Sorry for my late response to mention >>>>> the version. >>>>> >>>>> On Fri, Sep 2, 2011 at 3:57 PM, Muhammad Anees <anees@aneconomist.com> wrote: >>>>>> Yes, Nick you identified the right point. Also I have further >>>>>> discussed it with the author in personal email to show that the same >>>>>> command works when used only one right hand side variable which >>>>>> confirms the point raised by Nick. >>>>>> >>>>>> Anees >>>>>> >>>>>> On Fri, Sep 2, 2011 at 12:39 PM, Nick Cox <njcoxstata@gmail.com> wrote: >>>>>>> My guess is that there is no problem with Muhammad's data. >>>>>>> >>>>>>> There is a small problem with the code. Jorge is declaring -version >>>>>>> 9.2- for his Stata program, but probably developed his code under a >>>>>>> later version and did not actually test his code under version 9.2. >>>>>>> This is slightly risky as far as your users are concerned if they are >>>>>>> using an earlier version than you are. Recall that -version- is not a >>>>>>> time machine! (What it is and is not is discussed at greater length in >>>>>>> <http://www.stata.com/support/faqs/lang/version2.html>.) >>>>>>> >>>>>>> Also, Muhammad is not using the latest version of Stata; otherwise >>>>>>> this code should have worked. Recall that on Statalist you are >>>>>>> requested to make clear if you are not using the latest version. >>>>>>> >>>>>>> This line of Mata is biting >>>>>>> >>>>>>> x=st_data(.,X,touse) >>>>>>> >>>>>>> Jorge should for compatibility change this to >>>>>>> >>>>>>> x=st_data(., tokens(X), touse) >>>>>>> >>>>>>> In fact the problem is made clear by the error message. >>>>>>> >>>>>>> variable y z e t not found >>>>>>> >>>>>>> The version of -st_data()- on Muhammad's Stata thinks that he thinks >>>>>>> "y z e t" is a single variable name, because it doesn't parse on >>>>>>> spaces to make this a list of four variable names. It is of course not >>>>>>> a single variable name. >>>>>>> >>>>>>> In recent Statas, -st_data()- is more indulgent and will parse on >>>>>>> spaces for you. >>>>>>> >>>>>>> I didn't realise, or had forgotten, that -st_data()- had changed since >>>>>>> first introduced in Stata 9 until a thread started last month in >>>>>>> >>>>>>> http://www.stata.com/statalist/archive/2011-08/msg00403.html >>>>>>> >>>>>>> in which this difference was exposed as a cause of (my) misunderstanding. >>>>>>> >>>>>>> Any way, it is an easy fix, although I am not certifying that there >>>>>>> may not be other small problems of this type. >>>>>>> >>>>>>> Nick >>>>>>> >>>>>>> 2011/9/2 Jorge Eduardo Pérez Pérez <perez.jorge@ur.edu.co>: >>>>>>>> Dear Anees >>>>>>>> >>>>>>>> Could you send me your database, or could you replicate your problem >>>>>>>> using a Stata example dataset? I want to look at the problem more >>>>>>>> closely. >>>>>>>> >>>>>>>> If you want to send me your database, please do so directly to my >>>>>>>> email address, because attachments are forbidden in Statalist. >>>>>>>> >>>>>>>> _______________________ >>>>>>>> Jorge Eduardo Pérez Pérez >>>>>>>> >>>>>>>> >>>>>>>> On Fri, Sep 2, 2011 at 12:34 AM, Muhammad Anees <anees@aneconomist.com> wrote: >>>>>>>>> Thanks for your nice work, Baum and Pérez, facilitating to estimate >>>>>>>>> the Gregory and Hansen (1996) cointegration, which is most desirable >>>>>>>>> in a few cases. >>>>>>>>> >>>>>>>>> I have came up with a small query using the -ghensen- routine just >>>>>>>>> after installing it. I think it is related to mata type but I am >>>>>>>>> unable to sort out the issue. >>>>>>>>> >>>>>>>>> I have the following time series data, which is already -tsset-ed >>>>>>>>> >>>>>>>>> . des c y z e t >>>>>>>>> >>>>>>>>> storage display value >>>>>>>>> variable name type format label variable label >>>>>>>>> ------------------------------------------------------------------------------------------------------------------------------ >>>>>>>>> c float %9.0g >>>>>>>>> y float %9.0g >>>>>>>>> z float %9.0g >>>>>>>>> e float %9.0g >>>>>>>>> t float %9.0g >>>>>>>>> >>>>>>>>> and the application of -gehansen results in below >>>>>>>>> >>>>>>>>> ghansen c y z e t, break(level) lagmethod(aic) maxlags(5) >>>>>>>>> variable y z e t not found >>>>>>>>> st_data(): 3500 invalid Stata variable name >>>>>>>>> main(): - function returned error >>>>>>>>> <istmt>: - function returned error >>>>>>>>> >>>>>>>>> I would be thankful for helping me in my case. >>>>>>>>> >>>>>>>>> >>>>>>>>> Anees >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> 2011/9/2 Jorge Eduardo Pérez Pérez <perez.jorge@ur.edu.co>: >>>>>>>>>> Thanks to Christopher Baum, package -ghansen- has been uploaded to SSC. >>>>>>>>>> >>>>>>>>>> To install, write -ssc install ghansen- >>>>>>>>>> >>>>>>>>>> ghansen: Stata module to perform Gregory-Hansen test for cointegration >>>>>>>>>> with regime shifts. >>>>>>>>>> >>>>>>>>>> -ghansen- performs the Gregory-Hansen test for cointegration with >>>>>>>>>> regime shifts (structural breaks) proposed in Gregory and Hansen >>>>>>>>>> (1996). The test's null hypothesis is no cointegration against the >>>>>>>>>> alternative of cointegration with a single shift at an unknown point >>>>>>>>>> in time. >>>>>>>>>> ghansen makes use of Mata and requires Stata 9.2. > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > -- Regards Anees * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**RE: st: Package -ghansen- now available in SSC***From:*"Schaffer, Mark E" <M.E.Schaffer@hw.ac.uk>

**References**:**st: Package -ghansen- now available in SSC***From:*Jorge Eduardo Pérez Pérez <perez.jorge@ur.edu.co>

**Re: st: Package -ghansen- now available in SSC***From:*Jorge Eduardo Pérez Pérez <perez.jorge@ur.edu.co>

**Re: st: Package -ghansen- now available in SSC***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: Package -ghansen- now available in SSC***From:*Muhammad Anees <anees@aneconomist.com>

**Re: st: Package -ghansen- now available in SSC***From:*Muhammad Anees <anees@aneconomist.com>

**Re: st: Package -ghansen- now available in SSC***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: Package -ghansen- now available in SSC***From:*Jorge Eduardo Pérez Pérez <perez.jorge@ur.edu.co>

**Re: st: Package -ghansen- now available in SSC***From:*Nick Cox <njcoxstata@gmail.com>

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