Re: st: somersd error message

[Barry Quinn <brotherbarry@me.com>]

Roger, 

It is very strange as after restarting and running -mata: mata query-  I get 
  Mata settings
        set matastrict      off
        set matalnum        off
        set mataoptimize    on
        set matafavor       space      may be space or speed
        set matacache       400        kilobytes
        set matalibs        lmatabase;lmataado;lmataopt;lmatasem;lsomersd
        set matamofirst     off

which now includes the lsomersd.mlib.

But still this previous error message persists

Barry 

On 31 Oct 2012, at 11:08, Roger B. Newson wrote:

> Yes, as Maarten says, that is essentially the problem, and it is one that I am commonly asked about privately. My standard answer is given below.
> 
> Best wishes
> 
> Roger
> 
> **** BEGINNING OF STANDARD ANSWER - CUT HERE
> 
> I think the solution here is to exit Stata after downloading -
> somersd-, and then to launch Stata again, and then to try to use
> -somersd- (or -cendif- or -censlope-).
> 
> The reason that this usually works is that -somersd- contains
> a Mata library, containing several Mata programs such as -
> tidottree()-. Stata usually has a path of Mata libraries,
> which it searches for Mata programs. If you type, in Stata,
> 
> . mata: mata query
> 
> then Stata will give some output similar to:
> 
> -------------------------------------------------------------------------------
>   Mata settings
>       set matastrict      off
>       set matalnum        off
>       set mataoptimize    on
>       set matafavor       space      may be space or speed
>       set matacache       400        kilobytes
>       set matalibs lmatabase;lmataado;lmataopt;lmatasem;lmoremata;lmoremata10;lsomersd;ltt;l_cfrmt
>       set matamofirst     off
> 
> This strange output gives the Mata settings, which include -set
> matalibs-, which gives the path of Mata libraries searched. In
> this case, this path includes -lsomersd.milb-, the Mata library
> installed with the -somersd- package.
> 
> However, in some versions of Stata, if you install -somersd-,
> then the -set matalibs- path is not immediately updated to
> include - lsomersd.mlib-. In these versions of Stata, if you
> exit and then re-launch, then Stata builds the new -set
> matalibs- path at launch time, by searching its ado-file path
> for -.mlib- files. At that point, Stata will find -
> lsomersd.mlib- and ad it to the path.
> 
> I hope this helps. Let me know if you have any more queries.
> 
> **** END OF STANDARD ANSWER - CUT HERE
> 
> 
> Roger B Newson BSc MSc DPhil
> Lecturer in Medical Statistics
> Respiratory Epidemiology and Public Health Group
> National Heart and Lung Institute
> Imperial College London
> Royal Brompton Campus
> Room 33, Emmanuel Kaye Building
> 1B Manresa Road
> London SW3 6LR
> UNITED KINGDOM
> Tel: +44 (0)20 7352 8121 ext 3381
> Fax: +44 (0)20 7351 8322
> Email: r.newson@imperial.ac.uk
> Web page: http://www.imperial.ac.uk/nhli/r.newson/
> Departmental Web page:
> http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/popgenetics/reph/
> 
> Opinions expressed are those of the author, not of the institution.
> 
> On 31/10/2012 11:01, Maarten Buis wrote:
>> --- On Wed, Oct 31, 2012 at 11:37 AM, Barry Quinn wrote:
>>> I am using Stata12 on a Mac and have recently used -ssc install- to install the above package.
>>> 
>>> i am continually get the following error when running the command
>>> 
>>> tidotforsomersd():  3499  tidottree() not found
>>>                  <istmt>:     -  function returned error
>>> r(3499);
>>> 
>>> my Stata12 is updated to the latest version and i have used the auto.dta example from the help file which also produces the above error.
>> 
>> I suspect that the problem is that -somersd- uses a pre-compiled Mata
>> function library. In order for Mata (and thus Stata ( and thus
>> -somersd-)) to use it, it first needs to add it to its index. However,
>> this does not happen automatically after you install a program with
>> -ssc-. The reason is that that would also clear the Mata (not Stata)
>> memory, which would be very un-stataish behavior for a Stata program
>> like -ssc-, though probably unproblematic in most cases. As soon as
>> you restart Stata, Stata will automatically index the necessary Mata
>> functions and -somersd- should run. Alternatively, you don't have to
>> restart Stata if you type -mata:mata mlib index-. Anyhow, if this is
>> the problem than this issue only bites in the Stata session in which
>> you installed -somersd-.
>> 
>> -- Maarten
>> 
>> 
>> ---------------------------------
>> Maarten L. Buis
>> WZB
>> Reichpietschufer 50
>> 10785 Berlin
>> Germany
>> 
>> http://www.maartenbuis.nl
>> ---------------------------------
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