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Re: st: CMP Error Message


From   Jeffrey Ferris <ferrij492@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: CMP Error Message
Date   Sat, 23 Mar 2013 18:53:29 -0400

I am using the most recent version, perhaps this is the issue. This
might also explain why the program would work on Thursday and not
since that time, because I have updated the program in that time. It
is a bit of a relief to know that this error is (most likely) not
caused by a problem on my end because I am out of troubleshooting
ideas. As per your advice, I will email David Roodman next to see if
he has any suggestions.

Thank you very much for your help,

Jeff

On Sat, Mar 23, 2013 at 4:24 PM, William Buchanan
<william@williambuchanan.net> wrote:
> Which version of -cmp- are you using? David Roodman released an update to the program only a few days ago and maybe something is different.
>
> Sent from my iPhone
>
> On Mar 23, 2013, at 12:34, John Luke Gallup <jlgallup@pdx.edu> wrote:
>
>> Jeffrey,
>>
>> This is pretty clearly a bug in -cmp-, where the Mata function cmp_lnL() is probably calling the function l(), which cannot handle the value of its argument.  This is not likely to be a problem you can fix, unless you are not using -cmp- correctly.  In any case, a program like -cmp- should ideally trap user errors rather than crashing.
>>
>> It is a little mysterious why -cmp- produced this error message when it apparently didn't during an identical previous run, but almost certainly something changed from one run to the next.
>>
>> I think your best bet is to contact the author of -cmp-, David Roodman (see the end of the -cmp- help file for his email address), and politely ask for help.
>>
>> John
>>
>> On Mar 23, 2013, at 8:32 AM, Jeffrey Ferris <ferrij492@gmail.com> wrote:
>>
>>> Hello,
>>>
>>> I am working with the user generated command CMP and I am having a
>>> strange problem that I am unable to diagnose. I am trying to estimate
>>> a system of equations with one probit equation and two mprobit
>>> equations (with no overlap between the multinomial models). Every time
>>> I try to run the model it proceeds normally until it tries to collect
>>> Halton draws and gives me the following error message:
>>>
>>> "I():  3300  argument out of range
>>>              cmp_lnL():     -  function returned error
>>>                <istmt>:     -  function returned error
>>> Mata run-time error"
>>>
>>> The strange thing is that I ran the exact same code Thursday night and
>>> it worked without problem. I have gone through every line of my code
>>> and cannot see what could be causing this failure. I also double
>>> checked that cmp is working correctly by running it with some older
>>> models without failure. Does anybody have any idea what could be going
>>> on or, more importantly, how I can rectify this problem? For those
>>> interested, here are the commands I used to generate this output:
>>>
>>> gen ind1=cond(treat_t==0,$cmp_mprobit,$cmp_out)
>>> gen ind2=cond(treat_t==1,$cmp_mprobit,$cmp_out)
>>> local 2step_m DstCityBdr_avg DistRds_avg DistIntHwy lntotstream_dens ///
>>> lnsubdivarea existhouse MeanElev_avg MeanSlope_avg ///
>>> Area100yr_dens depwat_avg hydgrp_C hydgrp_D
>>> foreach class in RC4 RC2 {
>>> local zone_int_rc `zone_int_rc' zone_`class' c.treat_t#c.zone_`class'
>>> }
>>> cmp (y= `zone_int_rc' minor_exempt_RC treat_t `2step_m' `years`i'') ///
>>> (zone_class= `2step_m' DistRiver_avg DistPStrm_avg DistIStrm_avg
>>> Watershed2-Watershed15, iia) ///
>>> (zone_class= `2step_m' DistRiver_avg DistPStrm_avg DistIStrm_avg
>>> Watershed2-Watershed15, iia) ///
>>> if `timeline`i'' & RCsum>0.5, difficult indicators($cmp_probit ind1 ind2) ///
>>> tech(dfp nr) cluster(ind) robust ghkdraws(10)
>>> outreg2 using cmp_rc`i'.csv, replace dec(3)
>>>
>>> Thank You,
>>>
>>> Jeff Ferris
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--
Jeffrey Ferris
PhD Student
University of Maryland, College Park
Agriculture and Resource Economic Consortium

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