[Limdep Nlogit List] GROUPED DATA with Sample selection

[Suman Majumdar]

Thank you Dr. Green.
It worked.
Suman
 
> Date: Wed, 15 Sep 2010 05:39:14 -0400
> From: wgreene at stern.nyu.edu
> To: limdep at limdep.itls.usyd.edu.au
> Subject: Re: [Limdep Nlogit List] GROUPED DATA with Sample selection
> 
> Suman. You can set the value of Y to 1 when NR=0. That should
> avoid the problem. The program will know not to use the artificial
> filler value.
> /B. Greene
> ----- Original Message -----
> From: "Suman Majumdar" <suman.06 at hotmail.com>
> To: limdep at limdep.itls.usyd.edu.au
> Sent: Wednesday, September 15, 2010 12:34:26 AM GMT -05:00 Colombia
> Subject: [Limdep Nlogit List] GROUPED DATA with Sample selection
> 
> 
> Hi:
> I am trying to estimate a "Grouped Data Regression with sample selection."
> My dependent variables are Y (for Grouped Data) and NR (for sample selection).
> Now when I run the regression, I get the following error.
> 
> Error 49: GROUPED Y > # limits + 1. Bad data or too few limit values.
> 
> 
> I think I am getting this error because I have missing values for Y.
> I have missing values because Y is not observed when NR is 0.
> I believe this is what it should be. But I don't know why I am getting this error.
> 
> I would appreciate any help or suggestions.
> 
> Thanks.
> Suman 
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