[Limdep Nlogit List] GROUPED DATA with Sample selection

[William Greene]

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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