[Limdep Nlogit List] Portion of new variables are created as 'missing' instead of 0-1

[abhaylidbe at gmail.com]

Hi,

I am creating new variables in NLOGIT using the following commands:

create;if(hwy_cl=1) frwy=1$
create;if(hwy_cl=2) ushwy=1$
create;if(hwy_cl=3) st_rt=1$
create;if(hwy_cl=4) cnty=1$
create;if(hwy_cl=5) munci=1$
create;if(hwy_cl=6) pvt=1$

However, portion of the newly created variable values are shown as ‘missing’ instead of binary 0-1. This happens only for few rows (the row numbers without ‘>>’ symbol). What does this means and why could this happen? Here is a screenshot of the Data Editor window:



Regards,
Abhay Lidbe