Contents
Version number
System requirements
Year 2000 Compliance

Current Versions
LIMDEP 8.0
NLOGIT 3.0

System Requirements

LIMDEP AND NLOGIT are written for use on Windows driven microcomputers. LIMDEP and NLOGIT are compatible with Windows 95 and later Windows operating systems. The programs require 16 megabytes of memory and occupy approximately five to six megabytes on the local hard disk drive.

Program Limits

We are often asked about LIMDEP's specific internal limits. The following limits are relevant to the most common applications.

• Active Data Set
  Variables 900
  Observations 3,000,000+
  Total cells in data area limited by memory
  Namelists 10
  Variables in namelist 100
• Command Entry
  Characters in one command 2,500
  Characters in a stored procedure 2,500
  Commands in a stored procedure 50
  Stored procedures 10
  
• Model Size, General & Specific
  Number of parameters 150
  Equations for SURE & 3SLS 30
  Equations for WALD, NLSURE, GMM 20
  
• Panel Data Models
  Groups in fixed & random effects unlimited
  Regressors in fixed & random effects 100
  Intervals in TVCs for survival 50
  Periods in fixed effects logit 100
  Groups in time series/cross section 100
  
• NLOGIT
  Number of alternatives 100
  Branches in tree 25
  Limbs in tree 10
  Trunks in tree 5
  Number of attributes & constants 125
  
• Matrix & Scalar Algebra
  Number of active matrices 100
  Number of active named scalars 50
  Size of a matrix 22,500 cells
  Rows in data matrix unlimited
  
  

Year2K Compliance
All aspects of LIMDEP's Version 8.0 operation are fully Y2K compliant. There is no computation done anywhere in the program, for any purpose, that uses a two digit representation of a year.