Hi
I am working on a CGE model. I received this message
********************************************************************************
**** ERROR: CNS models must be square
This model contains 3270 equality rows and 3274 unfixed columns
MODEL STATISTICS
BLOCKS OF EQUATIONS 105 SINGLE EQUATIONS 3,270
BLOCKS OF VARIABLES 96 SINGLE VARIABLES 3,274
NON ZERO ELEMENTS 15,180 NON LINEAR NZ 7,319
DERIVATIVE POOL 20 CONSTANT POOL 1,367
CODE LENGTH 20,968
SINGLE =EX= EQUS 3,270 SINGLE UNFIXED VARS 3,274
*********************************************************************
How I could find the extra variables and fix the problem?
fixing a non square system in CNS
Re: fixing a non square system in CNS
Hi
If you have your equations cast in the typical ArrowDebreuFormat with zeroprofit conditions, market clearing conditions and income definitions, the only thing you can do is to map your variables to these equations (e.g. respectively production level, prices and incomes) and see if the number of (nonfixed) mapped variables equals the number of equations. Note, that you might have auxiliary equations for defining variables used in other equations (like L(i) =E= .....) for labor demand in a sector to be used in the market clearing equation.
Cheers
Renger
If you have your equations cast in the typical ArrowDebreuFormat with zeroprofit conditions, market clearing conditions and income definitions, the only thing you can do is to map your variables to these equations (e.g. respectively production level, prices and incomes) and see if the number of (nonfixed) mapped variables equals the number of equations. Note, that you might have auxiliary equations for defining variables used in other equations (like L(i) =E= .....) for labor demand in a sector to be used in the market clearing equation.
Cheers
Renger
____________________________________
Enjoy modeling even more: The lazy economist
Enjoy modeling even more: The lazy economist

 User
 Posts: 2
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Re: fixing a non square system in CNS
Dear Renger
Thank you!
I solved the problem.
Thank you!
I solved the problem.