Steady State helper function output as a vector into Dynare

Steady state
1

Hi

I have a helper function that numerically calculates the steady state for two variables simultaneously. The output of this function is a 2x1 vector of the solution of the two variables.

When running the following I get the error “ERROR: dsge3.mod: line 153, cols 10-15: Symbol sol cannot take arguments.”

sol = fveq(.9/TM, 0.5 , ALPHA, BETA, DELTA, EPS, PHI, SIGMA, VARPHI, GAMMA, Zg, Zm, TM);
    ns = sol(1);
    Ns = sol(2);

The function is defined as

function [ns1, Ns1] = fveq(ns0, Ns0, ALPHA, BETA, DELTA, EPS, PHI, SIGMA, VARPHI, GAMMA, Zg, Zm, TM)
2

I would need to see the full files.

3

I managed to solve it by changing how my function outputs the variables. Now I use [ns Ns] = fun()

4

Dear icecat2005, I have a similar issue, and I would be interested to understand how you have written the system in the helper function.

function [ns1, Ns1] = fveq(ns0, Ns0, ALPHA, BETA, DELTA, EPS, PHI, SIGMA, VARPHI, GAMMA, Zg, Zm, TM)
???
end;

I tried with the fsolve, but adding the country code with the macro language that function is not working anymore.

5

The point was that you can only request scalar outputs. Thus, don’t return a vector but rather one output for each value.