I keep getting an error message

Dynare help (legacy posts)
1

hi all,
after writing codes for a stochastic neoclassical growth model, i ran it, but i keep getting this error message:

??? Error: Unexpected MATLAB operator.
Error in ==> dynare at 132
evalin(‘base’,fname) ;

but evalin is a command that is built in matlab. so why is it unexpected?
thanks,
sam hwang

2

Hi,

you may have made a syntax error. Could you post you mod-file please?

Best

3

Maybe evalin itself is not the problem. All it does is call a command with the name contained in the string fname. Maybe the string contains something Matlab does not understand (probably an empty space). What is the name of your .mod-file? Dynare builds a Matlab .m-file with the same name as the .mod file and then calls it as a function in this line. If the name of the .mod-file contains empty spaces or characters like “;” “,” “.” or braces, there might be problems. You should be able to see the name of the .m-file created in your directory. Does it look like a regular function name? If this is not the case, just rename the .mod-file.

4

here is my .mod file:

periods 1000;
var w n t_n c k y x g d b R r lamda;
varexo e1 e2 e3 e4 e5;

parameters ros rod theta cdy xdy rhog beta_t bdy t_c t_k delta delta_t psi t_nbar z_bar eta beta kappa;

ros=0.7;
rod=0.38;
theta=0.62;
cdy=0.59;
xdy=0.27;
rhog=0.9;
beta_t=0.9;
bdy=2.52;
t_c=0.05;
t_k=0.36;
delta=0.02;
delta_t=0.025;
psi=0.05;
t_nbar=0.28;
z_bar=1.005;
eta=2;
beta=0.8;
kappa=0.6;

model;
w=(ros)n+(1/(1-t_nbar))t_n+c+e1;
w=(rod)(k-n);
y=thetan+(1-theta)k+e2;
y=cdyc+xdyx+g;
g=rhogg(-1)+e3;
d=g+(1/beta_t)b(-1)+(bdy/beta_t)(R-e2)-t_ccdyc-t_k*(1-theta-(delta/delta_t)xdy)k-t_k(1-theta)r;
psid-e4=thetat_n+thetat_nbar(w+n);
(1-psi)*d+e4=b;
k=(1-delta_t)k(-1)+delta_tx(-1)-e2;
r=-(theta/(1-theta))*w;
R=(1-(1-(1-t_k)*delta)beta(z_bar^(-eta)))r;
lamda=-etac-(1-eta)kappan;
0=lamda(+1)-lamda+R(+1)+e5;
end;

initval;
w=0;
n=0;
t_n=0;
c=0;
k=0;
y=0;
x=0;
g=0;
d=0;
b=0;
R=0;
r=0;
lamda=0;
end;

shocks;
var e1;
stderr 1;
var e2;
stderr 1;
var e3;
stderr 1;
var e4;
stderr 1;
var e5;
stderr 1;
end;

steady;
stoch_simul(dr_algo=0, periods=1000, irf=40);
rplot w n t_n c k y x g d b R r lamda;

and i did not download this from the web–i created with in the m-file editor and save it as .mod file…i don’t know a standard way to create .mod file so that’s what i did. and the name of this .mod file is pset2.mod.