Dynare forums

Hi!

I've just begun learning dynare, and i'dont exactly understand the difference between histval and initval in the case of deterministic modells.
For example, i'd like to simulate the basic acceletar-multiplicator modell of Samuelson, here is the code:

Code: Select all

var y c i;

varexo g;

parameters c_a gamma psi;
c_a=1;
gamma=0.5;
psi=1;

model;
c=c_a+gamma*y(-1);
i=gamma*psi*(c-c(-1));
y=i+c+g;
end;

check;

histval;
y(0)=1;
c(0)=0.8;
end;

shocks;
var g;
periods 4:9;
values 5.1;
end;

simul(periods=100);


But it wont work, and i think it needs histval-s too. Please help!

Thanks!