Drawing an isocurve on Dynare

Stochastic simulations
6

The basic code should be something along the lines of

y_pos=strmatch('Y',M_.endo_names,'exact');
alpha_parameters = 0.1:0.05:1;
delta_parameters = 0.1:0.3:0.8;
[alpha_mat, delta_mat]=meshgrid(alpha_parameters,delta_parameters);

temp_mat=NaN(size(alpha_mat));
for alpha_iter=1:length(alpha_parameters)
    for delta_iter=1:length(delta_parameters)
        set_param_value('alpha',alpha_mat(delta_iter,alpha_iter));
        set_param_value('delta',delta_mat(delta_iter,alpha_iter));
        [oo_.steady_state,M_.params,info] = steady_(M_,options_,oo_);
        if ~info
            temp_mat(delta_iter,alpha_iter)=oo_.steady_state(y_pos);
        end
    end
end;

contour(alpha_mat,delta_mat,temp_mat)

But you most probably need a steady_state_model-block as the steady state is not found for many parameter combinations.