Dynare forums

Hello

I am using the dynare 4.2.4. with MATLAB 7.1.0.246 R14 on Windows XP.
I think i met the same problem with a post as viewtopic.php?f=1&t=2580

My error message is

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??? Error using ==> chol
Matrix must be positive definite.

Error in ==> metropolis_hastings_initialization at 52
d = chol(vv);

Error in ==> random_walk_metropolis_hastings at 43
[ ix2, ilogpo2, ModelName, MhDirectoryName, fblck, fline, npar, nblck, nruns, NewFile, MAX_nruns, d ] = ...

Error in ==> dynare_estimation_1 at 1057
feval(options_.posterior_sampling_method,'DsgeLikelihood',options_.proposal_distribution,xparam1,invhess,bounds,gend,data,...

Error in ==> dynare_estimation at 62
dynare_estimation_1(var_list,varargin{:});

Error in ==> azerbaijan at 788
dynare_estimation(var_list_);

Error in ==> dynare at 132
evalin('base',fname) ;

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can any one helpme to fix this problem and move on to run MH esimaion??

My codes are attached.

Thank you.

Cho youngtak

Please upgrade to Dynare 4.3.1, and see if you still get the same error. It may also be that the computed posterior mode is not a true local maximum; in that case you may want to try other initial values, or another optimizer.