i’m trying to estimate the parameters of my new keynesian model with bayeasian techniques (i’m replicating the code by stephan adjemian available on dynare summer school web site). i have a time series for every endogenous variable i’m working with (i’m not simulating them) but i cannot make my code run because of this error message, that i cannot interpret:
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 940
Error in ==> dynare_estimation at 62
Error in ==> stimabayes_modellogali at 156
Error in ==> dynare at 102
i think the problem is in my data file, but i cannot understand where and what is this.
can anyone help me? what i should control with this kind of error?
thanks in advance,