11.6.5.2. Drawing the parameters

The posterior distributions of the parameters can be visualised using the dedicated instance of drawParameters, whose prototype is identical to that discussed in Drawing the parameters.

void drawParameters(TString sTitre, const char *variable = "*", Option_t * option = "");

The only difference from the standard drawParameters method in TCalibration is that this version automatically accounts for the burn-in period and the lag (see Investigating the quality of the samples through diagnostics and plots for details). Specifically, the first samples of each chain are discarded according to the burn-in value, and the remaining samples are thinned using the specified lag (i.e., one sample is retained out of every lag iterations).

An example of this function is shown in Figure 13.75.