Ventana software support forum

Hi everyone, I have some problems with calibration optimization; How do I know for which parameters I should define payoffs? Can I set it for all the parameters I have imported data? Can I use 1/standard deviation for weights of the selected variables/parameters? How do I further know which model pa...

Thanks, but then I get the following warning: WARNING: Simulation starts before first time for exogenous variable - N conc Marly in. WARNING: Simulation starts before first time for exogenous variable - N conc Marly out. WARNING: Simulation starts before first time for exogenous variable - water Mar...

Attached the data and model

Hi, I am using Vensim Pro for a material flux analysis. Therefore, I created a model with variables (2 constants, 4 with time series data), auxiliaries (fluxes in mass per year) and levels (stocks of material). The variables are used in the functions describing the auxiliaries (e.g. influx Marly N =...