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### Start Simulation

This command will start the simulation for the active scenario if all required data have been specified. This means that the entered parameter set is first checked against the selected complexity modes. If some parameters are missing, a report will list them and the simulation will not start.

After successful completion of the parameter check the required input fields for the model system are prepared. The simulation is then started.

While the simulation is in progress, the text `[running]` is added to the window title of the scenario's view. A window reports the progress of simulation and gives an estimate of the remaining simulation time. To abort a simulation, click on the progress window. A dialog will ask you to confirm the abortion, and GREAT-ER will then report recognition of the break. Only one simulation is possible at a time for the same catchment, but different catchments can be simulated simultaneously. In other words, if a simulation is launched for a scenario after some seconds (due to precise timing of the system) it is possible to proceed with other catchments.

Once a simulation has been completed, `[running]` is removed from the window title and the results are shown: the mean values of the river C sim, internal distribution per stretch (see model documentation for detailed information) are displayed in the catchment view by colouring the river stretches. The colouring is based on the so-called ARCVIEW quantile classification method (same number of data in each class).

Next: Stop Simulation Up: Model Previous: Background Concentration