Comparing with Other Model Engine or Scenario

The impact of different engine and scenario could be evaluated in Difference View (Figure 8-1). R² is used as the indicator for difference.

To check the difference for a variable, first select the variable by choosing the type of SWAT component (HRU, Subbasin, Reach and Reservoir) and then select the variable from the Variable List. The interface will extract time series data from two outputs and then calculate R² for all SWAT components. The results are shown in the graph and table. In graph, the x-axis is the ID of SWAT components and y-axis is R². In the table, the SWAT components with most difference (smallest R²) could be found by double-clicking on column R².

Figure 8-1. Difference View