Catchment or geographic scenarios in Source are generated and managed using three distinct components, in the following order:
Figure 1 outlines the steps required to generate and run a catchments scenario.
Assigning functional units, rainfall runoff models and constituents to subcatchments is done using a table in the corresponding dialog. To aid assignment, there is a subcatchment filter in each table. To access the filter:
You can choose which subcatchment to filter on using one of two filter types (as shown in Figure 2).
Select Filter by name, then enter all or part of the subcatchment name and click Filter. Toggle on Match whole words to search for whole words only. For example, if you search for "#2" when Match whole words is toggled off, subcatchments named SC #2, SC #20, SC #201, etc. will be found. If you toggle on Match whole words, only SC #2 will be found.
Select Filter by selection, then click Geo regions... to open the subcatchment map in a separate dialog (example shown in Figure 3). In the map, click on the subcatchment to select it (highlighted with a black boundary). For multiple subcatchment selection, you can click and drag to draw a rectangle over the region with your mouse, you can also press Ctrl to keep the current selection while you select another, disparate region either by clicking or by clicking and dragging. Once you have selected subcatchments, click Filter to close the subcatchment map and apply the filter or click Clear to clear all subcatchment selections.
Right clicking on the map opens the contextual menu, where you can:
You can assign catchment models to a catchments scenario ONLY if a catchment model plugin has been installed. It allows you to assign models to entire catchment or individual sub-catchments and it generally applies to catchments that model, for example, groundwater (for the GWLag Plugin). Choose Edit » Catchments » Assign Models to open the dialog.
Source uses projections to convert projected layers from the geographic view to latitude and longitudinal coordinates for the map view. Choose Scenario Options » Projection to edit projection information for a catchments scenario (Figure 3).
Note: The map view is not available in Source (public version).