As outlined in Fundamental Concepts, projects act as 'wrappers' for A Source model consists of two parts - a project and one or more scenarios. A project is a wrapper for a collection of one or more scenarios. It identifies the project name, description, and any scenarios associated with the project. You can only have one project file open at a time and you should not open the same project file using more than one copy of Source. This page outlines how to work with them
A scenario is the representation of a node-link network in Source. The relationship between a project and a scenario is shown in Figure 5.
Figure 5. Projects and scenarios
A scenario describes the major processes in a river system or catchment that are modelled. This includes catchment and sub-catchment definition, rainfall runoff and constituent generation models, data sets and parameters. You can create multiple scenarios to:
- Break complex projects into distinct parts; or
- Duplicate existing scenarios to conduct what-if experiments without disrupting the original.
Any change to the definition of sub-catchments, node-link network, FUs, or the models within FUs, forms a new scenario. Similarly, a different set of inputs or parameters can be used to set up a new scenario, such as a change in land use or a climate change.
Projects
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Note: You must upgrade a project if it was created in Source v3.1.0 or earlier. If you open these projects in later versions of Source, an error message (shown in Figure 4) will appear prompting you to save in v3.1.0. Follow the steps outlined in the dialog to automatically upgrade the project to the current version of Source. Figure 4. Opening a project, error |
Copying a scenario
You can duplicate existing scenarios as a whole, provided they are part of the same project. You may want to do this if you wish to experiment with variations without affecting your original scenario.
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