Scenario input sets allow you to easily keep model structure, while switching between groups of input data and parameters. These may be used to represent changeable physical attributes, such as climate, land use decisions or even proposed infrastructure characteristics. You can switch between different scenario input sets to compare the effects on a model. For example, you can have one scenario input set consisting of rainfall, inflow and evapotranspiration data for natural conditions, another for wet conditions and a third set for dry conditions.
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- Add Scenario Input Set – create new parent scenario input set;
- Add Child Scenario Input Set – Set – create a new child scenario input set., the selected input set will be the parent;
- Rename – change the name of a scenario input set; and
- Delete – remove a scenario input set.
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Figure 2. Scenario input sets, parameter entry
Child Scenario Input Sets
Child scenario input sets allow you to further refine model scenarios. A child scenario input set inherits all parameters and data sources specified in its parent. You can then set additional parameters, or alter existing ones. When you run a model with a child scenario input set, for any parameters that differ between the parent and child, the parameters from the child will take precedence.
Figure 3. Child Scenario Input Sets, Example
For parent and child scenario input sets:
- You can create 'grandchildren', thus creating nested scenario input sets. Every child scenario input set inherits all parameters above it in its branch, and ignores any parameters set in its children.
- Deleting a parent will delete all of its children.
- Within both the Configure dialog (Figure 1) and Results Manager (LINK to naming), child scenario input sets are referred to be their full path, eg. Dry Weather.Water Restriction Level 1.New Dam.
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Data sources can only be assigned to the root-level parents (Dry Weather, Wet Weather and Default Input Set in Figure 3). This is indicated by the |
Adding Scenario Input Sets
First, open the Scenario Input Sets dialog, via Edit » Scenario Input Sets...
A new root-level scenario input set:
- Right-click on the scenario's name and select Add Scenario Input Set from the contextual menu (Figure 2). This will open the New Scenario Input Set dialog (Figure 4).
- Select the scenario input set from which to copy the data source usages, either one of the existing root-level scenario input sets or <Empty>, which will not copy usages from anywhere.
To add a new child scenario input set.
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Input parameter entry
Parameters specific to a scenario input set are defined and managed using the parameter set editor in the Scenario Input Sets dialog (as shown in Figure 12). The panel on the right allows you to specify parameters, either manually, or by loading a text file.
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Figure 3. Input parameter set using a file
Child Scenario Input Sets
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Figure 4. Child Scenario Input Sets, Example
For parent and child scenario input sets:
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