You can create as many scenarios as you need within a project to represent different combinations of land use alternatives and analysis assumptions. This article provides an overview of the scenario management features and steps you through how to create a new scenario.
You can access scenarios and their basic management features via the tabs that extend across the top of the user interface in Explore, Build, or Analyze modes.
When you create a project, a 'Base Scenario' is automatically created. The Base Scenario includes the Base Canvas only and represents existing conditions. New scenarios are created as copies of the Base Scenario, or other scenarios that have already been created. New scenarios contain the Base Canvas as a reference layer, and a 'Scenario Canvas' layer that corresponds to the selected scenario.
Scenario Management Options. Each scenario is accessed by a tab, from which you can access a menu of scenario management options. Options vary for the Base Scenario and other scenarios.
Create scenario (Base Scenario only). Creates a new scenario with the Base Canvas as the starting point for the Scenario Canvas.
Duplicate. Creates a new scenario as a copy of the selected scenario. Not applicable for the Base Scenario.
Edit Details. Allows you to edit the scenario name and description. Not applicable for the Base Scenario, for which the name is fixed.
Delete. Deletes the scenario. Not applicable for the Base Scenario, which cannot be deleted.
Create a new scenario. Located to the right of the scenario tabs, this opens a menu from which you can select the Base Scenario or another existing scenario as the basis for a new scenario.
Reordering scenarios. Scenario tabs can be reordered. To do so, click and drag the tabs.
Scenarios can be create anew from the Base Canvas, or as duplicates of existing scenarios. To create a scenario:
1. Click theicon to the right of the scenario tabs and select the Base Scenario or any existing scenario as the basis for your new scenario. Your new scenario will be created. A tab for your new scenario will appear when finished. A confirmation message will also appear at the bottom of your screen.
2. Alternatively, click to expand the menu for either the Base Scenario tab or the tab of the existing scenario you would like to copy. The menu options appear.
Create scenario (if creating a scenario from the Base Canvas) or
Duplicate (if creating a scenario as a copy). Your new scenario will be created. A tab for your new scenario will appear when finished. A confirmation message will also appear at the bottom of your screen.
Whether created as a clone of the Base Canvas or as a duplicate of an existing scenario, your new scenario will maintain all the data layers of the original scenario, with the exception of any analysis output layers. Analysis output layers are generated the first time you run a module for a scenario.
To rename or add a description to your new scenario, select
Edit details from the scenario tab menu. A window appears where you can edit the scenario name and add a description.
To delete a scenario, select Delete from the scenario tab menu. A confirmation dialog will appear. If you select delete, the scenario will be permanently deleted.