Introduction

The purpose of scenario analysis is to compare two or more scenarios and see the difference. For example what is the impact of increased water demand in 2050 compared to today? The Scenario Comparison one or more scenario comparison templates can be stored for fast viewing. Models for which scenario simulations have been carried out, can be stored in these templates, and new simulations and scenarios are automatically included in the template.

Enable indicators

Instruction	Illustration
To enable calculating indicators: Right click on the Model node and select Enable indicators from the context menu
Two new nodes will appear below the model node. Note: In case these node are appearing it may be required to refresh the explorer view. The Indicator Definition node is used to create and define the indicator definitions, and the Indicator Values node (reference to a spread sheet) is presenting the results.

Specify indicator definitions

To specify Indicator Definition: Right click on the Indicator Definitions and click on Open. The Indicator Definition dialog appears in the Data View.

The Indicator Definition dialog consist of two parts:

Indicator Definition part which specific the available indicators by name and description;

and Indicator details part which refers to the script that calculates the indicator and the simulations from where the indicator is calculated.

Note: To create a new indicator requires that a script is available

Creating an indicator

To create a new Indicator: Click on New Indicator

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The Indicator details part become active for specifying information:

Specify Name of Indicator

Give a brief description (optional)

Specify a script

Note: As many indicators as needed cam be specified. For each indicator , indicator details needs to be specified

The script is specified by selecting the script from the Script explorer (by group view), and dragging it to the Script field in the Indicator Definition menu.

One the script has been placed in the placeholder the Parameter table will be populated with the parameters specified in the script.

Example: In the example above two parameters are specified in the script: BasecaseFlow and DevcaseFlow.

Specify Values type and Value of each parameter

Depending on the Parameter Type, which is defined in the script:

Example: The Indicator is calculated when a simulation is performed. In the above example, when executing the model the DevCaseFlow paramter (which is a time series of simluated flow) will be compared with a BasecaseFlow (which is also a time series) from a previous simulation performed by either another model or another scenario of the same model.

The Value Type can have different options:

Value Type: Value -> Value: a value

Value Type: Entity id -> Value: reference to a time series

Value Type: Entity descriptor -> Value: reference to a time series

Value Type: Model reference -> Value: Reference to a model output time series.

Specifying a time series reference in the Value fields can be done by selecting the time series in Time Series explorer and drag it into the field


Specifying a model output time can be done by selecting the time series in the model view and drag it into the field via the indicator tab in the Data View menu.

Viewing Indicator Results

When a simulation has been performed the calculated indicator can be viewed in the Indicator Values spread sheet:

Right click on Indicator Values and click on Open

The Indicator Values spread sheet will appear in the Data View and the computed indicator can be inspected.

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Note: The Name of the Indicator (FlowImpact) appears as a heading of a column and for each simulation there will be created a row specifying the computed Indicator value.