Scenarios

Besides analyzing existing real-world data & situations, GOAT allows you to create custom scenarios such as network changes or new infrastructure projects. Ways, points and polygons can be added, edited or removed and their impact on accessibility analyzed.

1. Explanation

With the scenario feature you can edit your layers and compute indicators based on the changes you made. The biggest advantage of this tool is that you keep your original layer intact: none of your original data gets deleted, so do not need to re-upload a modified layer in order to compute the different analyses. In addition to your layers, you can change the Street Network - Edges. This layer is a base layer available in all projects representing the road network and can be modified as a line layer in the scenarios.

INFO

You can only modify geographical layers: Tables and rasters cannot be modified in scenarios. Learn more about the data types here

2. How to edit a scenario?

1

Click on Scenarios .

2

Click on Create scenario and name your scenario. The scenario is added to the scenario list.

3

Click on the three dots next to the scenario name, select Edit to edit the layers in a scenario.

4

In Select layer, choose a layer to edit. In Edit tool, you can draw , modify , or delete features

Draw

5

Depending on the layer type, you can draw different geographical shapes:

Point

Click on the desired location on the map.

Fill in the attributes of your new features when required. Click on save to update your data. The new features are in blue.

Line

Click on the map to start drawing a new line. Continue clicking to shape the line, and double-click to finish.

Fill in the attributes of your new features when required. Click on save to update your data. The new features are in blue.

Polygon

Click on the map to start drawing a new polygon. Continue clicking to define each corner, and click on the starting point to complete the shape.

Fill in the attributes of your new features when required. Click on save to update your data. The new features are in blue.

Modify

5

Select an initial feature or one you've created. You can edit any available attributes. Click Save to apply the updates. Edited features from the initial dataset are highlighted in yellow.

Delete

5

Click on the feature you want to delete, then click the Delete button in the box that appears. Deleted features are highlighted in red.

6

Now, you can do analysis on your updated layer. Click on Toolbox and select an indicator.

7

Select a layer associated with a scenario to perform your analysis on. At the bottom of the Indicator menu, under Scenario, select the associated scenario.

3. Scenarios management

You can create multiple scenarios to test different configurations. To manage your scenarios, you can:

• Select a scenario: Click on a scenario from the scenarios list to display its specific edits or added features.
• Modify a scenario Click on the three dots next to a scenario name to rename or delete the scenario, or to edit the layers.
• Edit a layer: Layer associated with a scenario is marked by and a number, showing the modifications made.
• Deselect a scenario: Click on the selected scenario again and return to the default map view or choose another scenario.

4. Street Network - Edges

The “Street Network –Edges" is a base layer available in all projects representing the real-world street network. You can only visualize the layer when selecting it in the scenario editing and zooming in the map. With Scenarios, you can modify the lines of this base layer representing streets.

Scenarios applied on the Street Network layer only apply to the Catchment Area area indicator. Changing the street network does not impact the computation of other indicators.