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SpatCent Tutorial

Getting Started:

1. Registration and Login:
   • To access all features in the demo, please make sure that you have registered and logged in. Registration allows you to create, edit, and save your scenarios.

Understanding the Interface:

2. Initial View (Demo Scene):
   • Upon login, a default Scene loads automatically, presenting two maps known as Scenarios.
   • The left Scenario displays the original road network and cellular zones with preliminary road density-based model values.
   • The right Scenario shows the same network with modifications, such as added roads highlighted in brown and with increased thickness.
3. Display Adjustments:
   • Modify the road network visibility using the "Show Roads" checkbox and adjust zonal transparency with the opacity slider.

Running the Model:

4. Model Execution:
   • Start the model by clicking "Run Model." The computation begins, updating both Scenarios.
   • The left Scenario presents centrality values, while the right displays the centrality differences resulting from network edits.
   • The model runs for a set number of iterations, typically stabilizing after a few cycles. When no further visual changes occur, the model is considered stable.
   • Use "Pause" to halt and "Reset Model" to revert to initial model values.

Managing Scenarios:

5. Loading Scenes:
   • Use the drop-down menu to load different Scenes, which may be precomputed or previously saved by you.
6. Adding Scenarios:
   • Create a duplicate of the left Scenario for comparative analysis using the "Add Scenario" button.
7. Editing Scenarios:
   • Click "Edit Scenario" to modify the road network by adding roads.
   • All scenarios can be edited, using the polyline tool button in each map.
   • Confirm your edits with "Apply Changes" or cancel with "Cancel Changes."
   • Re-run the model to reflect the changes in centrality values.

Creating Custom Scenes:

8. New Scene Creation:
   • Click “Create New Scene” to define a new Scene by drawing a rectangle on the leftmost map, selecting a specific area.
   • In the dialog box choose the Network Type (Drive or Walk) and Zone Type (Cells, Buffers, or Streets) to fit your analysis needs.
   • Cells: This will create cellular zones with a minimum size according to the Cell Size selector.
   • Buffers: This will create zones using a buffer around relevant segments of the road network. The buffers are then cut according to a cellular pattern determined by “Cell Size”.
   • Streets: This option will use the street segments themselves as zones. Especially with a Walk-network this may result in many zones, which means that there is an additional limit on the area size when using this option.
   • Confirm the selections to generate the Scene. This will happen on the server and might take a few minutes.
   • Proceed with running the model or add Scenarios and make edits.

Model Saving and Parameters:

9. Saving a Scene:
   • Name your Scene and press the save button. The saved Scene includes additional Scenarios and any edits made.
10. Adjusting Model Parameters:
    • Tweak Urbanization, Localization, and Congestion parameters to influence centrality outcomes.
    • Note that parameter changes require re-running the model for visual updates.

Additional Features:

11. Customization Options:
    • Tailor the Colormap for each map for enhanced visualization
    • Adjust Line Width for zones which is particularly useful for Scenes using the Street Zone Type.

Closing Notes:

• For any further assistance, contact info@spatcent.se
• The current version is an early demo designed for research purposes. We appreciate your understanding if not everything works perfectly.