How to add Subsidence (Water Overlay): Difference between revisions

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It is possible to include the effects of subsidence in the [[Water Overlay]]'s calculations by using a [[Combo Overlay]] to precompute the resulting [[Elevation model]], and setting the result as the [[Terrain elevation prequel (Water Overlay)|terrain elevation prequel]] of the [[Water Overlay]].
Include subsidence effects in [[Water Overlay]] calculations by precomputing the [[Elevation model]] with a [[Combo Overlay]] and setting it as the [[Terrain elevation prequel (Water Overlay)|terrain elevation prequel]].


{{editor steps|title=add subsidence to a water simulation
{{editor steps|title=add subsidence to a water simulation
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| notes=
| notes=
* The source of Subsidence can be a [[Subsidence Overlay]], but could also be a precomputed result from a [[GeoTiff Overlay]] or another [[Combo Overlay]].
* The source of Subsidence can be a [[Subsidence Overlay]], but could also be a precomputed result from a [[GeoTiff Overlay]] or another [[Combo Overlay]].
* The [[terrain elevation prequel (Water Overlay)|terrain elevation prequel]] is solely for the terrain elevation and does not include [[Building]]s. Those are added automatically, on top of the terrain elevation, whether that terrain elevation is based on the [[DTM]] or on a [[Prequel]].
* The [[terrain elevation prequel (Water Overlay)|terrain elevation prequel]] excludes [[Building]]s; these are added automatically to the terrain elevation, regardless of whether it uses the [[DTM]] or a [[Prequel]].
* By setting up two identical [[Water Overlay]]s, one taking into account [[Subsidence Overlay|Subsidence]] and one not, it's possible to investigate in detail the effects of subsidence on the water system.
* Compare two identical [[Water Overlay]]s—one with [[Subsidence Overlay|Subsidence]] and one without—to analyze its effects on the water system.
| seealso=* [[Water Overlay]]
| seealso=* [[Water Overlay]]
* [[Subsidence Overlay]]
* [[Subsidence Overlay]]

Latest revision as of 11:32, 8 July 2026

Include subsidence effects in Water Overlay calculations by precomputing the Elevation model with a Combo Overlay and setting it as the terrain elevation prequel.

How to add subsidence to a water simulation:
  1. Add and configure a Subsidence Overlay (or other source which defines amounts of subsidence).
  2. Add a Heightmap Overlay, set to DTM mode.
  3. Add a Combo Overlay, which takes the values of the Heightmap Overlay and subtracts the value of the final result of the Subsidence Overlay.
  4. Open the Water Overlay's configuration wizard, and proceed to the step regarding the Elevation Model.
  5. Opt to select a Grid Overlay to determine the elevation model.
  6. Select the Combo Overlay.
  7. Recalculate the water Overlay.
  8. The calculation has now taken into account the specified subsidence effects.

Notes

See also

Overlays
Categorization
Grid • Overlay Type • Parent • Result Child • Result Parent • Result type • Key
Default
City
Administrative
Ownership • Ownership Grid • Zipcodes • Zoning • Neighborhoods • Municipalities • Scenario
Environmental
Heat Stress • Shadow • Traffic Density • Traffic Noise • Traffic NO2 • Livability
Water
Rainfall • Flooding • Groundwater • Watershed
Grid Calculation
Average • Combo • Distance • Sight Distance • Travel Distance • Inference • Iteration
Geo Data
GeoTIFF • WCS • WMS • Image • Area • Attribute • Function
Topography
Satellite • Digital Surface Model • Digital Terrain Model • Building Floors • Underground • Source
Network
Network Distance • Network Overview • Network Ownership
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