Elevation model (Water Overlay) - Revision history

Frank@tygron.nl: /* Actions */

2026-05-11T09:56:30Z

Actions

← Older revision		Revision as of 09:56, 11 May 2026
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	** Increase the value configured of the [[Design flood elevation m (Water Overlay)\|design flood elevation model attribute]] for the [[Water Overlay]].		** Increase the value configured of the [[Design flood elevation m (Water Overlay)\|design flood elevation model attribute]] for the [[Water Overlay]].
	** Add a [[Digital Surface Model Overlay]] and configure it for the [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]] of the [[Water Overlay]].		** Add a [[Digital Surface Model Overlay]] and configure it for the [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]] of the [[Water Overlay]].
			* The way in which Bridges are taken into account can be configured using the [[Bridge elevation (Water Overlay)\|Bridge elevation model attribute]].
	\|seealso=		\|seealso=
	* [[Terrain elevation prequel (Water Overlay)]]		* [[Terrain elevation prequel (Water Overlay)]]

Frank@tygron.nl at 09:55, 11 May 2026

2026-05-11T09:55:17Z

← Older revision		Revision as of 09:55, 11 May 2026
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	* [[Levee]]		* [[Levee]]
	* [[Bridge elevation (Water Overlay)]]		* [[Bridge elevation (Water Overlay)]]
			* [[Design flood elevation m (Water Overlay)]]
	\|references=		\|references=
	<references>		<references>

Frank@tygron.nl: /* Actions */

2026-05-11T09:54:33Z

Actions

← Older revision		Revision as of 09:54, 11 May 2026
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	* [[Breach (Water Overlay)]]		* [[Breach (Water Overlay)]]
	* [[Levee]]		* [[Levee]]
			* [[Bridge elevation (Water Overlay)]]
	\|references=		\|references=
	<references>		<references>

Frank@tygron.nl: /* Rasterization of height points of height sectors and buildings */

2026-05-05T11:36:31Z

Rasterization of height points of height sectors and buildings

← Older revision		Revision as of 11:36, 5 May 2026
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	Often the height source has more height values for a particular grid cell. The calculate height value for that grid cell is then calculated as the average of these points.		Often the height source has more height values for a particular grid cell. The calculate height value for that grid cell is then calculated as the average of these points.

	Added to the rasterized land height are the [[building]] ~~heights~~. A building's height is calculated based on the [[Floor height m (Function Value)\|floor height]] times the amount of floors and optional [[Height offset (Function Value)\|height offset]]. In case a building has a [[Custom Geometry]], the height is calculated based on this custom geometry, within the boundaries of the grid cell, with the addition of the optional height offset. The calculated height of a building (including bridges!) is limited by the value configured for the [[Design flood elevation m (Water Overlay)\|design flood elevation model attribute]].		Added to the rasterized land height are the height of [[Solid (Water Overlay)\|solid]] [[building]]s. A building's height is calculated based on the [[Floor height m (Function Value)\|floor height]] times the amount of floors and optional [[Height offset (Function Value)\|height offset]]. In case a building has a [[Custom Geometry]], the height is calculated based on this custom geometry, within the boundaries of the grid cell, with the addition of the optional height offset. The calculated height of a building (including bridges!) is limited by the value configured for the [[Design flood elevation m (Water Overlay)\|design flood elevation model attribute]].

	How bridges are handled as buildings depend on the configured [[Bridge elevation (Water Overlay)\|bridge mode]].		How bridges are handled as buildings depend on the configured [[Bridge elevation (Water Overlay)\|bridge mode]].

Frank@tygron.nl at 11:27, 5 May 2026

2026-05-05T11:27:32Z

← Older revision		Revision as of 11:27, 5 May 2026
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	File:Inundation overlay 04 HWP(1).PNG\|left\|thumb\|400px\|Application of reconstructed elevation Source: Horváth et al. (2014){{ref\|Horvath}}		File:Inundation overlay 04 HWP(1).PNG\|left\|thumb\|400px\|Application of reconstructed elevation Source: Horváth et al. (2014){{ref\|Horvath}}
	</gallery>		</gallery>

			===Actions===
			The following actions influence the rasterized Height Sectors or Buildings, leading to changes in the calculated Elevation model:
			* Planned [[Building]]s and Upgrades
			* Planned [[Levee]]s
			* Planned [[Measure]]s

	{{article end		{{article end

Frank@tygron.nl at 11:25, 5 May 2026

2026-05-05T11:25:49Z

← Older revision		Revision as of 11:25, 5 May 2026
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	* Piecewise linear reconstruction of the bottom		* Piecewise linear reconstruction of the bottom

	==Rasterization of height points of height sectors and buildings==		===Rasterization of height points of height sectors and buildings===
	The base land height values can originate from two sources:		The base land height values can originate from two sources:
	* The [[height sector]]s		* The [[height sector]]s

Frank@tygron.nl: /* Rasterization of height points of height sectors and buildings */

2026-05-05T11:25:42Z

Rasterization of height points of height sectors and buildings

← Older revision		Revision as of 11:25, 5 May 2026
Line 3:		Line 3:
	* Piecewise linear reconstruction of the bottom		* Piecewise linear reconstruction of the bottom

	===Rasterization of height points of height sectors and buildings===		==Rasterization of height points of height sectors and buildings==
	The base land height values can originate from two sources:		The base land height values can originate from two sources:
	* The height ~~sectors and additional actions (levees~~		* The [[height sector]]s
	* A [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]]		* A [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]]

Frank@tygron.nl at 11:22, 5 May 2026

2026-05-05T11:22:54Z

← Older revision		Revision as of 11:22, 5 May 2026
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	** Add a [[Digital Surface Model Overlay]] and configure it for the [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]] of the [[Water Overlay]].		** Add a [[Digital Surface Model Overlay]] and configure it for the [[Terrain elevation prequel (Water Overlay)\|Terrain elevation prequel]] of the [[Water Overlay]].
	\|seealso=		\|seealso=
	* [[Elevation (Water Overlay)]]
	* [[Terrain elevation prequel (Water Overlay)]]		* [[Terrain elevation prequel (Water Overlay)]]
	* [[~~Design flood elevation m~~ (Water Overlay)]]		* [[Elevation model]]
			* [[Subsidence (Water Overlay)]]
			* [[Surface model (Water Overlay)]]
			* [[Breach (Water Overlay)]]
			* [[Levee]]
	\|references=		\|references=
	<references>		<references>

Frank@tygron.nl at 11:20, 5 May 2026

2026-05-05T11:20:22Z

← Older revision		Revision as of 11:20, 5 May 2026
Line 10:		Line 10:
	Often the height source has more height values for a particular grid cell. The calculate height value for that grid cell is then calculated as the average of these points.		Often the height source has more height values for a particular grid cell. The calculate height value for that grid cell is then calculated as the average of these points.

	Added to the rasterized land height are the [[building]] heights. A building's height is calculated based on the [[Floor height m (Function Value)\|floor height]] times the amount of floors~~, [[Slanting roof height (Function Value)\|slanting roof height]]~~ and optional [[Height offset (Function Value)\|height offset]]. In case a building has a [[Custom Geometry]], the height is calculated based on this custom geometry, within the boundaries of the grid cell, with the addition of the optional height offset. The calculated height of a building (including bridges!) is limited by the value configured for the [[Design flood elevation m (Water Overlay)\|design flood elevation model attribute]].		Added to the rasterized land height are the [[building]] heights. A building's height is calculated based on the [[Floor height m (Function Value)\|floor height]] times the amount of floors and optional [[Height offset (Function Value)\|height offset]]. In case a building has a [[Custom Geometry]], the height is calculated based on this custom geometry, within the boundaries of the grid cell, with the addition of the optional height offset. The calculated height of a building (including bridges!) is limited by the value configured for the [[Design flood elevation m (Water Overlay)\|design flood elevation model attribute]].

	How bridges are handled as buildings depend on the configured [[Bridge elevation (Water Overlay)\|bridge mode]].		How bridges are handled as buildings depend on the configured [[Bridge elevation (Water Overlay)\|bridge mode]].

Frank@tygron.nl at 11:19, 5 May 2026

2026-05-05T11:19:32Z

← Older revision		Revision as of 11:19, 5 May 2026
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	{{article end		{{article end
			\|howtos=
			* [[How to import a GeoTIFF to change the elevation model]]
			* [[How to use a Grid Overlay to change the elevation model]]
			* [[How to import a GeoTIFF of waterway depths]]
			* [[How to import a GeoJSON to change the elevation model]]
	\|notes=		\|notes=
	* An [[terrain elevation prequel (Water Overlay)\|alternative elevation model]] can be provided as a [[prequel]].		* An [[terrain elevation prequel (Water Overlay)\|alternative elevation model]] can be provided as a [[prequel]].