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{{learned|what an overlay is.|how overlays are implemented in the Tygron Engine.|which overlays exist.|how to use overlays.}}
[[File:Api_current_situation_calculation.png|thumb|right|400px|[[Overlay]] in comparison to [[Measurement]]s, [[Indicator]]s and [[Global]]s]]
==Overlays==
An overlay is a layer visualized on top of the [[terrain]] and [[building]]s in the 3D visualization. Overlays can provide spatial insight into specific subject, such as the variation of height and ownership. The visualized properties can originate from the current state of the project or from a result of a spatial calculation.  
An overlay is a layer drawn over a visualization to illustrate different properties. They do not contain all the information of a given visualization, but serve as a supplement to a base. By adding these properties onto the same view, the additional information can immediately be made understandable in the same way. A reason to split information off into other layers in this fashion can be to avoid overwhelming a user with too much information.


==How overlays are implemented in the Tygron Engine==
However, most overlays that can be added to a project use an underlying calculation model, which rasterize the spatial data and apply calculations to it to produce various (intermediate) results. These computational overlays can range from simple distance and average operations to complex water simulations. For these more complex Overlays with multiple results, additional [[Result Child Overlay]]s can be added. The calculation main and child results will always be governed by the main overlay, also called the [[Result Parent Overlay]].
Overlays are implemented in the Tygron Engine as part of the [[interface]]. Properties such as [[ownership]] and [[zoning]] are important pieces of information to the [[player]], but would be very overwhelming to display at all times. Instead, a player can activate on overlay to make these pieces of information visible. In principle, all spatially varied information is accessible as an overlay.


==Available overlay types==
{{clear}}
Multiple types of overlay exist in the Tygron Engine. All overlays which are available by default when creating a project are described below.
==How to access overlays in a project==
[[File:Overlays-Icons.png|thumb|left|Overlay buttons in the [[Navigation Panel]] can be clicked to show that specific [[Overlay]]. The [[Parent Overlay]]s are indicated with the yellow rectangles and the [[Child Overlay]]s with the red rectangle]]
Overlays available to stakeholders appear as buttons on the right side of the interface. Clicking on any of these buttons will switch the view to the specific overlay. Clicking on the "City" overlay will switch the view back to default. Some overlays are {{inlink|Default Overlays|automatically added}} when a project is created. Some overlays are closely related to indicators, such as [[Heat (Overlay)|Heatstress]] and [[Livability (Overlay)|Livability.]]


====City====
===Parent Overlay===
: ''The default view. This displays the [[project detail area]] in natural colors. Hovering over a location displays properties of the [[constructions|construction]] or [[land]] type in that location.''
Overlays can be grouped together using a Parent-Child hierarchy. Hovering over any of the Overlays in the [[Navigation Panel]] will show additional icons for the Child Overlays of that Overlay.


====Zoning====
Every Overlay is considered a Parent Overlay, unless it has a Parent Overlay set, in which case it becomes a Child Overlay of that Parent Overlay. Overlays with Child Overlays cannot be a Child Overlay to another Overlay. [[Result Child Overlay]]s are always Child Overlays of other Overlays.
: ''This overlay is available by default. This overlay displays the [[zoning|zoning plan]] for the entire project detail area. This is helpful when considering indicators which are scored per zone, and when looking to construct a building which is restricted to certain zones.


====Ownership====
When a parent overlay is removed, it's child overlays are not removed, unless the child overlay is a result child type overlay. Otherwise, they simply have no parent overlay set anymore and become a parent overlay themselves.
: ''This overlay is available by default. This overlay displays the [[ownership]] across the entire project detail area, using each stakeholder's colors. This is important when considering what stakeholder may construct a building where, or whom to negotiate with for [[land transactions]].
{{clear}}


==Optional overlay types==
==List of available Overlays==
====Traffic Flow====
{{Overlays|suppresscategory=true|allowselflinks=true|
{{Overlays|type=row|overlay=City                  |icon=normal              |category= Default        | otype=None                  | display=The default view without any overlay}}
{{Overlays|type=row|overlay=Ownership            |icon=ownership            |category= Administrative | otype=Feature              | display=Ownership of constructions/ plots}}
{{Overlays|type=row|overlay=Ownership Grid        |icon=ownership_grid      |category= Administrative | otype=[[Grid overlay|Grid]] | display=Ownership of constructions/ plots}}
{{Overlays|type=row|overlay=Municipalities        |icon=municipalities      |category= Administrative | otype=Feature              | display=Municipalities in the project area}}
{{Overlays|type=row|overlay=Neighborhoods        |icon=neighborhoods        |category= Administrative | otype=Feature              | display=Neighborhoods in the project area}}
{{Overlays|type=row|overlay=Vacancy              |icon=vacancy              |category= Administrative | otype=Feature              | display=Constructions marked as vacant are highlighted}}
{{Overlays|type=row|overlay=Zipcodes              |icon=zip_codes            |category= Administrative | otype=Feature              | display=Postal codes}}
{{Overlays|type=row|overlay=Zoning                |icon=zoning              |category= Administrative | otype=Feature              | display=Zoning (related to zoning plans)}}
{{Overlays|type=row|overlay= Aerius              |icon=aerius              |category= Environmental  | otype=[[Grid overlay|Grid]] | display=Impact of traffic<!--, industry and construction--> on NOX and NH3 polution on Natura 2000 areas in the Netherlands}}
{{Overlays|type=row|overlay= Heat                |icon=heat_stress          |category= Environmental  | otype=[[Grid overlay|Grid]] | display=Urban heat stress}}
{{Overlays|type=row|overlay= Livability          |icon=livability          |category= Environmental  | otype=[[Grid overlay|Grid]] | display=Livability score}}
{{Overlays|type=row|overlay= Traffic Density      |icon=traffic_density      |category= Environmental  | otype=[[Grid overlay|Grid]] | display=Traffic density}}
{{Overlays|type=row|overlay= Traffic Noise        |icon=traffic_noise        |category= Environmental  | otype=[[Grid overlay|Grid]] | display=Impact of traffic noise polution on surrounding area}}
{{Overlays|type=row|overlay= Traffic NO2          |icon=traffic_no2          |category= Environmental  | otype=[[Grid overlay|Grid]] | display=Impact of traffic NO2 polution on surrounding area}}
{{Overlays|type=row|overlay=Flooding              |icon=flooding            |category= Water          | otype=[[Grid overlay|Grid]] | display=Impact of flooding on inundation}}
{{Overlays|type=row|overlay=Groundwater          |icon=groundwater          |category= Water          | otype=[[Grid overlay|Grid]] | display=Underground water tables}}
{{Overlays|type=row|overlay=Rainfall              |icon=rainfall            |category= Water          | otype=[[Grid overlay|Grid]] | display=Impact of rainfall on inundation}}
{{Overlays|type=row|overlay=Subsidence            |icon=subsidence          |category= Water          | otype=[[Grid overlay|Grid]] | display=Areas subject to subsidence}}
{{Overlays|type=row|overlay=Watershed            |icon=watershed            |category= Water          | otype=[[Grid overlay|Grid]] | display=Discharge areas based on DTM or Water overlay's flow direction.}}
{{Overlays|type=row|overlay=Waterwijzer          |icon=waterwijzer          |category= Water          | otype=[[Grid overlay|Grid]] | display=Crop yield loss based on ground water levels and type of soil.}}
{{Overlays|type=row|overlay=Average              |icon=avg                  |category= Distance      | otype=[[Grid overlay|Grid]] | display=Smoothened values of grid cells}}
{{Overlays|type=row|overlay=Distance              |icon=distance            |category= Distance      | otype=[[Grid overlay|Grid]] | display=Defined contour around an object}}
{{Overlays|type=row|overlay=Sight Distance        |icon=sight_distance      |category= Distance      | otype=[[Grid overlay|Grid]] | display=Combined distance zone with line of sight}}
{{Overlays|type=row|overlay=Travel Distance      |icon=travel_distance      |category= Distance      | otype=[[Grid overlay|Grid]] | display=Contour based on travel distance}}
{{Overlays|type=row|overlay=Area                  |icon=area                |category= Custom        | otype=Feature              | display=Selection of [[Area]]s}}
{{Overlays|type=row|overlay=Attribute            |icon=attribute            |category= Custom        | otype=Feature              | display=Presence of a specific attribute in a data layer}}
{{Overlays|type=row|overlay=Combo                |icon=combo                |category= Custom        | otype=[[Grid overlay|Grid]] | display=Combines up to three grid overlays using mathematical functions and boolean operators.}}
{{Overlays|type=row|overlay=GeoTIFF              |icon=geo_tiff            |category= Custom        | otype=[[Grid overlay|Grid]] | display=External data in GeoTIFF format}}
{{Overlays|type=row|overlay=Image                |icon=image                |category= Custom        | otype=[[Grid overlay|Grid]] | display=A custom image}}
{{Overlays|type=row|overlay=WCS                  |icon=wcs                  |category= Custom        | otype=[[Grid overlay|Grid]] | display=Stores the GeoTIFF result of a Web Coverage Service as a Grid Overlay.}}
{{Overlays|type=row|overlay=WMS                  |icon=wms                  |category= Custom        | otype=[[Grid overlay|Grid]] | display=Stores the result of a Web Image Service as a Grid Overlay.}}
{{Overlays|type=row|overlay=Digital Surface Model |icon=heightmap            |category= Topography    | otype=[[Grid overlay|Grid]] | display=Height of the terrain and building heights (DSM)}}
{{Overlays|type=row|overlay=Digital Terrain Model |icon=heightmap            |category= Topography    | otype=[[Grid overlay|Grid]] | display=Height of the terrain (DTM)}}
{{Overlays|type=row|overlay=Function              |icon=function            |category= Topography    | otype=Feature              | display=Highlights specific [[functions]]/ [[building]]s}}
{{Overlays|type=row|overlay=Source                |icon=source              |category= Topography    | otype=Feature              | display=Datasets/sources currently in use for generating the project}}
{{Overlays|type=row|overlay=Underground          |icon=underground          |category= Topography    | otype=Feature              | display=Underground composition}}
{{Overlays|type=row|overlay=Network Distance      |icon=network_distance    |category= Networks      | otype=Feature              | display=Distance to lines of a network}}
{{Overlays|type=row|overlay=Network Overview      |icon=network_overview    |category= Networks      | otype=Feature              | display=Lines, loads and cluster topography of a network}}
{{Overlays|type=row|overlay=Network Ownership    |icon=network_ownership    |category= Networks      | otype=Feature              | display=Ownership of lines, loads and clusters of a network}}
}}


====Underground====
{{article end
====Safety Zone====
|howtos=
====Heat====
'''General:'''
====Quality of Life====
<div style="column-count:2">
: ''This overlay becomes available for each stakeholder with the [[Livability (Indicator)|livability indicator]]. It displays the average livability for each part of the project detail area, giving an indication of where the livability can best be increased.
* [[How to add and remove an Overlay]]
====Water Stress====
* [[How to add your own Overlay Icon]]
====Terrain Sewer====
* [[How to sort Overlays]]
====Terrain Flooding====
* [[How to edit an overlay legend]]
====Terrains====
* [[How to use the Overlay Overview]]
====Pipe network Financial====
</div>
====Pipe network Technical====
'''Grid Overlay specific:'''
====Function Highlight====
<div style="column-count:2">
====Custom Color Area's====
* [[How to configure a Grid Overlay's legend]]
====Vacancy====
* [[How to set an Overlay to active or inactive]]
====Image====
* [[How to delay Grid Overlay calculations]]
* [[How to force Grid Overlays to recalculate]]
* [[How to create an overlay for visualizing your own geographical vector information]]
* [[How to use a Grid Overlay to change the elevation model]]
* [[How to smooth Grid Overlay results]]
</div>
'''In/out:'''
<div style="column-count:2">
* [[How to export a Grid Overlay as ASCII]]
* [[How to export a Grid Overlay as GeoJSON]]
* [[How to export a Grid Overlay as GeoTIFF]]
* [[How to export a Grid Overlay as png]]
* [[How to show Overlays in Power BI]]
</div>
|notes=
* The following overlays are added automatically when creating a new project: [[City_Overlay|City]], [[Neighborhoods_(Overlay)|Neighborhoods]] and [[Ownership_(Overlay)|Ownership]]. Depending on the [[Project Source|project sources]], [[Zoning_(Overlay)|Zoning]] and [[Underground Overlay]] can also be added.
* [[Grid overlay]]s have the ability to show the [[Difference (Overlay)|difference]] between the maquette and the current state. The difference visualization uses its own legend, which can also be manually adjusted. The option to show the difference can be turned on or off per Grid Overlay.
* Overlays can be given [[Attribute]]s. Some of these Attributes are used by their calculation model.
* Some overlays can have the option to visualize different (intermediate) results of its calculation. These are configured using the [[Result_type|result types]]. For example, for the [[Water Overlay]] the [[Result_type_(Water_Overlay)|result types]] include the [[surface last value result type (Water Overlay)|surface last value result type]] and the [[ground watertable result type (Water Overlay)|groundwater result type]] for water above and below ground respectively.
* Some overlays store multiple [[Timeframes_(Water_Overlay)|timeframes]] of results. Examples are the [[Water Overlay]] and the [[Heat Overlay]]. Each timeframe is a complete snapshot of results of the entire project area. These results can be viewed in sequence. When these overlays are visualized in the [[Web_Interface|2D map]], the last timeframe is shown.
|seealso=
*[[Grid Overlay]]
}}
{{Overlay nav}}
{{Editor current situation nav}}


==How to use overlays==
[[Category:Items]]
To switch to a specific overlay, use the buttons just below the minimap. To switch back to the default view, switch to the "City" overlay.
 
==Adding and removing overlays==

Latest revision as of 15:33, 29 February 2024

Overlay in comparison to Measurements, Indicators and Globals

An overlay is a layer visualized on top of the terrain and buildings in the 3D visualization. Overlays can provide spatial insight into specific subject, such as the variation of height and ownership. The visualized properties can originate from the current state of the project or from a result of a spatial calculation.

However, most overlays that can be added to a project use an underlying calculation model, which rasterize the spatial data and apply calculations to it to produce various (intermediate) results. These computational overlays can range from simple distance and average operations to complex water simulations. For these more complex Overlays with multiple results, additional Result Child Overlays can be added. The calculation main and child results will always be governed by the main overlay, also called the Result Parent Overlay.

How to access overlays in a project

Overlay buttons in the Navigation Panel can be clicked to show that specific Overlay. The Parent Overlays are indicated with the yellow rectangles and the Child Overlays with the red rectangle

Overlays available to stakeholders appear as buttons on the right side of the interface. Clicking on any of these buttons will switch the view to the specific overlay. Clicking on the "City" overlay will switch the view back to default. Some overlays are automatically added when a project is created. Some overlays are closely related to indicators, such as Heatstress and Livability.

Parent Overlay

Overlays can be grouped together using a Parent-Child hierarchy. Hovering over any of the Overlays in the Navigation Panel will show additional icons for the Child Overlays of that Overlay.

Every Overlay is considered a Parent Overlay, unless it has a Parent Overlay set, in which case it becomes a Child Overlay of that Parent Overlay. Overlays with Child Overlays cannot be a Child Overlay to another Overlay. Result Child Overlays are always Child Overlays of other Overlays.

When a parent overlay is removed, it's child overlays are not removed, unless the child overlay is a result child type overlay. Otherwise, they simply have no parent overlay set anymore and become a parent overlay themselves.

List of available Overlays

Icon Name Category Type Displays
Overlay icon normal.png City Default None The default view without any overlay
Overlay icon ownership.png Ownership Administrative Feature Ownership of constructions/ plots
Overlay icon ownership grid.png Ownership Grid Administrative Grid Ownership of constructions/ plots
Overlay icon municipalities.png Municipalities Administrative Feature Municipalities in the project area
Overlay icon neighborhoods.png Neighborhoods Administrative Feature Neighborhoods in the project area
Overlay icon vacancy.png Vacancy Administrative Feature Constructions marked as vacant are highlighted
Overlay icon zip codes.png Zipcodes Administrative Feature Postal codes
Overlay icon zoning.png Zoning Administrative Feature Zoning (related to zoning plans)
Overlay icon aerius.png Aerius Environmental Grid Impact of traffic on NOX and NH3 polution on Natura 2000 areas in the Netherlands
Overlay icon heat stress.png Heat Environmental Grid Urban heat stress
Overlay icon livability.png Livability Environmental Grid Livability score
Overlay icon traffic density.png Traffic Density Environmental Grid Traffic density
Overlay icon traffic noise.png Traffic Noise Environmental Grid Impact of traffic noise polution on surrounding area
Overlay icon traffic no2.png Traffic NO2 Environmental Grid Impact of traffic NO2 polution on surrounding area
Overlay icon flooding.png Flooding Water Grid Impact of flooding on inundation
Overlay icon groundwater.png Groundwater Water Grid Underground water tables
Overlay icon rainfall.png Rainfall Water Grid Impact of rainfall on inundation
Overlay icon subsidence.png Subsidence Water Grid Areas subject to subsidence
Overlay icon watershed.png Watershed Water Grid Discharge areas based on DTM or Water overlay's flow direction.
Overlay icon waterwijzer.png Waterwijzer Water Grid Crop yield loss based on ground water levels and type of soil.
Overlay icon avg.png Average Distance Grid Smoothened values of grid cells
Overlay icon distance.png Distance Distance Grid Defined contour around an object
Overlay icon sight distance.png Sight Distance Distance Grid Combined distance zone with line of sight
Overlay icon travel distance.png Travel Distance Distance Grid Contour based on travel distance
Overlay icon area.png Area Custom Feature Selection of Areas
Overlay icon attribute.png Attribute Custom Feature Presence of a specific attribute in a data layer
Overlay icon combo.png Combo Custom Grid Combines up to three grid overlays using mathematical functions and boolean operators.
Overlay icon geo tiff.png GeoTIFF Custom Grid External data in GeoTIFF format
Overlay icon image.png Image Custom Grid A custom image
Overlay icon wcs.png WCS Custom Grid Stores the GeoTIFF result of a Web Coverage Service as a Grid Overlay.
Overlay icon wms.png WMS Custom Grid Stores the result of a Web Image Service as a Grid Overlay.
Overlay icon heightmap.png Digital Surface Model Topography Grid Height of the terrain and building heights (DSM)
Overlay icon heightmap.png Digital Terrain Model Topography Grid Height of the terrain (DTM)
Overlay icon function.png Function Topography Feature Highlights specific functions/ buildings
Overlay icon source.png Source Topography Feature Datasets/sources currently in use for generating the project
Overlay icon underground.png Underground Topography Feature Underground composition
Overlay icon network distance.png Network Distance Networks Feature Distance to lines of a network
Overlay icon network overview.png Network Overview Networks Feature Lines, loads and cluster topography of a network
Overlay icon network ownership.png Network Ownership Networks Feature Ownership of lines, loads and clusters of a network

Notes

  • The following overlays are added automatically when creating a new project: City, Neighborhoods and Ownership. Depending on the project sources, Zoning and Underground Overlay can also be added.
  • Grid overlays have the ability to show the difference between the maquette and the current state. The difference visualization uses its own legend, which can also be manually adjusted. The option to show the difference can be turned on or off per Grid Overlay.
  • Overlays can be given Attributes. Some of these Attributes are used by their calculation model.
  • Some overlays can have the option to visualize different (intermediate) results of its calculation. These are configured using the result types. For example, for the Water Overlay the result types include the surface last value result type and the groundwater result type for water above and below ground respectively.
  • Some overlays store multiple timeframes of results. Examples are the Water Overlay and the Heat Overlay. Each timeframe is a complete snapshot of results of the entire project area. These results can be viewed in sequence. When these overlays are visualized in the 2D map, the last timeframe is shown.

How-to's

General:

Grid Overlay specific:

In/out:

See also

Overlays
Categorization
Grid • Parent • Result Child • Result Parent • Result type
Default
City
Administrative
Ownership • Ownership Grid • Zipcodes • Zoning • Neighborhoods • Municipalities • Vacancy
Environmental
Heat Stress • Traffic Density • Traffic Noise • Traffic NO2 • Livability • Aerius
Water
Rainfall • Flooding • Groundwater • Subsidence • Watershed • Waterwijzer
Raster Calculation
Average • Combo • Distance • Sight Distance • Travel Distance
Geo Data
Area • Attribute • GeoTIFF • WCS • WMS • Image
Topography
Digital Surface Model • Digital Terrain Model • Underground • Function • Source
Network
Network Distance • Network Overview • Network Ownership


Editor ribbon icon current.pngCurrent Situation
Current Situation
Buildings • Terrains • Administrative • Areas • Networks • Overlays • Indicators • Panels • Globals •  Queries • Geo Import
Buildings
Function • Function Override • Traffic Units
Terrain
Height sector • Elevation model • Elevation GeoTIFF • Elevation Grid Overlay • Ground Price • Terrain Type • Terrain Type Override
Administrative
Neighborhood • Zone • Permission Popup • Plot • Zip Code
Geo Import
Source • GeoShare
Network
Net Cluster • Net Function • Net Line • Net Load • Net Node • Net Setting
Editor
Current Situation • Future Design • Multi Scenario • Tools • Community
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