Overlay

What are overlays

An overlay is a layer drawn over the 3D world to illustrate different properties. They do not contain all the information of a given visualization, but serve as a supplement. 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 do overlays relate to the Tygron Platform interface

Overlays are implemented in the Tygron Platform as part of the interface. Properties such as ownership and zoning are important pieces of information to the user, but would be very overwhelming to display at all times. Instead, a user can activate on overlay to make these pieces of information visible. In principle, all spatially varied information is accessible as an overlay.

How to access overlays in a project

File:Overlays-Icons.jpg

How to access overlays

Overlays available to stakeholders appear as buttons on the right side of the interface. To switch to a specific overlay, use the button to switch to the designated overlay. To switch back to the default view, switch to the "City" overlay. Some overlays are default available when a project is created, see default overlay types. Some overlays are very closely related to indicators, such as Heatstress and Livability.

Default overlays

The following overlays are available by default when creating a new project:

• City
• Neighborhoods
• Ownership
• Zoning

Special overlays

City

Default City overlay

The default view. This Overlay displays the project detail area in natural colors. Hovering over a location displays properties of the construction or terrain type in that location.

Difference

Example of the Difference Overlay for Heatstress

Main article: Difference (Overlay).

This overlay shows the difference of Grid Overlays between maquette state and the original state.

Environmental overlays

The following dynamic overlays are Grid Overlays and show effects on the environment.

Heat stress

Example of the Heat stress overlay

Main article: Heat (Overlay).

This overlay displays the Heat Stress. The overlay displays the average temperature deviation (positive or negative) for the project area, giving an indication of where the most heat-stress is occurring.

Livability

Optional Livability overlay, linked to Livability indicator

Main article: Livability (Overlay).

This overlay displays the average livability for each part of the project detail area, giving an indication whether the livability is good, average or bad. This overlay becomes available for each stakeholder with an interest in the livability indicator. In other words, the overlay is only visible when the livability indicator is also active for the selected stakeholder.

Traffic Flow

File:Traffic Flow-Overlay.jpg

Optional Traffic Flow overlay

Main article: Traffic Flow (Overlay).

This overlay displays the flow of traffic through roads. It becomes available for all stakeholders when added to a project.

Traffic NO2 (Air polution effect)

Optional Traffic NO2 (Air polution effect) overlay

Main article: Traffic NO2 (Overlay).

This overlay displays the impact of traffic air polution (nitrogen dioxide) on the surrounding area. It becomes available for all stakeholders when added to a project.

Traffic Noise

Optional Traffic Noise overlay

Main article: Traffic Noise (Overlay).

This overlay displays the impact noise polution of traffic has on the surrounding area. It becomes available for all stakeholders when added to a project.

Buildings overlays

Vacancy

Optional Vacancy overlay

Main article: Vacancy (Overlay).

This overlay shows all constructions in the project area which have been set as vacant in the Editor.

Neighborhoods

Example of the Neighborhoods overlay

Main article: Neighborhoods (Overlay).

This overlay is available by default and shows the division in neighborhoods and statistics concerning those areas.

Ownership

Example of the Ownership overlay

Main article: Ownership (Overlay).

This overlay is available by default. This overlay displays the ownership of properties across the entire project area, using each stakeholder's colors. This is important when considering which stakeholder may perform actions such as constructing or demolishing at a given location, or whom to negotiate with for land transactions.

Zip codes

Example of the Zipcodes overlay

This overlay displays the division into 6-digits zipcode areas. This overlay is an Image overlay.

Zoning

Default Zoning overlay

This overlay is available by default. The overlay displays the 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.

Landscape overlays

Heightmap

Example of a Heightmap Overlay

Main article: Heightmap (Overlay).

This overlay displays the height of the terrain. The overlay becomes available for all stakeholders when added to a project.

Underground

Example of an Underground overlay

Main article: Underground (Overlay).

This overlay displays the underground terrain composition. The overlay becomes available for all stakeholders when added to a project.

Water overlays

Terrain Flooding

Optional Terrain Flooding overlay

Main article: Terrain Flooding (Overlay).

This overlay displays active flooding areas. This overlay becomes available for each stakeholder.

Rainfall

Rainfall overlay, also known as the inundation module

Main article: Rainfall (Overlay).

This overlay calculates the flow of water across the 3D world both above ground and underground, to provide insight into inundation intensities and durations. This is an expert hydrology module. It becomes available for all stakeholders when added to a project.

Subsidence

The subsidence overlay

Main article: Subsidence (Overlay).

This overlay calculates the subsidence of peat in the project area. The subsidence can be caused by oxidation and compaction of the soil. This overlay is part of the Subsidence calculation collection of overlays.

Custom overlays

Areas

File:Terrains-Overlay.jpg

Areas overlay

Main article: Areas (Overlay).

The Areas overlay displays a combination of selected active areas. This overlay becomes available for each stakeholder.

Attribute

Attribute overlay

Main article: Attribute (Overlay).

The Attribute overlay highlights geographical data which has a specific attribute. This overlay becomes available for each stakeholder.

Average

The Average Overlay of the Urbanization attribute

Main article: Average (Overlay).

The Average Overlay displays an attribute value from a building, terrain, area or neighborhood assigned to a grid cell. This overlay becomes available for each stakeholder.

Custom Color Areas

File:Custom Color Areas-Overlay.jpg

Optional Custom Color Areas overlay

Main article: Custom Color Area (Overlay).

This overlay shows colored areas in the 3D world, in locations defined in the editor.

Function Highlight

File:Function Highlight-Overlay.jpg

Optional Function Highlight overlay

Main article: Function Highlight (Overlay).

This overlay highlights all constructions in the 3D world, for which the specific function has been selected, such as all shops in an area.

Image

File:Image-Overlay.jpg

Optional Image overlay

Main article: Image (Overlay).

This overlay can be used to visualize a geographically referenced Image.

Source

Example of the source overlay

Main article: Source (Overlay).

The Source overlay displays the datasets/sources that are used for and in the project. This overlay becomes available for each stakeholder.

Distance overlays

Distance Sight

File:Sight Distance overlay.jpg

Optional Distance Sight overlay

Main article: Distance Sight (Overlay).

This overlay combines the Distance Zone as defined by constructions with the direct line of sight for these constructions. The overlay becomes available for all stakeholders when added to a project.

Distance Zone

Optional Distance Zone overlay

Main article: Distance Zone (Overlay).

This overlay displays the Distance Zone as defined by constructions. The overlay becomes available for all stakeholders when added to a project.

Adding and removing overlays

Adding and removing overlays is a generic process, however, certain overlays are dependent on other assets being present too, such as indicators, terrains, vacancy, images, etc. For more information please refer to the respective main articles for the specific overlays.

How to add an overlay:

1. Select in the editor '3D World' from the ribbon
2. Select 'Overlays' > 'Edit overlays' from the ribbon bar
3. Select the desired overlay'*' from the drop down menu on the bottom of the left panel
4. Select 'Add' from the bottom of the left panel
5. Fill in parameters on the right panel, as required for some overlays
6. The overlay icon will now appear under the mini map'**'

• 

  1. Select 3D World

• SelectEditOverlay.jpg

  2. Select Overlays > Edit overlays

• SelectDropDown.jpg

  3. Select desired overlay from drop down menu on the bottom of the left panel

• 

  4. Select 'Add' from the bottom of the left panel

• OverlayParameters.jpg

  5. Fill in parameters on the right panel (required for some overlays)

• OverlayIconPresent.jpg

  6. The overlay icon will now appear under the mini map

How to remove an overlay:

1. Select in the editor '3D World' from the ribbon
2. Select 'Overlays' > 'Edit overlays' from the ribbon bar
3. Select the desired overlay'*' from the list of active overlays'**' on the left panel
4. Select 'remove' from the bottom of the left panel
5. Confirm the removal in the pop up confirmation message

• 

  1. Select 3D World

• SelectEditOverlay.jpg

  2. Select Overlays > Edit overlays

• SelectOverlay.jpg

  3. Select desired overlay from the list of active overlays on the left panel

• 

  4. Select 'Remove' from the bottom of the left panel

• 

  5. Confirm the removal in the pop up confirmation message

Sometimes it can be convenient to duplicate an already existing overlay. To do so, follow the steps for removal, but select 'Duplicate' in stead of 'Remove'.

'*' The default City, Zoning and Property overlays are already present when creating a new project in the editor. However, they can be removed and added again later.