Average Overlay

The Average Overlay of the urbanization attribute.

The Average Overlay is a multi purpose Grid Overlay which displays (smoothed) values. These values can originate from 2D spatial objects, such as buildings, terrains, areas or neighborhoods. The values can also originate from an other Grid Overlay.

Another typical use-case of the Average Overlay is to visualize parameters of a simulation model (e.g. the rainfall overlay). A parameter assigned to a grid-cell can be related to one or more layers of the 3D model: Buildings, Addresses, Terrains, Areas, Neighborhoods and Net Lines.

Thirdly the Average overlay supports replacing NO_DATA values with interpolated non NO_DATA values using surrounding cells within a specified distance.

Additional information displayed in hover panel

The Average Overlay of the urbanization attribute and additional information in the hover panel.

When clicking on a specific location in the map of the Average Overlay, the hover panel gives additional information over the actual value in that specific grid cell.

Configurations

The Average Overlay can be configured to fine-tune the exact information which should be displayed.

Input

The Average Overlay requires an initial input, which it can then average out over a specified range. The input can be either an Attribute of vector data, or a Grid Overlay. The following options are available:

Attribute First Layer

Use the first value found among the layers of vector data which have the specified Attribute. If no such Attribute exists in a specific location, the used value is 0.

Attribute Min Layer / Max Layer

Use either the lowest or the highest value found among the layers of vector data which have the specified Attribute. If no such Attribute exists in a specific location, the used value is 0.

Attribute Specific Layer

Use the defined Attribute's value from the specific layer of vector data specified. Exactly one layer can be specified. If no such Attribute exists in a specific location, the used value is 0.

Grid Input Overlay

Use the value as calculated by another Grid Overlay. No Attribute needs to be specified. Instead, a specific Overlay is referenced. NO_DATA values of the referenced Overlay result in NO_DATA values in the grid.

Calculation

Based on the input, the Average Overlay can average out the found values across some radius. The means of calculation are defined by Attributes, and can most easily be set using the Average Overlay Wizard.

Attributes

The calculation can be configured via the following attributes:

 No data interpolation (Average Overlay)

Icon	Attribute	Unit	Range	Description	Default value
	ATTRIBUTE_TIMEFRAMES	integer		The amount of timeframes to display when basing input on Attribute arrays.	1
	DISTANCE_M	m	0 to 2000.0	The radius within which an average value must be computed.	100

Input Overlay

Input Overlays are spatial average overlays that supply additional insights in the data used for complex Overlay models (e.g the Water Overlay or Heat Stress Overlay). Input Overlays can be made visible in the 3D model by selecting them in the Wizard or adding them manually.

How-to's

• How to use the Average Overlay Wizard
• How to add and remove an Overlay
• How to edit an overlay legend

External links

• Extended Combo and average overlay functionalities.

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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

Water

Rainfall • Flooding • Groundwater • Subsidence • 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 • Underground • Source

Network

Network Distance • Network Overview • Network Ownership