Average Overlay: Difference between revisions

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Once [[#Rasterized Vector data|rasterized]], the configured result type determines the operation applied on these values.
Once [[#Rasterized Vector data|rasterized]], the configured result type determines the operation applied on these values.


Additional parameters determine for example the [[Distance m (Average Overlay)|range of the operation]], the [[Default value (Average Overlay)|default value]] in case none was rasterized and the [[Attribute timeframes (Average Overlay)|amount of timeframes]] that should be created when rasterizing an attribute with potentially more than one value.
Additional parameters define the [[Distance m (Average Overlay)|operation range]], the [[Default value (Average Overlay)|default value]] if none is rasterized, and the [[Attribute timeframes (Average Overlay)|number of timeframes]] for attributes with multiple values.


===Averaged Input Type===
===Averaged Input Type===
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====Grid====
====Grid====
Use the values of another [[Grid Overlay]] when specified as input, instead of an [[Attribute]]. {{nodata}} values of the referenced Overlay result in {{nodata}} values in the grid. The Average Overlay will have [[timeframe]]s equal to the amount of [[timeframe]]s of the Input Overlay. In case the input Grid Overlay does not have the same grid size as the Average Overlay, the input Grid Overlay 's value grid is automatically resized.
Use the values of another [[Grid Overlay]] when specified as input, instead of an [[Attribute]]. {{nodata}} values of the referenced Overlay result in {{nodata}} values in the grid. The Average Overlay inherits the number of [[timeframe]]s from the Input Overlay. If their grid sizes differ, the input grid is automatically resized.
{{Overlay prequels|
{{Overlay prequels|
{{:Input prequel (Average Overlay)}}
{{:Input prequel (Average Overlay)}}
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===Average Result Type===
===Average Result Type===
The configured [[Result type (Average Overlay)|Average Overlay result type]] determines how a cells value is calculated. The following result types are supported for the Average Overlay:
The configured [[Result type (Average Overlay)|Average Overlay result type]] determines how a cell's value is calculated. The following result types are supported for the Average Overlay:


{{result types|
{{result types|
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===Rasterized Vector data===
===Rasterized Vector data===
The Vector data that is rasterized is determined by two values: the configured layer [[MapLink (Average Overlay)]] of the Average overlay and the configured [[Average Overlay#Average Input Type|Average Input Type]]. If the Average Input Type is set to Grid, no vector data is rasterized for this overlay. When the MapLink is set to null, and the Average Input Type is set to anything other than Grid, all MapLink layers are considered. When the MapLink layer is set to a specific MapLink, only that type of data is rasterized.
Rasterized vector data depends on the [[Maplink (Average Overlay)]] and [[Average Overlay#Average Input Type|Average Input Type]]. If the input type is 'Grid', no vector data is used. Otherwise, all MapLink layers are considered if MapLink is null; otherwise, only the specified MapLink is rasterized.


The Average Overlay currently supports the following MapLinks (in order): [[Net Line]]s, [[Address]]es, [[Building]]s, [[Terrain]]s, [[Area]]s, [[Neighborhood]]s.
The Average Overlay currently supports the following MapLinks (in order): [[Net Line]]s, [[Address]]es, [[Building]]s, [[Terrain]]s, [[Area]]s, [[Neighborhood]]s.
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* [[Api session event editor overlay set result type]]
* [[Api session event editor overlay set result type]]
* [[Api session event editor overlay set attribute]]
* [[Api session event editor overlay set attribute]]
* [[Api session event editor overlay set avg distance]]
* [[Api session event editor overlay set prequel]]
}}
}}
{{AverageOverlay nav}}
{{AverageOverlay nav}}
{{Overlay nav}}
{{Overlay nav}}

Latest revision as of 07:38, 10 July 2026

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 spatial features, such as buildings, terrains, areas and neighborhoods. Alternatively, the values can originate from another Grid Overlay.

Spatial Features

A parameter assigned to a grid-cell can be related to one or more types of features in the project map: Buildings, Addresses, Terrains, Areas, Neighborhoods and Net Lines. The way this value is selected depends on the Averaged Input Type and calculation parameters.

Interpolate NODATA

The Average overlay can also be configured to replace 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 about the actual value in that specific grid cell.

Calculation

The Average Overlay works by first rasterizing input values. These values can be obtained from Vector data or a Grid Overlay.

Once rasterized, the configured result type determines the operation applied on these values.

Additional parameters define the operation range, the default value if none is rasterized, and the number of timeframes for attributes with multiple values.

Averaged Input Type

You can also configure in what way a value for this overlay will be rasterized.

Key

  • First: Selects the first value encountered among all considered Vector data types. See Rasterized Vector data for the order.
  • Min: Selects the minimum value among all considered Vector data types.
  • Max: Selects the maximum value among all considered Vector data types.
  • Single layer: Only Vector data of the configured Maplink (Average Overlay) is rasterized.
Icon Key Unit Range Description Default value
KEY m -3.4028235E38 to 3.4028235E38 Key used to retrieve a value from one or more Layers for a specific grid cell. Grid cell value will be averaged over the selected distance. 0

Grid

Use the values of another Grid Overlay when specified as input, instead of an Attribute. NO_DATA values of the referenced Overlay result in NO_DATA values in the grid. The Average Overlay inherits the number of timeframes from the Input Overlay. If their grid sizes differ, the input grid is automatically resized.

Name Prequel Underlying data Unit Range No data Description
INPUT INPUT Average Prequel - infinity to infinity The Grid Overlay that provides the Average Overlay with its initial values.


Average Result Type

The configured Average Overlay result type determines how a cell's value is calculated. The following result types are supported for the Average Overlay:

Icon Result type Unit Mode Description
AVG A cell's value is the average of itself and its surrounding cells.
MIN A cell's value is the minimum of itself and its surrounding cells.
MAX A cell's value is the maximum of itself and its surrounding cells.
AVG_INTERPOLATED Replace NO_DATA cells using their surrounding cells.

Rasterized Vector data

Rasterized vector data depends on the Maplink (Average Overlay) and Average Input Type. If the input type is 'Grid', no vector data is used. Otherwise, all MapLink layers are considered if MapLink is null; otherwise, only the specified MapLink is rasterized.

The Average Overlay currently supports the following MapLinks (in order): Net Lines, Addresses, Buildings, Terrains, Areas, Neighborhoods.

Icon Property Description Default value
Rasterization The rasterization method of an Average Overlay FIRST
Maplink The attribute maplink (layer) used to select an Key when rasterizing a Average Overlay None (null)

Calculation

The way of averaging is defined by several Attributes, and can most easily be set using the Average Overlay Wizard.

The calculation can be configured via the following attributes:

Icon Attribute Unit Range Description Default value
ATTRIBUTE_TIMEFRAMES integer 1 to 1000 The amount of timeframes to display when basing input on Attribute arrays. 1
DEFAULT_VALUE The default value used for a cell when no spatial data overlaps that cell. 0
DISTANCE_M m 0 to 2000.0 The radius within which an average value must be computed. 100
SURFACE_ONLY boolean 0 to 1 Whether the configured attribute should only be sampled from the Surface layer. 1

Notes

Input overlay step in the Water Overlay wizard.
  • Input Overlays are overlays that can provide insight in the data used for complex Overlay models (e.g the Water Overlay). These input Overlays can be added automatically as Average Overlays to your project by selecting them in the Input Overlay step of a Wizard.

How-to's

Average Overlay Variants:

See also

API Endpoints

Average Overlay
Group
Attributes
Attribute timeframes • Default value • Distance m • Surface only
Keys
Key
Models
Attribute • Grid
Prequels
Input
Properties
Maplink • Rasterization
Result types
Avg • Min • Max • Avg interpolated


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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