Average Overlay: Difference between revisions

Latest revision as of 13:46, 15 March 2024

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 an other Grid Overlay.

A parameter assigned to a grid-cell can be related to one or more types of features in the project area: 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.

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 determine for example the range of the operation, the default value in case none was rasterized and the amount of timeframes that should be created when rasterizing an attribute with potentially more than one value.

Averaged Input Type

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

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.
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 will have timeframes equal to the amount of timeframes 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.

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 cells 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 NODATA cells using its surrounding cells.

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 Type. If the Average Type is set to Grid, no vector data is rasterized for this overlay. When the MapLink is set to null, and the Average 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.

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 a Average Overlay	FIRST
	Maplink	The attribute maplink (layer) used to select an Attribute 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:

Attribute	Unit	Range	Description	Default value
ATTRIBUTE_TIMEFRAMES	integer		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

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:

External links

Extended Combo and average overlay functionalities.

Group: Model Attributes
Attributes

Attribute timeframes • Default value • Distance m
Keys

Attribute
Models

Attribute • Grid
Prequels

Input
Properties

Maplink • Rasterization
Result types

Avg • Min • Max • Avg interpolated

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

@@ Line 1: / Line 1: @@
-{{being updated}}
+[[File:Average_overlay_example.JPG|thumb|250px|left|The Average Overlay of the urbanization attribute.]]
-{{learned|what the Average overlay is|which additional information is displayed in the hover panel|how to add or remove the Average overlay}}
+The Average Overlay is a multi purpose [[Grid overlay|Grid Overlay]] which displays (smoothed) values. These values can originate from spatial features, such as [[building]]s, [[terrain]]s, [[area]]s and [[neighborhood]]s. Alternatively, the values can originate from an other [[Grid Overlay]].
-==What the Average overlay is==
-The Average overlay shows (smoothed) values of a grid cell. With the Average overlay it is possible to create a custom dynamic [[Grid_Overlay|Grid overlay]].
-==Purpose of the Average Overlay==
+A parameter assigned to a grid-cell can be related to one or more types of features in the [[project area]]: [[Building]]s, [[Address]]es, [[Terrain]]s, [[Area]]s, [[Neighborhood]]s and [[Net Line]]s.
-A typical use-case of the Average Overlay is to visualize parameters of a simulation model (e.g. the [[Rainfall _(Overlay)|rainfall overlay]]). A parameter assigned to a grid-cell can be related to one or more layers of the 3D model: [[Constructions|Buildings]], [[Terrains]], [[Areas]] and [[Neighborhoods]].
+Thirdly the Average overlay supports replacing {{nodata}} values with interpolated non {{nodata}} values using surrounding cells within a specified distance.
+{{clear}}
 ==Additional information displayed in hover panel==
-[[File:Additional_info.jpg|thumb|250px|left|The average overlay of the urbanization attribute and additional information in the hover panel.]]
+[[File:Average_hover_panel.JPG|thumb|250px|left|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.
+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.
-<br clear=all>
+{{clear}}
+==Calculation==
+The Average Overlay works by first rasterizing input values. These values can be obtained from Vector data or a [[Grid Overlay]].
-==Create an Average Overlay==
+Once [[#Rasterized Vector data|rasterized]], the configured result type determines the operation applied on these values.
-{{Editor ribbon|header=Geo Data|bar=Overlays}}
+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.
-{{Editor steps|title=add the Average overlay|Select in the editor 'Geo Data' from the ribbon|Select 'Overlays' from the ribbon bar|Select the 'Add AVG' overlay|Follow the steps in the configuration wizard (Average Overlay Wizard) in the panel on the right to set create the Average overlay}}
+===Averaged Input Type===
+You can also configure in what way a value for this overlay will be [[Rasterization (Average Overlay)|rasterized]]:
+* '''First''': Selects the first value encountered among all considered Vector data types. See [[Average Overlay#Rasterized Vector data|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.
+* '''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.
+{{Overlay prequels|suppresscategory=true|
+{{:Input prequel (Average Overlay)}}
+}}
-===Average Overlay Wizard===
+===Average Result Type===
-Below an explanation of the steps in the Average Overlay Wizard.
+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:
-====Selection type====
+{{result types|suppresscategory=true|allowselflinks=true|
-If you wish to create a spatial smooting, choose Create an average Grid Overlay, if you wish to Gain insight into Grid Cell Values, choose the latter option.
+{{:Avg result type (Average Overlay)}}
+{{:Min result type (Average Overlay)}}
+{{:Max result type (Average Overlay)}}
+{{:Avg interpolated result type (Average Overlay)}}
+}}
-====Select attribute value====
+===Rasterized Vector data===
-Select the attribute from the list of all the attributes your project contains, you want to create an overlay from.
+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 Type|Average Type]]. If the Average Type is set to Grid, no vector data is rasterized for this overlay. When the MapLink is set to null, and the Average 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.
-====Select Layer====
+The Average Overlay currently supports the following MapLinks (in order): [[Net Line]]s, [[Address]]es, [[Building]]s, [[Terrain]]s, [[Area]]s, [[Neighborhood]]s.
-Attributes can be assigned to one of more layers in the 3D model: [[Constructions|Buildings]], [[Terrains]], [[Areas]] and [[Neighborhoods]]. In this step you can select the following options for choosing which attribute values you would like to see:
+{{Overlay property|suppresscategory=true|
-*Filter occurrence in Layers: an attribute value is selected from order of occurrence in the model data layers mentioned above
+{{:Rasterization (Average Overlay)}}
-*Minimum values in Layers. The minimum value is selected from all layers above
+{{:Maplink (Average Overlay)}}
-*Maximum values in Layers. The maximum value is selected from all layers above
+}}
-*Specific Layer only. A specific layer can be selected.
-====Optional step: select distance====
+===Calculation===
-This step is optional and shows only when selected the create grid overlay option in step 1. in this step a smoothing distance value can be chosen.
+The way of averaging is defined by several [[Attribute]]s, and can most easily be set using the ''Average Overlay Wizard''.
+The calculation can be configured via the following attributes:
+{{overlay attributes|suppresscategory=true|allowselflinks=true|
+  {{:Attribute timeframes (Average Overlay)}}
+  {{:Default value (Average Overlay)}}
+  {{:Distance m (Average Overlay)}}
+}}
-{{Editor steps|title=remove the Average overlay|Select in the editor 'Geo Data' from the ribbon|Select 'Overlays' from the ribbon bar|Select the desired overlay from the list of active overlays on the left panel|Select 'remove' from the bottom of the left panel|Confirm the removal in the pop up confirmation message}}
+{{article end
+|notes=
+[[File:wateroverlay_wizard_input_overlay_step.jpg|thumb|right|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 Overlay]]s to your project by selecting them in the ''Input Overlay'' step of a Wizard.
+|seealso=
+*[[Model attributes (Average Overlay)]]
+*[[Attribute model (Average Overlay)]]
+*[[Grid model (Average Overlay)]]
+|howtos=
+* [[How to add and remove an Overlay]]
+* [[How to edit an overlay legend]]
+Average Overlay Variants:
+* [[How to create an Average Overlay based on another Grid Overlay]].
+* [[How to fill NO_DATA values in a grid overlay by interpolation using and Average Overlay]].
+* [[How to create an Average Overlay based on feature attributes]].
+* [[How to configure an Average Overlay to gain insight into grid cell values]].
+* [[How to smooth Grid Overlay results]]
+|external=
+* [https://www.tygron.com/en/idea/extended-combo-and-average-overlay-functionalities  Extended Combo and average overlay functionalities.]
+}}
+{{AverageOverlay nav}}
+{{Overlay nav}}

Average Overlay: Difference between revisions

Latest revision as of 13:46, 15 March 2024

Contents

Additional information displayed in hover panel