Model attributes (Sight Distance Overlay)

The Sight Distance Overlay's model calculations depend on a number of keys, properties and attributes.

Keys

Icon	Key	Unit	Range	Description	Default value
	DISTANCE_ZONE_M	m	0 to 2000.0	Attribute 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

Properties

Icon	Property	Description	Default value
	Rasterization	The rasterization method of a Sight Distance Overlay	First
	Maplink	The attribute maplink (layer) used to select an Attribute when rasterizing a Sight Distance Overlay	None (null)

Prequels

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

Attributes

Icon	Attribute	Unit	Range	Description	Default value
	DISTANCE_ZONE_M	m		The maximum distance from an Item a line-of-sight is allowed to extend.	0
	ATTRIBUTE_TIMEFRAMES	integer	1 to 1000	Amount of timeframes requested for the selected attribute..	1
	OBSERVER_HEIGHT_M	m	-3.4028235E38 to 3.4028235E38	The height to which the line-of-sight is calculated.	0
	SOURCE_HEIGHT_M	m	-3.4028235E38 to 3.4028235E38	The height from which the line-of-sight is calculated.	0.75

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Sight Distance Overlay

Group

Model Attributes

Attributes

Attribute • Attribute timeframes • Observer height m • Source height m

Keys

Distance zone m

Models

Attribute • Grid

Prequels

Input

Properties

Maplink • Rasterization

Result types

Sight