List of Combo Overlay examples - Revision history

Frank@tygron.nl: /* Minimum infiltration among layers */

2026-07-02T13:12:42Z

Minimum infiltration among layers

← Older revision		Revision as of 13:12, 2 July 2026
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	An example on how the combo overlay can obtain rasterized data from multiple data layers (MapLinks); Terrains, Buildings, Neighborhoods, Areas and Zones.		An example on how the combo overlay can obtain rasterized data from multiple data layers (MapLinks); Terrains, Buildings, Neighborhoods, Areas and Zones.
	*Set [[Rasterization (Combo Overlay)\|Combo Rasterization]] to "Attribute:Min value" (MIN)		*Set [[Rasterization (Combo Overlay)\|Combo Rasterization]] to "Attribute:Min value" (MIN)
	*Set [[Maplink (Combo Overlay)\|Combo Maplink]] to nothing (null or ' ')		*Set [[Maplink (Combo Overlay)\|Combo Maplink]] to nothing (''null'')
	*Set [[A (Combo Overlay)\|Key A]] to GROUND_INFILTRATION_MD		*Set [[A (Combo Overlay)\|Key A]] to GROUND_INFILTRATION_MD
	*Set Formula to: <syntaxhighlight copy>@A</syntaxhighlight>		*Set Formula to: <syntaxhighlight copy>@A</syntaxhighlight>

Frank@tygron.nl: /* Minimum infiltration among layers */

2026-07-02T13:12:29Z

Minimum infiltration among layers

← Older revision		Revision as of 13:12, 2 July 2026
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	An example on how the combo overlay can obtain rasterized data from multiple data layers (MapLinks); Terrains, Buildings, Neighborhoods, Areas and Zones.		An example on how the combo overlay can obtain rasterized data from multiple data layers (MapLinks); Terrains, Buildings, Neighborhoods, Areas and Zones.
	*Set [[Rasterization (Combo Overlay)\|Combo Rasterization]] to "Attribute:Min value" (MIN)		*Set [[Rasterization (Combo Overlay)\|Combo Rasterization]] to "Attribute:Min value" (MIN)
	*Set [[Maplink (Combo Overlay)\|Combo Maplink]] to nothing (null or '')		*Set [[Maplink (Combo Overlay)\|Combo Maplink]] to nothing (null or ' ')
	*Set [[A (Combo Overlay)\|Key A]] to GROUND_INFILTRATION_MD		*Set [[A (Combo Overlay)\|Key A]] to GROUND_INFILTRATION_MD
	*Set Formula to: <syntaxhighlight copy>@A</syntaxhighlight>		*Set Formula to: <syntaxhighlight copy>@A</syntaxhighlight>

Frank@tygron.nl: /* Minimum infiltration among layers */

2026-07-02T13:12:18Z

Minimum infiltration among layers

← Older revision		Revision as of 13:12, 2 July 2026
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	An example on how the combo overlay can obtain rasterized data from multiple data layers (MapLinks); Terrains, Buildings, Neighborhoods, Areas and Zones.		An example on how the combo overlay can obtain rasterized data from multiple data layers (MapLinks); Terrains, Buildings, Neighborhoods, Areas and Zones.
	*Set [[Rasterization (Combo Overlay)\|Combo Rasterization]] to "Attribute:Min value" (MIN)		*Set [[Rasterization (Combo Overlay)\|Combo Rasterization]] to "Attribute:Min value" (MIN)
	*Set [[Maplink (Combo Overlay)\|Combo Maplink]] to nothing (''null'')		*Set [[Maplink (Combo Overlay)\|Combo Maplink]] to nothing (null or '')
	*Set [[A (Combo Overlay)\|Key A]] to GROUND_INFILTRATION_MD		*Set [[A (Combo Overlay)\|Key A]] to GROUND_INFILTRATION_MD
	*Set Formula to: <syntaxhighlight copy>@A</syntaxhighlight>		*Set Formula to: <syntaxhighlight copy>@A</syntaxhighlight>

Frank@tygron.nl: /* Attribute */

2026-07-02T13:11:26Z

Attribute

← Older revision		Revision as of 13:11, 2 July 2026
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	==Attribute==		==Attribute==
			The Attributes used for obtaining values from an Items, such as Buildings, are configured for a [[Combo Overlay]] using [[Key]]s. Below are various examples using one or more [[Key]]s, applied to a specific layer or multiple layers.

	===Solid Buildings===		===Solid Buildings===
	The attribute [[Solid (Function Value)\|SOLID]] generally has a value of 0 or 1. It can therefore be used directly in a Combo Overlay Formula.		The attribute [[Solid (Function Value)\|SOLID]] generally has a value of 0 or 1. It can therefore be used directly in a Combo Overlay Formula.

Frank@tygron.nl at 13:09, 2 July 2026

2026-07-02T13:09:22Z

← Older revision		Revision as of 13:09, 2 July 2026
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			This page contains examples for using and setting up a Combo Overlay in various situations. The input of a Combo Overlay is often as important as the formula used.

	==Attribute==		==Attribute==
	===Solid Buildings===		===Solid Buildings===

Frank@tygron.nl: /* Residential Buildings */

2026-07-02T11:59:37Z

Residential Buildings

← Older revision		Revision as of 11:59, 2 July 2026
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	*Set [[D (Combo Overlay)\|Key D]] to STUDENT_UNIT_SIZE_M2		*Set [[D (Combo Overlay)\|Key D]] to STUDENT_UNIT_SIZE_M2
	*Set [[E (Combo Overlay)\|Key E]] to SENIOR_UNIT_SIZE_M2		*Set [[E (Combo Overlay)\|Key E]] to SENIOR_UNIT_SIZE_M2
	*Set Formula to: <syntaxhighlight copy>GT(@A,@B,@C,@D,@E)</syntaxhighlight>		*Set Formula to: <syntaxhighlight copy>OR(@A,@B,@C,@D,@E)</syntaxhighlight>

	===Categorized Residential Buildings===		===Categorized Residential Buildings===

Frank@tygron.nl: /* Residential Facades */

2026-07-01T15:34:40Z

Residential Facades

← Older revision		Revision as of 15:34, 1 July 2026
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	*Set [[B prequel (Combo Overlay)\|Grid B]] to a [[Heightmap Overlay]] set to the [[DSM\|DSM result type]]		*Set [[B prequel (Combo Overlay)\|Grid B]] to a [[Heightmap Overlay]] set to the [[DSM\|DSM result type]]
	*Set [[C prequel (Combo Overlay)\|Grid C]] to an [[Average Overlay]], with an [[Distance m (Average Overlay)\|Average distance]] of 3 meter and the [[DSM]] as		*Set [[C prequel (Combo Overlay)\|Grid C]] to an [[Average Overlay]], with an [[Distance m (Average Overlay)\|Average distance]] of 3 meter and the [[DSM]] as
	*Set [[D prequel (Combo ~~OVerlay~~)\|Grid D]] to an [[Average Overlay]], with an [[Distance m (Average Overlay)\|Average distance]] of 3 meter and a [[Input prequel (Average Overlay)\|Grid Input]] based on the [[#Residential Buildings\|Residential Combo Overlay]]		*Set [[D prequel (Combo Overlay)\|Grid D]] to an [[Average Overlay]], with an [[Distance m (Average Overlay)\|Average distance]] of 3 meter and a [[Input prequel (Average Overlay)\|Grid Input]] based on the [[#Residential Buildings\|Residential Combo Overlay]]
	*Set Formula to:<syntaxhighlight copy>AND(GT(SUB(C, A), 1), GT(SUB(C, B), 1), GT(D, 0))</syntaxhighlight>		*Set Formula to:<syntaxhighlight copy>AND(GT(SUB(C, A), 1), GT(SUB(C, B), 1), GT(D, 0))</syntaxhighlight>

Frank@tygron.nl: /* Relative Height Map */

2026-07-01T15:34:32Z

Relative Height Map

← Older revision		Revision as of 15:34, 1 July 2026
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	*Set Formula to:<syntaxhighlight copy>MAX(0,SUB(A, B))</syntaxhighlight>		*Set Formula to:<syntaxhighlight copy>MAX(0,SUB(A, B))</syntaxhighlight>

			===Residential Facades===
			An example on how to calculate facades with a Combo Overlay using variants of the Heightmap Overlay and Building attributes.
			*Set [[A prequel (Combo Overlay)\|Grid A]] to a [[Heightmap Overlay]] set to the [[DTM\|DTM result type]]
			*Set [[B prequel (Combo Overlay)\|Grid B]] to a [[Heightmap Overlay]] set to the [[DSM\|DSM result type]]
			*Set [[C prequel (Combo Overlay)\|Grid C]] to an [[Average Overlay]], with an [[Distance m (Average Overlay)\|Average distance]] of 3 meter and the [[DSM]] as
			*Set [[D prequel (Combo OVerlay)\|Grid D]] to an [[Average Overlay]], with an [[Distance m (Average Overlay)\|Average distance]] of 3 meter and a [[Input prequel (Average Overlay)\|Grid Input]] based on the [[#Residential Buildings\|Residential Combo Overlay]]
			*Set Formula to:<syntaxhighlight copy>AND(GT(SUB(C, A), 1), GT(SUB(C, B), 1), GT(D, 0))</syntaxhighlight>

	===Water Level Area Validation===		===Water Level Area Validation===

Frank@tygron.nl: /* Water Level Area Validation */

2026-07-01T13:52:00Z

Water Level Area Validation

← Older revision		Revision as of 13:52, 1 July 2026
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	===Water Level Area Validation===		===Water Level Area Validation===
	When initializing water levels for a [[Water Overlay]] using [[Water level area (Water Overlay)\|Water Level Area]]s, it might be useful to verify where the water level is within reasonable distance compared to the Digital Terrain Model.		When initializing water levels for a [[Water Overlay]] using [[Water level area (Water Overlay)\|Water Level Area]]s, it might be useful to verify where the water level is within reasonable distance compared to the Digital Terrain Model.
	In this example we use the attribute named WATER_LEVEL for the datum height of Water Levels. Secondly, the Water Level is only checked for Water Terrain and should be between 0 and 4 meters above the Digital Terrain Model.		In this example we use the attribute named WATER_LEVEL for the datum height of Water Levels. Secondly, the Water Level is only checked for Water Terrain and should be between 0 and 4 meters above the Digital Terrain Model. The threshold for whether rasterized terrain is water, is set to 0.5.
	Setup:		Setup:
	*Set [[Rasterization (Combo Overlay)\|Combo Rasterization]] to "Attribute:First"		*Set [[Rasterization (Combo Overlay)\|Combo Rasterization]] to "Attribute:First"

Frank@tygron.nl: /* Water Level Area Validation */

2026-07-01T13:50:54Z

Water Level Area Validation

← Older revision		Revision as of 13:50, 1 July 2026
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	*Set [[A prequel (Combo Overlay)\|Grid A]] to the [[Heightmap Overlay]]		*Set [[A prequel (Combo Overlay)\|Grid A]] to the [[Heightmap Overlay]]
	*Set Formula to:		*Set Formula to:
	<syntaxhighlight copy>IF(LT(SUB(@A,A),0),~~-1, IF(~~GT(SUB(@A,A),4) 0, 1)</syntaxhighlight>		<syntaxhighlight copy>IF(GT(@B, 0.5), AND(LT(SUB(@A, A), 4), GT(SUB(@A, A), 0)), NO_DATA)</syntaxhighlight>

	==Rasterization==		==Rasterization==