Rasterization - Revision history

Maxim@tygron.com: Maxim@tygron.com moved page Rasterization model to Rasterization over a redirect without leaving a redirect

2026-03-06T14:28:27Z

Maxim@tygron.com moved page Rasterization model to Rasterization over a redirect without leaving a redirect

← Older revision	Revision as of 14:28, 6 March 2026
(No difference)

Maxim@tygron.com at 13:12, 6 March 2026

2026-03-06T13:12:37Z

← Older revision		Revision as of 13:12, 6 March 2026
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	* '''Center''' Fastest but missing small polygons.		* '''Center''' Fastest but missing small polygons.

			Note: Since version 2025 combined is the default, before that outline was used.

	[[File:rasterization.jpg\|thumb\|none\|500px\|Select rasterization method in calculation panel]]		[[File:rasterization.jpg\|thumb\|none\|500px\|Select rasterization method in calculation panel]]


	~~Note: Since version 2025 combined is the default, before that outline was used.~~

Maxim@tygron.com at 13:12, 6 March 2026

2026-03-06T13:12:18Z

← Older revision		Revision as of 13:12, 6 March 2026
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	[[File:rasterization.jpg\|thumb\|none\|~~400px~~\|Select rasterization method in calculation panel]]		[[File:rasterization.jpg\|thumb\|none\|500px\|Select rasterization method in calculation panel]]


	Note: Since version 2025 combined is the default, before that outline was used.		Note: Since version 2025 combined is the default, before that outline was used.

Maxim@tygron.com: /* Methods */

2026-03-06T13:12:04Z

Methods

← Older revision		Revision as of 13:12, 6 March 2026
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	To compensate for this situation the default option is '''combined''' center + outline. Where most objects are rasterized via the optimal area solution (center point) and small objects are rasterized with the outline to prevent falling of the grid.		To compensate for this situation the default option is '''combined''' center + outline. Where most objects are rasterized via the optimal area solution (center point) and small objects are rasterized with the outline to prevent falling of the grid.


	Via the the editor [[Calculation panel]] the rasterization method can be selected.		Via the the editor [[Calculation panel]] the rasterization method can be selected.
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	* '''Center''' Fastest but missing small polygons.		* '''Center''' Fastest but missing small polygons.

	[[File:rasterization.jpg\|thumb\|none\|~~300px~~\|Select rasterization method in calculation panel]]
			[[File:rasterization.jpg\|thumb\|none\|400px\|Select rasterization method in calculation panel]]


	Note: Since version 2025 combined is the default, before that outline was used.		Note: Since version 2025 combined is the default, before that outline was used.

Maxim@tygron.com: /* Methods */

2026-03-06T13:11:34Z

Methods

← Older revision		Revision as of 13:11, 6 March 2026
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	To compensate for this situation the default option is '''combined''' center + outline. Where most objects are rasterized via the optimal area solution (center point) and small objects are rasterized with the outline to prevent falling of the grid.		To compensate for this situation the default option is '''combined''' center + outline. Where most objects are rasterized via the optimal area solution (center point) and small objects are rasterized with the outline to prevent falling of the grid.


	Via the the editor [[Calculation panel]] the rasterization method can be selected.		Via the the editor [[Calculation panel]] the rasterization method can be selected.
Line 29:		Line 30:
	* '''Center''' Fastest but missing small polygons.		* '''Center''' Fastest but missing small polygons.

			[[File:rasterization.jpg\|thumb\|none\|300px\|Select rasterization method in calculation panel]]

	Note: Since version 2025 combined is the default, before that outline was used.		Note: Since version 2025 combined is the default, before that outline was used.

Maxim@tygron.com: /* Layers */

2026-03-05T12:02:53Z

Layers

← Older revision		Revision as of 12:02, 5 March 2026
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	=Layers=		=Layers=
	The layer rasterization sequence of the features is:		The layer rasterization sequence of the polygon features is:
	# [[Net Line]]s		# [[Net Line]]s
	# [[Address]]es		# [[Address]]es

Maxim@tygron.com at 12:02, 5 March 2026

2026-03-05T12:02:34Z

← Older revision		Revision as of 12:02, 5 March 2026
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	The rasterization model is a part of the [[Simulation Core]], that is tasked with converting attributes from features~~, from~~ various layers~~, to~~ values ~~in rasters~~.		The rasterization model is a part of the [[Simulation Core]], that is tasked with converting attributes and polygons from features of various layers into raster values.

	=Layers=		=Layers=

Maxim@tygron.com at 12:01, 5 March 2026

2026-03-05T12:01:07Z

← Older revision		Revision as of 12:01, 5 March 2026
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	The rasterization model is a part of ~~Overlay models~~, that is tasked with converting attributes from features, from various layers, to values in rasters.		The rasterization model is a part of the [[Simulation Core]], that is tasked with converting attributes from features, from various layers, to values in rasters.

	=Layers=		=Layers=

Maxim@tygron.com: /* Methods */

2026-03-05T11:57:08Z

Methods

← Older revision		Revision as of 11:57, 5 March 2026
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	Converting polygons to grid cells can be done in different ways. A common approach is by checking the intersection between the polygon outline and the cell. As displayed below:		Converting polygons to grid cells can be done in different ways. A common approach is by checking the intersection between the polygon outline and the cell. As displayed below:

	[[File:Raster outline.jpg\|thumb\|none\|300px\|Outline ~~raster~~]]		[[File:Raster outline.jpg\|thumb\|none\|300px\|Outline rasterization method]]

	However this will create a small overshoot resulting in larger cell area then the original polygon. To correct for this one could also rasterize based on the center point. As displayed below:		However this will create a small overshoot resulting in larger cell area then the original polygon. To correct for this one could also rasterize based on the center point. As displayed below:

	[[File:Raster center.jpg\|thumb\|none\|300px]]		[[File:Raster center.jpg\|thumb\|none\|300px\|Center rasterization method]]

	Although this provides a fairly accurate area this can lead to unwanted results for very small objects that are smaller then the grid cell area. When the cells center point does not intersect the small object it will not be rasterized and thus be part of the simulation.		Although this provides a fairly accurate area this can lead to unwanted results for very small objects that are smaller then the grid cell area. When the cells center point does not intersect the small object it will not be rasterized and thus be part of the simulation.

Maxim@tygron.com: /* Methods */

2026-03-05T11:56:35Z

Methods

← Older revision		Revision as of 11:56, 5 March 2026
Line 13:		Line 13:
	Converting polygons to grid cells can be done in different ways. A common approach is by checking the intersection between the polygon outline and the cell. As displayed below:		Converting polygons to grid cells can be done in different ways. A common approach is by checking the intersection between the polygon outline and the cell. As displayed below:

	[[File:Raster outline.jpg\|thumb\|none\|300px]]		[[File:Raster outline.jpg\|thumb\|none\|300px\|Outline raster]]

	However this will create a small overshoot resulting in larger cell area then the original polygon. To correct for this one could also rasterize based on the center point. As displayed below:		However this will create a small overshoot resulting in larger cell area then the original polygon. To correct for this one could also rasterize based on the center point. As displayed below: