Combo Overlay tutorial - Revision history

Maxim@tygron.com at 09:05, 9 July 2026

2026-07-09T09:05:48Z

← Older revision		Revision as of 09:05, 9 July 2026
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	The [[Combo Overlay]] will, by itself, not show any significantly relevant results. This is because no inputs have yet been set, nor has a relevant formula been entered.		The [[Combo Overlay]] will, by itself, not show any significantly relevant results. This is because no inputs have yet been set, nor has a relevant formula been entered.

	[[File:combo-overlay-tutorial-combo-1-small.jpg\|350px\|frame\|center\|The default results of the [[Combo Overlay]] are uniform before inputs and irrelevant.]]		[[File:combo-overlay-tutorial-combo-1-small.jpg\|350px\|frame\|center\|The default results of the [[Combo Overlay]] are uniform before inputs and are irrelevant.]]

	The [[Combo Overlay]] accepts a set of inputs, which are [[Grid Overlay]]s.		The [[Combo Overlay]] accepts a set of inputs, which are [[Grid Overlay]]s.

Maxim@tygron.com at 09:05, 9 July 2026

2026-07-09T09:05:03Z

← Older revision		Revision as of 09:05, 9 July 2026
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	The [[Combo Overlay]] will, by itself, not show any significantly relevant results. This is because no inputs have yet been set, nor has a relevant formula been entered.		The [[Combo Overlay]] will, by itself, not show any significantly relevant results. This is because no inputs have yet been set, nor has a relevant formula been entered.

	[[File:combo-overlay-tutorial-combo-1-small.jpg\|350px\|frame\|center\|The default results of the [[Combo Overlay]] are uniform before inputs and ~~formulas are configured~~.]]		[[File:combo-overlay-tutorial-combo-1-small.jpg\|350px\|frame\|center\|The default results of the [[Combo Overlay]] are uniform before inputs and irrelevant.]]

	The [[Combo Overlay]] accepts a set of inputs, which are [[Grid Overlay]]s.		The [[Combo Overlay]] accepts a set of inputs, which are [[Grid Overlay]]s.

Maxim@tygron.com at 07:59, 9 July 2026

2026-07-09T07:59:06Z

Rudolf@tygron.nl at 06:18, 5 May 2026

2026-05-05T06:18:27Z

← Older revision		Revision as of 06:18, 5 May 2026
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	\|tutorial=This tutorial relies on base knowledge about the editor interface and the creation of Overlays.		\|tutorial=This tutorial relies on base knowledge about the editor interface and the creation of Overlays.
	\|project=This tutorial can be followed with any project of any arbitrary location, preferably with both roads and traintracks.		\|project=This tutorial can be followed with any project of any arbitrary location, preferably with both roads and traintracks.
			\|time=45 minutes
	\|additional=		\|additional=
	\|Start your project. This can be a pre-existing project, or a newly created project.		\|Start your project. This can be a pre-existing project, or a newly created project.

Frank@tygron.nl at 13:41, 5 March 2026

2026-03-05T13:41:57Z

← Older revision		Revision as of 13:41, 5 March 2026
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	Then, click on ""Update now" to recalculate the [[Overlay]]s.		Then, click on ""Update now" to recalculate the [[Overlay]]s.

	The result is that for each [[~~Grid Cell~~]], the value of the input Overlay A, which is set to the [[Traffic Noise Overlay]], is used directly as the result.		The result is that for each [[grid cell]], the value of the input Overlay A, which is set to the [[Traffic Noise Overlay]], is used directly as the result.

	Notice that the [[legend]] of the [[Traffic Noise Overlay]] is directly applied as well. ~~this~~ is because the legend of the first input is automatically read out by the [[Combo Overlay]] as the default legend for the [[Combo Overlay]] itself.		Notice that the legend of the [[Traffic Noise Overlay]] is directly applied as well. This is because the legend of the first input is automatically read out by the [[Combo Overlay]] as the default legend for the [[Combo Overlay]] itself.

	[[File:combo-overlay-tutorial-combo-2-small.jpg\|350px\|frame\|center\|The results of the [[Combo Overlay]] directly outputting the results of the [[Traffic Noise Overlay]].]]		[[File:combo-overlay-tutorial-combo-2-small.jpg\|350px\|frame\|center\|The results of the [[Combo Overlay]] directly outputting the results of the [[Traffic Noise Overlay]].]]

Frank@tygron.nl: /* Creating a simple masking calculation */

2025-10-10T14:29:47Z

Creating a simple masking calculation

← Older revision		Revision as of 14:29, 10 October 2025
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	{{editor location\|Overlays\|dropdown=Custom\|3=Combo}}		{{editor location\|Overlays\|dropdown=Custom\|3=Combo}}

	[[File:~~combo-overlay-tutorial-combo-add-small~~.~~jpg~~\|350px\|frame\|center\|Adding the [[Combo Overlay]] from the ribbon.]]		[[File:ComboOverlay_addNew.png\|350px\|frame\|center\|Adding the [[Combo Overlay]] from the ribbon.]]

	{{page break}}		{{page break}}
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	{{page break}}		{{page break}}

	==Rasterizing and combining data==		==Rasterizing and combining data==
	[[Combo Overlay]]s are, in and of themselves, effective tools for manipulating data. However, their effectiveness only goes as far as the input which can be provided to them. Therefor, it is also important to know how to turn other data in the {{software}} into [[Grid Overlay]]s as well.		[[Combo Overlay]]s are, in and of themselves, effective tools for manipulating data. However, their effectiveness only goes as far as the input which can be provided to them. Therefor, it is also important to know how to turn other data in the {{software}} into [[Grid Overlay]]s as well.

Frank@tygron.nl: Undo revision 63197 by Frank@tygron.nl (talk)

2025-10-10T14:29:32Z

Undo revision 63197 by Frank@tygron.nl (talk)

← Older revision		Revision as of 14:29, 10 October 2025
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	{{editor location\|Overlays\|dropdown=Environmental\|3=Traffic Noise}}		{{editor location\|Overlays\|dropdown=Environmental\|3=Traffic Noise}}

	[[File:~~ComboOverlay_addNew~~.~~png~~\|350px\|frame\|center\|Adding the [[Traffic Noise Overlay]] from the ribbon.]]		[[File:combo-overlay-tutorial-traffic-noise-add-small.jpg\|350px\|frame\|center\|Adding the [[Traffic Noise Overlay]] from the ribbon.]]

	{{page break}}		{{page break}}
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	{{page break}}		{{page break}}

	==Rasterizing and combining data==		==Rasterizing and combining data==
	[[Combo Overlay]]s are, in and of themselves, effective tools for manipulating data. However, their effectiveness only goes as far as the input which can be provided to them. Therefor, it is also important to know how to turn other data in the {{software}} into [[Grid Overlay]]s as well.		[[Combo Overlay]]s are, in and of themselves, effective tools for manipulating data. However, their effectiveness only goes as far as the input which can be provided to them. Therefor, it is also important to know how to turn other data in the {{software}} into [[Grid Overlay]]s as well.

Frank@tygron.nl: /* Creating a simple masking calculation */

2025-10-10T14:28:17Z

Creating a simple masking calculation

← Older revision		Revision as of 14:28, 10 October 2025
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	{{editor location\|Overlays\|dropdown=Environmental\|3=Traffic Noise}}		{{editor location\|Overlays\|dropdown=Environmental\|3=Traffic Noise}}

	[[File:~~combo-overlay-tutorial-traffic-noise-add-small~~.~~jpg~~\|350px\|frame\|center\|Adding the [[Traffic Noise Overlay]] from the ribbon.]]		[[File:ComboOverlay_addNew.png\|350px\|frame\|center\|Adding the [[Traffic Noise Overlay]] from the ribbon.]]

	{{page break}}		{{page break}}
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	{{page break}}		{{page break}}

	==Rasterizing and combining data==		==Rasterizing and combining data==
	[[Combo Overlay]]s are, in and of themselves, effective tools for manipulating data. However, their effectiveness only goes as far as the input which can be provided to them. Therefor, it is also important to know how to turn other data in the {{software}} into [[Grid Overlay]]s as well.		[[Combo Overlay]]s are, in and of themselves, effective tools for manipulating data. However, their effectiveness only goes as far as the input which can be provided to them. Therefor, it is also important to know how to turn other data in the {{software}} into [[Grid Overlay]]s as well.

Rudolf@tygron.nl: /* Introduction to the Combo Overlay */

2023-10-18T07:21:22Z

Introduction to the Combo Overlay

← Older revision		Revision as of 07:21, 18 October 2023
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	==Introduction to the Combo Overlay==		==Introduction to the Combo Overlay==
	The [[Combo Overlay]] is a [[Grid Overlay]] which allows for the creation of custom spatial calculation models. It is comparable to raster calculators which can be found in other GIS packages such as ~~QGIs~~. The principle on which it operates is that for each [[grid cell]], other [[Grid Overlay]]s may provide values, and the [[combo Overlay]] uniformly applies a (simple or complex) formula to compute a new resulting value for that [[grid cell]], and does so for all [[grid cell]]s.		The [[Combo Overlay]] is a [[Grid Overlay]] which allows for the creation of custom spatial calculation models. It is comparable to raster calculators which can be found in other GIS packages such as [[QGIS]]. The principle on which it operates is that for each [[grid cell]], other [[Grid Overlay]]s may provide values, and the [[combo Overlay]] uniformly applies a (simple or complex) formula to compute a new resulting value for that [[grid cell]], and does so for all [[grid cell]]s.

	{{page break}}		{{page break}}

	==Creating a simple masking calculation==		==Creating a simple masking calculation==
	To get started with a [[Combo Overlay]], it is basically always neccesary to have some other [[Grid Overlay]] in the same [[Project]] to run a calculation on.		To get started with a [[Combo Overlay]], it is basically always neccesary to have some other [[Grid Overlay]] in the same [[Project]] to run a calculation on.

Rudolf@tygron.nl at 06:44, 5 October 2023

2023-10-05T06:44:57Z

← Older revision		Revision as of 06:44, 5 October 2023
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	The masking clause has been removed, leaving only the traffic noise and conditional addition of the noise from the trains.		The masking clause has been removed, leaving only the traffic noise and conditional addition of the noise from the trains.

	Recalculate, and the results will again cover the entire [[3D ~~visualization~~]].		Recalculate, and the results will again cover the entire [[3D Visualization]].

	[[File:combo-overlay-tutorial-combo-5-small.jpg\|350px\|frame\|center\|The results of just computing the cumulative noise, rather than masking the results.]]		[[File:combo-overlay-tutorial-combo-5-small.jpg\|350px\|frame\|center\|The results of just computing the cumulative noise, rather than masking the results.]]

← Older revision		Revision as of 07:59, 9 July 2026
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	The [[Combo Overlay]] will, by itself, not show any significantly relevant results. This is because no inputs have yet been set, nor has a relevant formula been entered.		The [[Combo Overlay]] will, by itself, not show any significantly relevant results. This is because no inputs have yet been set, nor has a relevant formula been entered.

	[[File:combo-overlay-tutorial-combo-1-small.jpg\|350px\|frame\|center\|The default results of the [[Combo Overlay]] are uniform and ~~irrelevant~~.]]		[[File:combo-overlay-tutorial-combo-1-small.jpg\|350px\|frame\|center\|The default results of the [[Combo Overlay]] are uniform before inputs and formulas are configured.]]

	The [[Combo Overlay]] accepts a set of inputs, which are [[Grid Overlay]]s.		The [[Combo Overlay]] accepts a set of inputs, which are [[Grid Overlay]]s.
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	==Rasterizing and combining data==		==Rasterizing and combining data==
	[[Combo Overlay]]s are, in and of themselves, effective tools for manipulating data. ~~However, their~~ effectiveness ~~only goes as far as~~ the ~~input which can be~~ provided to them. Therefor, it is also important to know how to turn other data in the {{software}} into [[Grid Overlay]]s as well.		[[Combo Overlay]]s are, in and of themselves, effective tools for manipulating data. Their effectiveness is determined by the inputs provided to them. Therefor, it is also important to know how to turn other data in the {{software}} into [[Grid Overlay]]s as well.

	To try this out, information about train tracks will be added to the [[Combo Overlay]], or more specifically information about the proximity of train tracks.		To try this out, information about train tracks will be added to the [[Combo Overlay]], or more specifically information about the proximity of train tracks.
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	[[File:combo-overlay-tutorial-avg-overlay-small.jpg\|350px\|frame\|center\|The results of the [[Average Overlay]] when configured.]]		[[File:combo-overlay-tutorial-avg-overlay-small.jpg\|350px\|frame\|center\|The results of the [[Average Overlay]] when configured.]]

	Any cell with a value of 0 only has cells in a 100m radius with 0's. If any cell within that radius would feature a train track, the computed (average) value would be slightly more than 0. This value ~~in and of itself is not significant or useful, but can serve~~ as a filter to ~~know~~ which cells are "near a train track".		Any cell with a value of 0 only has cells in a 100m radius with 0's. If any cell within that radius would feature a train track, the computed (average) value would be slightly more than 0. This value serves as an effective filter to identify which cells are "near a train track".

	Now, switch back to the [[Combo Overlay]] by selecting it in the [[left panel]].		Now, switch back to the [[Combo Overlay]] by selecting it in the [[left panel]].
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	{{page break}}		{{page break}}
	Notice the Overlay now does not show a progressive coloring, but more of a hard-line yes-or-no indication of what is or isn't near the tracks. This ~~is both the only relevant information that can reasonably be read out~~ of the ~~Overlay,~~ and ~~also the way the information is used by~~ the Combo Overlay. This makes the Overlay clearer and more useful to the user who eventually inspects and uses the Overlay or the [[Project]] it is part of.		Notice the Overlay now does not show a progressive coloring, but more of a hard-line yes-or-no indication of what is or isn't near the tracks. This provides a clear indication of proximity to the tracks and aligns with how the Combo Overlay uses the data. This makes the Overlay clearer and more useful to the user who eventually inspects and uses the Overlay or the [[Project]] it is part of.

	The same principles of making the results more interpretable can apply to [[Combo Overlay]]s. However, the neccesity to tweak these is strongly dependent on how closely the results match the intent of legend of the first input Overlay.		The same principles of making the results more interpretable can apply to [[Combo Overlay]]s. However, the neccesity to tweak these is strongly dependent on how closely the results match the intent of legend of the first input Overlay.