How to create an interest area GeoJSON - Revision history

Frank@tygron.nl at 14:43, 29 May 2026

2026-05-29T14:43:30Z

← Older revision		Revision as of 14:43, 29 May 2026
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	** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.		** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.
	* No [[Attribute]]s need to be added to the features. [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[Interest area (Area Attribute)\|INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to each of the [[Area]]s added in this way.		* No [[Attribute]]s need to be added to the features. [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[Interest area (Area Attribute)\|INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to each of the [[Area]]s added in this way.
			\|seealso=*[[QGIS]]
			*[[GeoJSON]]
	}}		}}

	[[Category:How-to's]]		[[Category:How-to's]]

Frank@tygron.nl at 14:14, 5 March 2026

2026-03-05T14:14:04Z

← Older revision		Revision as of 14:14, 5 March 2026
Line 23:		Line 23:
	** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.		** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.
	* No [[Attribute]]s need to be added to the features. [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[Interest area (Area Attribute)\|INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to each of the [[Area]]s added in this way.		* No [[Attribute]]s need to be added to the features. [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[Interest area (Area Attribute)\|INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to each of the [[Area]]s added in this way.
	* In The Netherlands, using Open Basis Kaart (https://www.openbasiskaart.nl/mapcache) as a WMS is a good way to obtain a background layer.
	}}		}}

	[[Category:How-to's]]		[[Category:How-to's]]

Frank@tygron.nl at 14:12, 5 March 2026

2026-03-05T14:12:47Z

← Older revision		Revision as of 14:12, 5 March 2026
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	* Multiple discrete features may be present in a single Interest Area GeoJSON. Each feature will be loaded in as a separate [[Area]].		* Multiple discrete features may be present in a single Interest Area GeoJSON. Each feature will be loaded in as a separate [[Area]].
	** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.		** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.
	* No [[Attribute]]s need to be added to the features. [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to each of the [[Area]]s added in this way.		* No [[Attribute]]s need to be added to the features. [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[Interest area (Area Attribute)\|INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to each of the [[Area]]s added in this way.
	* In The Netherlands, using Open Basis Kaart (https://www.openbasiskaart.nl/mapcache) as a WMS is a good way to obtain a background layer.		* In The Netherlands, using Open Basis Kaart (https://www.openbasiskaart.nl/mapcache) as a WMS is a good way to obtain a background layer.
	}}		}}

	[[Category:How-to's]]		[[Category:How-to's]]

Frank@tygron.nl at 14:12, 5 March 2026

2026-03-05T14:12:25Z

← Older revision		Revision as of 14:12, 5 March 2026
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	\| At the CRS, select an appropriate CRS.		\| At the CRS, select an appropriate CRS.
	\| Click "OK" to complete the export.		\| Click "OK" to complete the export.
	\| A GeoJSON file with a polygon defining the [[Interest area (Area Attribute)\|~~INTEREST_AREA~~]] has now been created.		\| A GeoJSON file with a polygon defining the [[Interest area (Area Attribute)\|Area of Interest]] has now been created.
	}}		}}

Frank@tygron.nl at 14:12, 5 March 2026

2026-03-05T14:12:08Z

← Older revision		Revision as of 14:12, 5 March 2026
Line 15:		Line 15:
	\| At the CRS, select an appropriate CRS.		\| At the CRS, select an appropriate CRS.
	\| Click "OK" to complete the export.		\| Click "OK" to complete the export.
	\| A GeoJSON file with a polygon defining the [[~~INTEREST_AREA\|~~Interest Area]] has now been created.		\| A GeoJSON file with a polygon defining the [[Interest area (Area Attribute)\|INTEREST_AREA]] has now been created.
	}}		}}

Frank@tygron.nl at 14:11, 5 March 2026

2026-03-05T14:11:53Z

← Older revision		Revision as of 14:11, 5 March 2026
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	For some calculation models, often those found in [[Project Template]]s, the actual area of interest to consider results of does extent across the entire extent of a [[Project]]. Instead, only a specific polygon may be relevant. This polygon is known as [[~~INTEREST_AREA~~\|Interest Area]]. While creating a new [[Project]], it is also possible to use a file defining such an area to automatically select the appropriate location and extent for the new [[Project]]. However, this relies on having a [[GeoJSON]] file with such a definition before starting work on a Project.		For some calculation models, often those found in [[Project Template]]s, the actual area of interest to consider results of does extent across the entire extent of a [[Project]]. Instead, only a specific polygon may be relevant. This polygon is known as [[Interest area (Area Attribute)\|Interest Area]]. While creating a new [[Project]], it is also possible to use a file defining such an area to automatically select the appropriate location and extent for the new [[Project]]. However, this relies on having a [[GeoJSON]] file with such a definition before starting work on a Project.

	These steps describe the process in QGIS, but similar steps in other GIS applications can yield the same result.		These steps describe the process in QGIS, but similar steps in other GIS applications can yield the same result.

Frank@tygron.nl at 14:01, 30 January 2024

2024-01-30T14:01:33Z

← Older revision		Revision as of 14:01, 30 January 2024
Line 25:		Line 25:
	* In The Netherlands, using Open Basis Kaart (https://www.openbasiskaart.nl/mapcache) as a WMS is a good way to obtain a background layer.		* In The Netherlands, using Open Basis Kaart (https://www.openbasiskaart.nl/mapcache) as a WMS is a good way to obtain a background layer.
	}}		}}

			[[Category:How-to's]]

Rudolf@tygron.nl at 11:46, 8 August 2023

2023-08-08T11:46:28Z

← Older revision		Revision as of 11:46, 8 August 2023
Line 22:		Line 22:
	* Multiple discrete features may be present in a single Interest Area GeoJSON. Each feature will be loaded in as a separate [[Area]].		* Multiple discrete features may be present in a single Interest Area GeoJSON. Each feature will be loaded in as a separate [[Area]].
	** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.		** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.
	* [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to ~~all~~ [[Area]]s added in this way.		* No [[Attribute]]s need to be added to the features. [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to each of the [[Area]]s added in this way.
	* In The Netherlands, using Open Basis Kaart (https://www.openbasiskaart.nl/mapcache) as a WMS is a good way to obtain a background layer.		* In The Netherlands, using Open Basis Kaart (https://www.openbasiskaart.nl/mapcache) as a WMS is a good way to obtain a background layer.
	}}		}}

Rudolf@tygron.nl: Created page with "For some calculation models, often those found in Project Templates, the actual area of interest to consider results of does extent across the entire extent of a Project. Instead, only a specific polygon may be relevant. This polygon is known as Interest Area. While creating a new Project, it is also possible to use a file defining such an area to automatically select the appropriate location and extent for the new Project. However, this..."

2023-08-08T11:42:50Z

Created page with "For some calculation models, often those found in Project Templates, the actual area of interest to consider results of does extent across the entire extent of a Project. Instead, only a specific polygon may be relevant. This polygon is known as Interest Area. While creating a new Project, it is also possible to use a file defining such an area to automatically select the appropriate location and extent for the new Project. However, this..."

New page

For some calculation models, often those found in [[Project Template]]s, the actual area of interest to consider results of does extent across the entire extent of a [[Project]]. Instead, only a specific polygon may be relevant. This polygon is known as [[INTEREST_AREA|Interest Area]]. While creating a new [[Project]], it is also possible to use a file defining such an area to automatically select the appropriate location and extent for the new [[Project]]. However, this relies on having a [[GeoJSON]] file with such a definition before starting work on a Project.

These steps describe the process in QGIS, but similar steps in other GIS applications can yield the same result.

{{editor steps|title=create an interest area GeoJSON
| Open a new or existing project in QGIS.
| Ensure some background layer exists, so that its possible to know where new features are drawn.
| Move the view to the location where the Interest Area is to be located.
| In the top menu, select Layer → Create Layer → New Temporary Scratch Layer
| Set the Name to "Interest Area", set Geometry Type to Polygon, and click "Ok"
| Use the Add Polygon Feature to draw a polygon in the correct location. Ensure it fits the area of interest as exactly as possible.
| Right-click the layer in the "Layers" list, and select Export → Save Features As
| Set the Format to GeoJSON.
| At the input for the File Name, select the location to save the GeoJSON file to.
| At the CRS, select an appropriate CRS.
| Click "OK" to complete the export.
| A GeoJSON file with a polygon defining the [[INTEREST_AREA|Interest Area]] has now been created.
}}

{{article end
|notes=
* Multiple discrete features may be present in a single Interest Area GeoJSON. Each feature will be loaded in as a separate [[Area]].
** When using MultiPolygons, each feature consisting of multiple Polygons will be loaded in as a single [[Area]] with multiple polygons.
* [[Attribute]]s of the features in the GeoJSON file will be ignored when using it during [[Project generation]]. Instead, a single [[INTEREST_AREA]] [[Attribute]] with a value of "1" will be added to all [[Area]]s added in this way.
* In The Netherlands, using Open Basis Kaart (https://www.openbasiskaart.nl/mapcache) as a WMS is a good way to obtain a background layer.
}}