GeoJSON - Revision history

Frank@tygron.nl at 09:43, 30 January 2023

2023-01-30T09:43:42Z

← Older revision		Revision as of 09:43, 30 January 2023
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	~~[[Category:Files]]~~

	GeoJSON is a file format for geographical data. It is a simple text-based format which can be read by humans, but also by computers. Any Geo Dataset in another format can be converted to the GeoJSON file format.		GeoJSON is a file format for geographical data. It is a simple text-based format which can be read by humans, but also by computers. Any Geo Dataset in another format can be converted to the GeoJSON file format.

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	{{Template:GeoDataOverview}}		{{Template:GeoDataOverview}}
			[[Category:Files]]

Maxim@tygron.com at 11:53, 5 October 2022

2022-10-05T11:53:56Z

← Older revision		Revision as of 11:53, 5 October 2022
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	~~{{learned\|what a GeoJSON is\|how to create a GeoJSON file\|how to upload GeoJSON data into the {{software}}}}~~
	[[Category:Files]]		[[Category:Files]]

	~~==What is GeoJSON==~~
	GeoJSON is a file format for geographical data. It is a simple text-based format which can be read by humans, but also by computers. Any Geo Dataset in another format can be converted to the GeoJSON file format.		GeoJSON is a file format for geographical data. It is a simple text-based format which can be read by humans, but also by computers. Any Geo Dataset in another format can be converted to the GeoJSON file format.

Godelief@tygron.com at 14:38, 26 March 2021

2021-03-26T14:38:41Z

← Older revision		Revision as of 14:38, 26 March 2021
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	==How to create a GeoJSON file==		==How to create a GeoJSON file==
	To convert a Geo ~~Data set so that it meets these requirements, for example~~ a GIS (Geographical Information System) can be used. ArcGIS Desktop is one example. An open-source alternative is QGIS.		To convert a Geo Dataset to a GeoJSON a GIS (Geographical Information System) can be used. ArcGIS Desktop is one example. An open-source alternative is QGIS.

			*Go to the documentation for [[How_to_create_a_GeoJSON_file_in_ArcMap\|ArcGIS]]
			*Go to the documentation for [[How_to_create_a_GeoJSON_in_QGIS\|QGIS]]

			Also take a look at the [[Data_preparation\|data preparation]] page for considerations and tips regarding importing geo data.

			====Notes====
	The GeoJSON file must conform to a number of prerequisites before it can be loaded properly. Files which do not conform to these prerequisites may not be loaded properly by the {{software}}. The requirements are:		The GeoJSON file must conform to a number of prerequisites before it can be loaded properly. Files which do not conform to these prerequisites may not be loaded properly by the {{software}}. The requirements are:
	* The file must be saved in GeoJSON format		* The file must be saved in GeoJSON format
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	* All desired attributes must be numerical, so that they can be loaded as valid [[attribute]] values. Attributes with text values are ignored when attempting to load them as attributes. See for steps, [[Data_preparation#Text_attributes\|this page]].		* All desired attributes must be numerical, so that they can be loaded as valid [[attribute]] values. Attributes with text values are ignored when attempting to load them as attributes. See for steps, [[Data_preparation#Text_attributes\|this page]].

	~~Also take a look at the [[Data_preparation\|data preparation]] page for considerations and tips regarding importing geo data.~~

	~~The next sections show how to create a GeoJSON file in ArcGIS en QGIS.~~

	*Go to the documentation for [[How_to_create_a_GeoJSON_file_in_ArcMap\|ArcGIS]]
	*Go to the documentation for [[How_to_create_a_GeoJSON_in_QGIS\|QGIS]]

	==How to ~~load a~~ GeoJSON file ~~into the {{software}}~~==		==How to import GeoJSON file==
	<!--[[File:GeoJSON_received.jpg\|framed\|right\|After either dragging and dropping the GeoJSON file, or selecting a file with the file-selection window, this window will appear.]]-->		<!--[[File:GeoJSON_received.jpg\|framed\|right\|After either dragging and dropping the GeoJSON file, or selecting a file with the file-selection window, this window will appear.]]-->
	Use the [[Geo Data Wizard]] for importing the created file. Select in step 1 the first option: ''Import a GeoJSON file'' and follow the steps in the wizard.		Use the [[Geo Data Wizard]] for importing the created file. Select in step 1 the first option: ''Import a GeoJSON file'' and follow the steps in the wizard.
	<br>		<br>
	{{Template:GeoDataOverview}}		{{Template:GeoDataOverview}}

Godelief@tygron.com: /* How to create a GeoJSON file */

2021-03-26T14:36:19Z

How to create a GeoJSON file

← Older revision		Revision as of 14:36, 26 March 2021
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	Also take a look at the [[Data_preparation\|data preparation]] page for considerations and tips regarding importing geo data.		Also take a look at the [[Data_preparation\|data preparation]] page for considerations and tips regarding importing geo data.


	~~{{editor steps\|title=create a GeoJSON file\|Open the Geo Dataset in a GIS\|Save the file in GeoJSON format with encoding UTF-8}}~~

	The next sections show how to create a GeoJSON file in ArcGIS en QGIS.		The next sections show how to create a GeoJSON file in ArcGIS en QGIS.

	*Go to the documentation for [[~~#How_to_create_a_GeoJSON_file_in_ArcGIS~~\|ArcGIS]]		*Go to the documentation for [[How_to_create_a_GeoJSON_file_in_ArcMap\|ArcGIS]]
	*Go to the documentation for [[~~#How_to_create_a_GeoJSON_file_in_QGIS~~\|QGIS]]		*Go to the documentation for [[How_to_create_a_GeoJSON_in_QGIS\|QGIS]]

	~~===How to create a GeoJSON file in QGIS===~~
	~~These steps for creating a GeoJSON file in QGIS are described in more detail below.~~

	~~===How to create a GeoJSON file in ArcGIS===~~

	==How to load a GeoJSON file into the {{software}}==		==How to load a GeoJSON file into the {{software}}==

Godelief@tygron.com: /* How to create a GeoJSON file in ArcGIS */

2021-03-26T14:35:05Z

How to create a GeoJSON file in ArcGIS

← Older revision		Revision as of 14:35, 26 March 2021
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	===How to create a GeoJSON file in ArcGIS===		===How to create a GeoJSON file in ArcGIS===
	~~A GeoJSON file can also be created in ArcGIS using the Data Interoperability Extension. Without this extension, it is not possible to create a GeoJSON file.~~
	~~Keep in mind that the JSON output data format is not the same as the GeoJSON format.~~
	~~Below the steps are provided for creating a GeoJSON file in ArcGIS.~~


	{{editor steps\|title=save a dataset in GeoJSON format in ArcGIS\|Open the dataset in ArcMap\|In the Menu bar go to the Menu Customize and choose Extensions\|Select the Data Interoperability Extension\|Choose the Quick Export tool from the Data Interoperability Toolbox\|In the Quick Export tool: choose the input layer, set as output format GeoJSON and provide a location for saving the exported dataset}}


	~~<gallery mode="nolines">~~
	~~File:Customize.png\|Navigate in the Menu bar to Customize and then click on Extensions~~
	~~File:Extensions.png\|Select the Data Interoperability Extension~~
	~~File:Quick_export.png\|Choose the Quick Export tool in the Data Interoperability Toolbox~~
	~~File:Quick_export_popup.png\|Select the input layer and click on the button (see image)~~
	~~File:Format_location.png\|Choose the GeoJSON output format and the right location and dataset name for saving the new dataset~~
	~~</gallery><br clear=all>~~

	==How to load a GeoJSON file into the {{software}}==		==How to load a GeoJSON file into the {{software}}==

Godelief@tygron.com: /* How to create a GeoJSON file in QGIS */

2021-03-26T14:34:27Z

How to create a GeoJSON file in QGIS

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 ===How to create a GeoJSON file in QGIS===
 These steps for creating a GeoJSON file in QGIS are described in more detail below.
 ===How to create a GeoJSON file in ArcGIS===

Rudolf@tygron.nl at 14:21, 11 June 2020

2020-06-11T14:21:10Z

← Older revision		Revision as of 14:21, 11 June 2020
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	{{Template:GeoDataOverview}}		{{Template:GeoDataOverview}}

	~~[[Category:file]]~~

Rudolf@tygron.nl at 14:20, 11 June 2020

2020-06-11T14:20:47Z

← Older revision		Revision as of 14:20, 11 June 2020
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	<br>		<br>
	{{Template:GeoDataOverview}}		{{Template:GeoDataOverview}}

			[[Category:file]]

Godelief@tygron.nl: /* How to create a GeoJSON file */

2019-08-21T13:56:52Z

How to create a GeoJSON file

← Older revision		Revision as of 13:56, 21 August 2019
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	* The file must have a CRS (Coordinate Reference System) defined		* The file must have a CRS (Coordinate Reference System) defined
	* The file must use character encoding UTF-8.		* The file must use character encoding UTF-8.
	* All desired attributes must be numerical, so that they can be loaded as valid [[attribute]] values. Attributes with text values are ignored when attempting to load them as attributes. See for steps, [[~~https://previewsupport.tygron.com/wiki/~~Data_preparation#Text_attributes\|this page]].		* All desired attributes must be numerical, so that they can be loaded as valid [[attribute]] values. Attributes with text values are ignored when attempting to load them as attributes. See for steps, [[Data_preparation#Text_attributes\|this page]].

	Also take a look at the [[Data_preparation\|data preparation]] page for considerations and tips regarding importing geo data.		Also take a look at the [[Data_preparation\|data preparation]] page for considerations and tips regarding importing geo data.


	{{editor steps\|title=create a GeoJSON file\|Open the Geo Dataset in a GIS\|Save the file in GeoJSON format with encoding UTF-8}}		{{editor steps\|title=create a GeoJSON file\|Open the Geo Dataset in a GIS\|Save the file in GeoJSON format with encoding UTF-8}}

Godelief@tygron.nl: /* How to create a GeoJSON file */

2019-08-21T13:56:26Z

How to create a GeoJSON file

← Older revision		Revision as of 13:56, 21 August 2019
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	* The file must have a CRS (Coordinate Reference System) defined		* The file must have a CRS (Coordinate Reference System) defined
	* The file must use character encoding UTF-8.		* The file must use character encoding UTF-8.
	* All desired attributes must be numerical, so that they can be loaded as valid [[attribute]] values. Attributes with text values are ignored when attempting to load them as attributes.		* All desired attributes must be numerical, so that they can be loaded as valid [[attribute]] values. Attributes with text values are ignored when attempting to load them as attributes. See for steps, [[https://previewsupport.tygron.com/wiki/Data_preparation#Text_attributes\|this page]].

			Also take a look at the [[Data_preparation\|data preparation]] page for considerations and tips regarding importing geo data.

	{{editor steps\|title=create a GeoJSON file\|Open the Geo Dataset in a GIS~~\|Optional: make sure all desired attributes are numerical~~\|Save the file in GeoJSON format with encoding UTF-8}}		{{editor steps\|title=create a GeoJSON file\|Open the Geo Dataset in a GIS\|Save the file in GeoJSON format with encoding UTF-8}}

	The next sections show how to create a GeoJSON file in ArcGIS en QGIS.		The next sections show how to create a GeoJSON file in ArcGIS en QGIS.
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	</gallery><br clear=all>		</gallery><br clear=all>

	====2~~. Optional: Modifying attributes====~~		====2. Saving====
	If the Geo Data file contains attributes that need to be imported as well, those attributes need to be numbers, conforming to the requirements of [[attribute]]s in the {{software}}. If there are attributes that need to be imported which are not numeric, those attributes can be used for creating new attributes. A new attribute can be calculated, with its data type set to either "integer" or "real" (with some precision), and a value based on the value of the original attribute. This process must be repeated for each attribute that needs to be imported. When this is done, the result will be a set of attributes which can be imported into the {{software}}.
	~~<gallery mode="nolines">~~
	~~File:QGISAttributeMenu.jpg\|The "Open Attribute Table" option in the menu~~
	~~File:QGISAttributeTable.jpg\|The Attribute Table shows the attributes of all shapes~~
	~~File:QGISFieldCalculatorMenu.jpg\|The "Field Calculator" option in the menu~~
	~~File:QGISFieldCalculator.jpg\|The "Field Calculator" window~~
	~~File:QGISAttributeTableDone.jpg\|The Attribute Table now contains a new numeric attribute~~
	~~</gallery><br clear=all>~~
	{{editor steps\|title=create fields for attributes which are not yet numeric\|Select Layer → Open Attribute Table\|Select the "Field Calculator" option\|Set an "Output field name" for the new field\|Set the "Output field type" to "integer" or "real"\|Set the "Output field width" and "precision", so that the desired numeric values will fit in the field\|Create an expression which indicates how the field should be calculated\|Select "OK"\|Repeat steps 2 through 7 for all desired attributes}}

	~~====3~~. Saving====
	The last step is to save the file as a GeoJSON file. This can be done by clicking on the specific layer with the right mouse button and selecting the "Save as" option. Choose the GeoJSON format, a location and file name and the UTF-8 character set. Saving will create a new ".geojson" file with all the desired data, ready to import into the {{software}}.		The last step is to save the file as a GeoJSON file. This can be done by clicking on the specific layer with the right mouse button and selecting the "Save as" option. Choose the GeoJSON format, a location and file name and the UTF-8 character set. Saving will create a new ".geojson" file with all the desired data, ready to import into the {{software}}.
	<gallery mode="nolines">		<gallery mode="nolines">