GeoJSON

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.

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.

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 Tygron Platform. The requirements are:

• The file must be saved in GeoJSON format
• The file must have a CRS (Coordinate Reference System) defined
• 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, this page.

Also take a look at the data preparation page for considerations and tips regarding importing geo data.

How to create a GeoJSON file:

1. Open the Geo Dataset in a GIS
2. Save the file in GeoJSON format with encoding UTF-8

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

• Go to the documentation for ArcGIS
• Go to the documentation for 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

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.

How to save a dataset in GeoJSON format in ArcGIS:

1. Open the dataset in ArcMap
2. In the Menu bar go to the Menu Customize and choose Extensions
3. Select the Data Interoperability Extension
4. Choose the Quick Export tool from the Data Interoperability Toolbox
5. In the Quick Export tool: choose the input layer, set as output format GeoJSON and provide a location for saving the exported dataset

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  Navigate in the Menu bar to Customize and then click on Extensions

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  Select the Data Interoperability Extension

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  Choose the Quick Export tool in the Data Interoperability Toolbox

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  Select the input layer and click on the button (see image)

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  Choose the GeoJSON output format and the right location and dataset name for saving the new dataset

How to load a GeoJSON file into the Tygron Platform

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.

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Geo Data

Project Sources

Open data sources • GeoShare • Custom Geometry

Web

WFS • WMS • WCS • CSW • Map service

File

CityGML • DXF • GeoJSON • GeoTIFF • SLPK

Import

Vector • Raster • 2D spatial plan • 3D model (I3S, CityGML)

Export

Vector • Raster • GeoShare Viewer