Overview
This article explains how to create a GeoJSON file for a Service area by using city or postal code borders.
- Find the right geographical area
- Downloading the area as GeoJSON
- Format the GeoJSON file
- Import the Service Area
- How to reduce the file size
Find the right geographical area
- To find a geographical area that you’d like to use as a Service area on MotionTools, visit the Nominatim service. On Nominatim, you can view the borders of a city or a postal code. Here's an example of the borders of Berlin:
- Click on the Details button, scroll down to the OSM row, and copy the relation ID number.
Download the area as GeoJSON
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Go to http://polygons.openstreetmap.fr/ and enter the relation ID
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Click on the first GeoJSON link.
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Copy the json content.
Format the GeoJSON file
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The GeoJSON is in the MultiPolygon format which is not accepted by MotionTools.
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To change this download this example geojson file.
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Use a simple text editor to paste in the json content and save.
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Go to https://geojson.io/.
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Click Open and choose your GeoJSON file.
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If you want to merge multiple zip codes into one Service Area, do this step for all of your zip codes.
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Export the final GeoJSON file which will give you the right format.
Import the Service Area
- Open the MotionTools Dashboard and attach the GeoJSON file to the Service area (Settings → Service Areas). For more information, refer to Manage Service Areas.
How to reduce the file size
If your GeoJSON file size exceeds the 20kb limit, follow these steps:
Remove the inner zones if they exist
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Import the geoJSON file, open the Vector menu, select Geoprocessing Tools, click Dissolve, and then click Run.
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The inner border should now be gone. Right-click on the layer on the bottom left and select Export → Save Features As.
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Next to the File name click on the “…” button and choose a name and directory. Click Save.
Simplify the GeoJSON file
- Use Mapshaper to simplify the GeoJSON file. Follow this guide for details.
