GeoJSON

Was ist GeoJSON?

Dialekt für Geodatentypen der textuellen "JavaScript Object Notation" (JSON).

Siehe auch Geobuf und OGR-Konverter.

Notizen:

• Currently, GeoJSON is supported as output format of services implemented by FeatureServer, GeoServer and CartoWeb3.
• Ein einfacher GPX zu GeoJSON Konverter: gpx2GeoJSON
• Binär codiertes GeoJSON: GeoBSON (.geobson) and Arc GeoServices BSON (.arcbson) BSON-encoded GeoJSON and Arc JSON, see http://bsonspec.org/#/specification
• Bei QGIS kann mit Drag&Drop ein GeoJSON File dargestellt werden(?).

Tipps und Tricks

Tools:

• Collection of GeoJSON tools: https://github.com/tmcw/awesome-geojson !
• http://gitspatial.com/ - Repository with display and API of geodata using GeoJSON format/files.
• http://osm.dumoulin63.net/osm2kml/ and http://aaronlidman.com/osm-and-geojson/ - GeoJSON Converter, see also Online Geoconverter
• PostGIS-Terminal e.g. with following SQL script: SELECT ST_AsGeoJSON(way) geom FROM osm_poi WHERE tags @> hstore('tourism','zoo')

geojson.io - The GeoJSON Editor

Editor based on GeoJSON (with export e.g. to Shapefile): http://geojson.io/#map=18/47.22267/8.81300

Convertcsv.com - Convert GeoJSON to CSV

Convert GeoJSON to CSV: http://www.convertcsv.com/geojson-to-csv.htm

geojsonlint.com - Calidate and view your GeoJSON

https://geojsonlint.com

Dropchop.io - Process GeoJSON (1)

https://dropchop.io

MapShaper.org - Process GeoJSON (2)

https://mapshaper.org/

Reducing unnecessary digits with regex

Use this regex to reduce to 5 digits in lat/lon coordinates. Replace by group "\1" e.g. in Notepad++. See https://regex101.com/r/eR4sU3/3 :

 ([0-9]*\.[0-9][0-9][0-9][0-9][0-9])[0-9]*