/osm2geojson

Convert OSM and Overpass JSON to GeoJSON

Primary LanguagePythonMIT LicenseMIT

osm2geojson

Test package

Parse OSM and Overpass JSON with python. This library is under development!

Usage

Install this package with pip:

$ pip install osm2geojson

If you want to convert OSM xml or Overpass json/xml to Geojson you can import this lib and use one of 4 methods:

  • json2shapes(dict json_from_overpass) - to convert Overpass json to *Shape-objects
  • xml2shapes(str xml_from_osm) - to convert OSM xml or Overpass xml to *Shape-objects
  • json2geojson(dict json_from_overpass) - to convert Overpass json to Geojson
  • xml2geojson(str xml_from_osm) - to convert OSM xml or Overpass xml to Geojson

Additional parameters for all functions:

  • filter_used_refs - (default: True) defines geometry filtration strategy (will return all geometry if set as False)
  • log_level - (default: 'ERROR') controlls logging level (will print all logs if set as 'INFO'). More details here

Other handy methods:

  • overpass_call(str query) - runs query to overpass-api.de server (retries 5 times in case of error).
  • shape_to_feature(Shape shape, dict properties) - Converts Shape-object to GeoJSON with passed properties.

*Shape-object - for convinience created simple dict to save Shapely object (geometry) and OSM-properties. Structure of this object:

shape_obj = {
    'shape': Point | LineString | Polygon ...,
    'properties': {
        'type': 'relation' | 'node' ...,
        'tags': { ... },
        ...
    }
}

Examples

Convert OSM-xml to Geojson:

import codecs
import osm2geojson

with codecs.open('file.osm', 'r', encoding='utf-8') as data:
    xml = data.read()

geojson = osm2geojson.xml2geojson(xml, filter_used_refs=False, log_level='INFO')
# >> { "type": "FeatureCollection", "features": [ ... ] }

Convert OSM-json to Shape-objects:

import codecs
import osm2geojson

with codecs.open('file.json', 'r', encoding='utf-8') as data:
    json = data.read()

shapes_with_props = osm2geojson.json2shapes(json)
# >> [ { "shape": <Shapely-object>, "properties": {...} }, ... ]

Development

Clone project with submodules

$ git clone --recurse-submodules https://github.com/aspectumapp/osm2geojson.git

Setup package

$ python setup.py develop

Run tests

$ python -m unittest tests

Run single test

$ python tests/main.py TestOsm2GeoJsonMethods.test_barrier_wall

Update osm-polygon-features to last version (if you want last version)

$ ./update-osm-polygon-features.sh