Marshmallow schema validation for GeoJson
Project description
marshmallow_geojson 🌍
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Installation
marshmallow_geojson is compatible with Python 3.7 and 3.8. The recommended way to install is via poetry:
poetry add marshmallow_geojson
Using pip to install is also possible.
pip install marshmallow_geojson
GEOJSON
GeoJSON is a format for encoding a variety of geographic data structures.
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [125.6, 10.1]
},
"properties": {
"name": "Dinagat Islands"
}
}
GeoJSON supports the following geometry types: Point, LineString, Polygon, MultiPoint, MultiLineString, and MultiPolygon. Geometric objects with additional properties are Feature objects. Sets of features are contained by FeatureCollection objects.
Point
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "Point","coordinates": [-105.01621, 39.57422]}'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'Point', 'coordinates': (-105.01621, 39.57422)}
MultiPoint
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "MultiPoint", "coordinates": [ [-105.01621, 39.57422], [-80.666513, 35.053994] ]}'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'MultiPoint', 'coordinates': [(-105.01621, 39.57422), (-80.666513, 35.053994)]}
LineString
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "LineString", "coordinates": [ [-99.113159, 38.869651], [-99.0802, 38.85682], [-98.822021, 38.85682], [-98.448486, 38.848264] ]}'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'LineString', 'coordinates': [(-99.113159, 38.869651), (-99.0802, 38.85682), (-98.822021, 38.85682), (-98.448486, 38.848264)]}
MultiLineString
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "MultiLineString", "coordinates": [ [ [-105.019898, 39.574997], [-105.019598, 39.574898], [-105.019061, 39.574782] ], [ [-105.017173, 39.574402], [-105.01698, 39.574385], [-105.016636, 39.574385], [-105.016508, 39.574402], [-105.01595, 39.57427] ], [ [-105.014276, 39.573972], [-105.014126, 39.574038], [-105.013825, 39.57417], [-105.01331, 39.574452] ] ]}'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'MultiLineString', 'coordinates': [[(-105.019898, 39.574997), (-105.019598, 39.574898), (-105.019061, 39.574782)], [(-105.017173, 39.574402), (-105.01698, 39.574385), (-105.016636, 39.574385), (-105.016508, 39.574402), (-105.01595, 39.57427)], [(-105.014276, 39.573972), (-105.014126, 39.574038), (-105.013825, 39.57417), (-105.01331, 39.574452)]]}
Polygon
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "Polygon", "coordinates": [ [ [100, 0], [101, 0], [101, 1], [100, 1], [100, 0] ] ]}'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'Polygon', 'coordinates': [[(100.0, 0.0), (101.0, 0.0), (101.0, 1.0), (100.0, 1.0), (100.0, 0.0)]]}
MultiPolygon
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "MultiPolygon", "coordinates": [ [ [ [107, 7], [108, 7], [108, 8], [107, 8], [107, 7] ] ], [ [ [100, 0], [101, 0], [101, 1], [100, 1], [100, 0] ] ] ]}'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'MultiPolygon', 'coordinates': [[[(107.0, 7.0), (108.0, 7.0), (108.0, 8.0), (107.0, 8.0), (107.0, 7.0)]], [[(100.0, 0.0), (101.0, 0.0), (101.0, 1.0), (100.0, 1.0), (100.0, 0.0)]]]}
GeometryCollection
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "GeometryCollection", "geometries": [{"type": "Point", "coordinates": [-80.660805, 35.049392]}, {"type": "Polygon", "coordinates": [ [ [-80.664582, 35.044965], [-80.663874, 35.04428], [-80.662586, 35.04558], [-80.663444, 35.046036], [-80.664582, 35.044965] ] ]}, {"type": "LineString", "coordinates": [[-80.662372, 35.059509], [-80.662693, 35.059263], [-80.662844, 35.05893] ]}]}'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'GeometryCollection', 'geometries': [{'type': 'Point', 'coordinates': (-80.660805, 35.049392)}, {'type': 'Polygon', 'coordinates': [[(-80.664582, 35.044965), (-80.663874, 35.04428), (-80.662586, 35.04558), (-80.663444, 35.046036), (-80.664582, 35.044965)]]}, {'type': 'LineString', 'coordinates': [(-80.662372, 35.059509), (-80.662693, 35.059263), (-80.662844, 35.05893)]}]}
Feature
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "Feature", "geometry": { "type": "Polygon", "coordinates": [ [ [-80.724878, 35.265454], [-80.722646, 35.260338], [-80.720329, 35.260618], [-80.71681, 35.255361], [-80.704793, 35.268397], [-82.715179, 35.267696], [-80.721359, 35.267276], [-80.724878, 35.265454] ] ] }, "properties": {} }'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'Feature', 'properties': {}, 'geometry': {'type': 'Polygon', 'coordinates': [[(-80.724878, 35.265454), (-80.722646, 35.260338), (-80.720329, 35.260618), (-80.71681, 35.255361), (-80.704793, 35.268397), (-82.715179, 35.267696), (-80.721359, 35.267276), (-80.724878, 35.265454)]]}}
FeatureCollection
Simple example data:
>>> from marshmallow_geojson import GeoJSONSchema
>>> data_string = '{"type": "FeatureCollection", "features": [{"type": "Feature", "geometry": {"type": "Point", "coordinates": [-80.870885, 35.215151] }, "properties": {} }, {"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [ [ [-80.724878, 35.265454], [-80.722646, 35.260338], [-80.720329, 35.260618], [-80.704793, 35.268397], [-80.724878, 35.265454] ] ]}, "properties": {}} ] }'
>>> geojson_schema = GeoJSONSchema()
>>> geojson_schema.loads(geojson_text)
{'type': 'FeatureCollection', 'features': [{'type': 'Feature', 'geometry': {'type': 'Point', 'coordinates': (-80.870885, 35.215151)}, 'properties': {}}, {'type': 'Feature', 'geometry': {'type': 'Polygon', 'coordinates': [[(-80.724878, 35.265454), (-80.722646, 35.260338), (-80.720329, 35.260618), (-80.704793, 35.268397), (-80.724878, 35.265454)]]}, 'properties': {}}]}
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