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# GeoJSON

GeoJSON is a format for encoding a variety of geographic data structures.

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.

geojson.io

Point

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{
    "type": "Point",
    "coordinates": [-105, 39]
}

LineString

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{
    "type": "LineString",
    "coordinates": [
        [-105, 39],
        [-107, 38]
    ]
}

Polygon

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{
    "type": "Polygon",
    "coordinates": [
        [
            [30, 0],
            [31, 0],
            [31, 5],
            [30, 5],
            [30, 0]
        ]
    ]
}

GeometryCollection

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{
    "type": "GeometryCollection",
    "geometries": [
        {
            "type": "Point",
            "coordinates": [-105, 39]
        },
        {
            "type": "LineString",
            "coordinates": [
                [-105, 39],
                [-107, 38]
            ]
        }
    ]
}

Feature

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{
    "type": "Feature",
    "properties": {
        "name": "北京"
    },
    "geometry": {
        "type": "Point",
        "coordinates": [116.3671875, 39.977120098439634]
    }
}
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