GeoJSON is a format for encoding a variety of geographic data structures. A GeoJSON object may represent a geometry, a feature, or a collection of features. GeoJSON supports the following geometry types: Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, and GeometryCollection. Features in GeoJSON contain a geometry object and additional properties, and a feature collection represents a list of features.
A complete GeoJSON data structure is always an object (in JSON terms). In GeoJSON, an object consists of a collection of name/value pairs -- also called members. For each member, the name is always a string. Member values are either a string, number, object, array or one of the literals: "true", "false" and "null". An array consists of elements where each element is a value as described above.
This text has been taken from http://www.geojson.org/geojson-spec.html
This is a Memory Dataset.
The following example GeoJSON is for a simple Polygon item:
{
"type": "FeatureCollection",
"crs": {
"type": "name",
"properties": {
"name": "EPSG:4326"
}
},
"features": [
{
"type": "Feature",
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
25.0974512743628,
86.8965517241379
],
[
-81.2293853073463,
86.8965517241379
],
[
-81.2293853073463,
15.1124437781109
],
[
25.0974512743628,
15.1124437781109
],
[
25.0974512743628,
86.8965517241379
]
]
]
},
"properties": {
"Description": "Polygon",
"Item ID": 1,
"Item class": "Polygon",
"Origin X": -3124289.15689667,
"Origin Y": 5677794.71782184,
"Origin Z": 0
}
}
]
}
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