GeoJSONL class

The newline-delimited GeoJSON (or "GeoJSON Text Sequences") text format for feature objects.

Supports a text file with each line containing exactly one feature. Features are delimited by line feeds, not commas. A text file represents a feature collection, but no "FeatureCollection" element is encoded.

Features in a sequence can be separated by (supported when decoding):

• a newline (LF) character, see Newline Delimited JSON
• a record-separator (RS) character, see RFC 8142 standard: GeoJSON Text Sequences

For encoding this implementation uses newline (LF) character as a delimiter by default. To customize encoder output you can use options named GeoJSONL.delimiterBefore and GeoJSONL.delimiterAfter taking values of String?.

Other references:

• NDJSON - Newline delimited JSON
• GDAL: GeoJSONSeq: sequence of GeoJSON features
• Interline: Even more geospatial tools supporting the "GeoJSONL" format
• Steve Bennet: Newline-delimited GeoJSON
• JSON Lines
• JSON Lines format: Why jsonl is what you need for data streams?
• JavaScript Object Notation (JSON) Text Sequences

See also the GeoJSON format for traditional GeoJSON decoding / encoding.

Constructors

GeoJSONL()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

featureFormat({GeoJsonConf? conf}) → TextFormat<FeatureContent>

The newline-delimited GeoJSON text format (encoding and decoding) for feature objects with optional conf.

Constants

contentTypeGeoJSONSeq → const String

The content type (application/geo+json-seq) for GeoJSON Text Sequences by RFC 8142.

contentTypeJSONSeq → const String

The content type (application/json-seq) for JSON Text Sequences by RFC 7464.

contentTypeNDJSON → const String

The content type (application/x-ndjson) for "Newline delimited JSON" by the specification NDJSON - Newline delimited JSON.

feature → const TextFormat<FeatureContent>

The newline-delimited GeoJSON text format (encoding and decoding) for feature objects.