.. _vector.geojsonseq:

GeoJSONSeq: sequence of GeoJSON features
========================================

.. versionadded:: 2.4

.. shortname:: GeoJSONSeq

.. built_in_by_default::

This driver implements read/creation support for features encoded
individually as `GeoJSON <http://geojson.org/>`__ Feature objects,
separated by newline (LF) (`Newline Delimited
JSON <http://ndjson.org/>`__) or record-separator (RS) characters (`RFC
8142 <https://tools.ietf.org/html/rfc8142>`__ standard: GeoJSON Text
Sequences)

Such files are equivalent to a GeoJSON FeatureCollection, but are more
friendly for incremental parsing.

Driver capabilities
-------------------

.. supports_create::

.. supports_georeferencing::

.. supports_virtualio::

Datasource
----------

The driver accepts three types of sources of data:

-  Uniform Resource Locator (`URL <http://en.wikipedia.org/wiki/URL>`__)
   - a Web address to perform
   `HTTP <http://en.wikipedia.org/wiki/HTTP>`__ request
-  Plain text file with GeoJSON data - identified from the file
   extension .geojsonl or .geojsons
-  Text passed directly as filename, and encoded as GeoJSON sequences

The URL/filename/text might be prefixed with GeoJSONSeq: to avoid any
ambiguity with other drivers.

Layer creation options
----------------------

-  **RS**\ =YES/NO: whether to start records with the RS=0x1E character,
   so as to be compatible with the `RFC
   8142 <https://tools.ietf.org/html/rfc8142>`__ standard. Defaults to
   NO, unless the filename extension is "geojsons"
-  **COORDINATE_PRECISION** = int_number: Maximum number of figures
   after decimal separator to write in coordinates. Default to 7.
   "Smart" truncation will occur to remove trailing zeros.
-  **SIGNIFICANT_FIGURES** = int_number: Maximum number of significant
   figures when writing floating-point numbers. Default to 17. If
   explicitly specified, and COORDINATE_PRECISION is not, this will also
   apply to coordinates.
-  **ID_FIELD**\ =string. Name of the source field that must be written
   as the 'id' member of Feature objects.
-  **ID_TYPE**\ =AUTO/String/Integer. Type of the 'id' memer of Feature
   objects.

See Also
--------

-  :ref:`GeoJSON driver <vector.geojson>`
-  `RFC 7946 <https://tools.ietf.org/html/rfc7946>`__ standard: the
   GeoJSON Format.
-  `RFC 8142 <https://tools.ietf.org/html/rfc8142>`__ standard: GeoJSON
   Text Sequences (RS separator)
-  `Newline Delimited JSON <http://ndjson.org/>`__
-  `GeoJSONL <https://www.interline.io/blog/geojsonl-extracts/>`__: An
   optimized format for large geographic datasets
