Merge pull request #1857 from rouault/rfc4_doc_improvementsrfc4_dev

[RFC4_dev] Doc improvements

1 files changed, 0 insertions, 267 deletions

diff --git a/docs/source/usage/projjson.rst b/docs/source/usage/projjson.rst
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--- a/docs/source/usage/projjson.rst
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-.. _projjson:
-
-================================================================================
-PROJJSON
-================================================================================
-
-PROJJSON is a JSON encoding of
-`WKT2:2019 / ISO-19162:2019 <http://docs.opengeospatial.org/is/18-010r7/18-010r7.html>`_,
-which itself implements the model of
-`OGC Topic 2: Referencing by coordinates <http://docs.opengeospatial.org/as/18-005r4/18-005r4.html>`_.
-Apart from the difference of encodings, the semantics is intended to be exactly
-the same as WKT2:2019.
-
-PROJJSON is available as input and output of PROJ since PROJ 6.2.
-
-The current version is 0.2.
-
-Schema
-------
-
-A JSON schema of its grammar is available at
-https://proj.org/schemas/v0.2/projjson.schema.json
-
-History
--------
-
-* v0.2: addition of geoid_model in VerticalCRS object.
-* v0.1: initial version for PROJ 6.2
-
-Content
--------
-
-The high level objects are:
-
-* Coordinate Reference Systems (CRS):
-
-  - Common ones:
-
-    + ``GeographicCRS``
-    + ``GeodeticCRS``
-    + ``ProjectedCRS``
-    + ``CompoundCRS``
-    + ``BoundCRS``
-
-  - More esoteric ones:
-
-    + ``VerticalCRS``
-    + ``EngineeringCRS``
-    + ``TemporalCRS``
-    + ``ParametricCRS``
-    + ``DerivedGeographicCRS``
-    + ``DerivedGeodeticCRS``
-    + ``DerivedProjectedCRS``
-    + ``DerivedVerticalCRS``
-    + ``DerivedEngineeringCRS``
-    + ``DerivedTemporalCRS``
-    + ``DerivedParametricCRS``
-
-* Coordinate operations:
-
-  - ``Transformation``
-  - ``Conversion``
-  - ``ConcatenatedOperation``
-
-* Others:
-
-  - ``PrimeMeridian``
-  - ``Ellipsoid``
-  - ``Datum``
-  - ``DatumEnsemble``
-
-Examples
---------
-
-GeographicCRS
-+++++++++++++
-
-The following invokation
-
-::
-
-    projinfo EPSG:4326 -o PROJJSON -q
-
-will output:
-
-.. code-block:: json
-
-    {
-        "$schema": "https://proj.org/schemas/v0.1/projjson.schema.json",
-        "type": "GeographicCRS",
-        "name": "WGS 84",
-        "datum": {
-            "type": "GeodeticReferenceFrame",
-            "name": "World Geodetic System 1984",
-            "ellipsoid": {
-                "name": "WGS 84",
-                "semi_major_axis": 6378137,
-                "inverse_flattening": 298.257223563
-            }
-        },
-        "coordinate_system": {
-            "subtype": "ellipsoidal",
-            "axis": [
-            {
-                "name": "Geodetic latitude",
-                "abbreviation": "Lat",
-                "direction": "north",
-                "unit": "degree"
-            },
-            {
-                "name": "Geodetic longitude",
-                "abbreviation": "Lon",
-                "direction": "east",
-                "unit": "degree"
-            }
-            ]
-        },
-        "area": "World",
-        "bbox": {
-            "south_latitude": -90,
-            "west_longitude": -180,
-            "north_latitude": 90,
-            "east_longitude": 180
-        },
-        "id": {
-            "authority": "EPSG",
-            "code": 4326
-        }
-    }
-
-
-ProjectedCRS
-++++++++++++
-
-The following invokation
-
-::
-
-    projinfo EPSG:32631 -o PROJJSON -q
-
-will output:
-
-.. code-block:: json
-
-    {
-        "$schema": "https://proj.org/schemas/v0.1/projjson.schema.json",
-        "type": "ProjectedCRS",
-        "name": "WGS 84 / UTM zone 31N",
-        "base_crs": {
-            "name": "WGS 84",
-            "datum": {
-                "type": "GeodeticReferenceFrame",
-                "name": "World Geodetic System 1984",
-                "ellipsoid": {
-                    "name": "WGS 84",
-                    "semi_major_axis": 6378137,
-                    "inverse_flattening": 298.257223563
-                }
-            },
-            "coordinate_system": {
-                "subtype": "ellipsoidal",
-                "axis": [
-                {
-                    "name": "Geodetic latitude",
-                    "abbreviation": "Lat",
-                    "direction": "north",
-                    "unit": "degree"
-                },
-                {
-                    "name": "Geodetic longitude",
-                    "abbreviation": "Lon",
-                    "direction": "east",
-                    "unit": "degree"
-                }
-                ]
-            },
-            "id": {
-                "authority": "EPSG",
-                "code": 4326
-            }
-        },
-        "conversion": {
-            "name": "UTM zone 31N",
-            "method": {
-                "name": "Transverse Mercator",
-                "id": {
-                    "authority": "EPSG",
-                    "code": 9807
-                }
-            },
-            "parameters": [
-            {
-                "name": "Latitude of natural origin",
-                "value": 0,
-                "unit": "degree",
-                "id": {
-                "authority": "EPSG",
-                "code": 8801
-                }
-            },
-            {
-                "name": "Longitude of natural origin",
-                "value": 3,
-                "unit": "degree",
-                "id": {
-                "authority": "EPSG",
-                "code": 8802
-                }
-            },
-            {
-                "name": "Scale factor at natural origin",
-                "value": 0.9996,
-                "unit": "unity",
-                "id": {
-                "authority": "EPSG",
-                "code": 8805
-                }
-            },
-            {
-                "name": "False easting",
-                "value": 500000,
-                "unit": "metre",
-                "id": {
-                "authority": "EPSG",
-                "code": 8806
-                }
-            },
-            {
-                "name": "False northing",
-                "value": 0,
-                "unit": "metre",
-                "id": {
-                "authority": "EPSG",
-                "code": 8807
-                }
-            }
-            ]
-        },
-        "coordinate_system": {
-            "subtype": "Cartesian",
-            "axis": [
-            {
-                "name": "Easting",
-                "abbreviation": "E",
-                "direction": "east",
-                "unit": "metre"
-            },
-            {
-                "name": "Northing",
-                "abbreviation": "N",
-                "direction": "north",
-                "unit": "metre"
-            }
-            ]
-        },
-        "area": "World - N hemisphere - 0°E to 6°E - by country",
-        "bbox": {
-            "south_latitude": 0,
-            "west_longitude": 0,
-            "north_latitude": 84,
-            "east_longitude": 6
-        },
-        "id": {
-            "authority": "EPSG",
-            "code": 32631
-        }
-    }