35160622_47161840_R40_F89.gsb
For the reverse transformation from IGM95 to Monte Mario, iteration may be avoided by using an alternative grid file (35160622_47161840_F89_R40.gsb).
Istituto Geografico Militare (IGM), www.igmi.org
2023-01-17
degree (supplier to define representation)
EPSG
ENI
2021-05-13
Geodesy, offshore minerals management.
Italy - onshore and offshore; San Marino, Vatican City State.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ GEOGCRS["Monte Mario", DATUM["Monte Mario", ELLIPSOID["International 1924",6378388,297, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], USAGE[ SCOPE["Geodesy, offshore minerals management."], AREA["Italy - onshore and offshore; San Marino, Vatican City State."], BBOX[34.76,5.93,47.1,18.99]], ID["EPSG",4265]]], TARGETCRS[ GEOGCRS["IGM95", DATUM["Istituto Geografico Militaire 1995", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], USAGE[ SCOPE["Horizontal component of 3D system."], AREA["Italy - onshore and offshore; San Marino, Vatican City State."], BBOX[34.76,5.93,47.1,18.99]], ID["EPSG",4670]]], ABRIDGEDTRANSFORMATION["Monte Mario to IGM95 (4)", METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","35160622_47161840_R40_F89.gsb"], USAGE[ SCOPE["Transformation of coordinates at 0.1m level of accuracy."], AREA["Italy - onshore and offshore between 6°22'E and 18°40'E and north of 35°16'N; San Marino, Vatican City State."], BBOX[35.26,6.36,47.1,18.67]], ID["EPSG",9733], REMARK["For the reverse transformation from IGM95 to Monte Mario, iteration may be avoided by using an alternative grid file (35160622_47161840_F89_R40.gsb)."]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "GeographicCRS", "name": "Monte Mario", "datum": { "type": "GeodeticReferenceFrame", "name": "Monte Mario", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 } }, "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": 4265 } }, "target_crs": { "type": "GeographicCRS", "name": "IGM95", "datum": { "type": "GeodeticReferenceFrame", "name": "Istituto Geografico Militaire 1995", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 } }, "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": 4670 } }, "transformation": { "name": "Monte Mario to IGM95 (4)", "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "35160622_47161840_R40_F89.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "id": { "authority": "EPSG", "code": 9733 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=longlat +ellps=intl +no_defs +type=crs"> <Layer srs="+proj=longlat +ellps=intl +no_defs +type=crs"> </Layer> </Map>