CRS¶

pyproj.CRS¶

class pyproj.crs.CRS(projparams=None, **kwargs)[source]¶

A pythonic Coordinate Reference System manager.

The functionality is based on other fantastic projects:

rasterio # noqa: E501
opendatacube # noqa: E501

srs¶

The string form of the user input used to create the CRS.

Type: str

name¶

The name of the CRS (from proj_get_name).

Type: str

type_name¶

The name of the type of the CRS object.

Type: str

__init__(projparams=None, **kwargs)[source]¶

Initialize a CRS class instance with:

PROJ string
Dictionary of PROJ parameters
PROJ keyword arguments for parameters
JSON string with PROJ parameters
CRS WKT string
An authority string [i.e. ‘epsg:4326’]
An EPSG integer code [i.e. 4326]
A tuple of (“auth_name”: “auth_code”) [i.e (‘epsg’, ‘4326’)]
An object with a to_wkt method.
A CRS

Example usage:

>>> from pyproj import CRS
>>> crs_utm = CRS.from_user_input(26915)
>>> crs_utm
<Projected CRS: EPSG:26915>
Name: NAD83 / UTM zone 15N
Axis Info [cartesian]:
- E[east]: Easting (metre)
- N[north]: Northing (metre)
Area of Use:
- name: North America - 96°W to 90°W and NAD83 by country
- bounds: (-96.0, 25.61, -90.0, 84.0)
Coordinate Operation:
- name: UTM zone 15N
- method: Transverse Mercator
Datum: North American Datum 1983
- Ellipsoid: GRS 1980
- Prime Meridian: Greenwich
<BLANKLINE>
>>> crs_utm.area_of_use.bounds
(-96.0, 25.61, -90.0, 84.0)
>>> crs_utm.ellipsoid
ELLIPSOID["GRS 1980",6378137,298.257222101,
    LENGTHUNIT["metre",1],
    ID["EPSG",7019]]
>>> crs_utm.ellipsoid.inverse_flattening
298.257222101
>>> crs_utm.ellipsoid.semi_major_metre
6378137.0
>>> crs_utm.ellipsoid.semi_minor_metre
6356752.314140356
>>> crs_utm.prime_meridian
PRIMEM["Greenwich",0,
    ANGLEUNIT["degree",0.0174532925199433],
    ID["EPSG",8901]]
>>> crs_utm.prime_meridian.unit_name
'degree'
>>> crs_utm.prime_meridian.unit_conversion_factor
0.017453292519943295
>>> crs_utm.prime_meridian.longitude
0.0
>>> crs_utm.datum
DATUM["North American Datum 1983",
    ELLIPSOID["GRS 1980",6378137,298.257222101,
        LENGTHUNIT["metre",1]],
    ID["EPSG",6269]]
>>> crs_utm.coordinate_system
CS[Cartesian,2],
    AXIS["(E)",east,
        ORDER[1],
        LENGTHUNIT["metre",1,
            ID["EPSG",9001]]],
    AXIS["(N)",north,
        ORDER[2],
        LENGTHUNIT["metre",1,
            ID["EPSG",9001]]]
>>> crs_utm.coordinate_operation
CONVERSION["UTM zone 15N",
    METHOD["Transverse Mercator",
        ID["EPSG",9807]],
    PARAMETER["Latitude of natural origin",0,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8801]],
    PARAMETER["Longitude of natural origin",-93,
        ANGLEUNIT["degree",0.0174532925199433],
        ID["EPSG",8802]],
    PARAMETER["Scale factor at natural origin",0.9996,
        SCALEUNIT["unity",1],
        ID["EPSG",8805]],
    PARAMETER["False easting",500000,
        LENGTHUNIT["metre",1],
        ID["EPSG",8806]],
    PARAMETER["False northing",0,
        LENGTHUNIT["metre",1],
        ID["EPSG",8807]],
    ID["EPSG",16015]]
>>> crs = CRS(proj='utm', zone=10, ellps='WGS84')
>>> crs.to_proj4()
'+proj=utm +zone=10 +ellps=WGS84 +units=m +no_defs +type=crs'
>>> print(crs.to_wkt(pretty=True))
PROJCRS["unknown",
    BASEGEOGCRS["unknown",
        DATUM["Unknown based on WGS84 ellipsoid",
            ELLIPSOID["WGS 84",6378137,298.257223563,
                LENGTHUNIT["metre",1],
                ID["EPSG",7030]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8901]]],
    CONVERSION["UTM zone 10N",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",-123,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.9996,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",500000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",0,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]],
        ID["EPSG",16010]],
    CS[Cartesian,2],
        AXIS["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1,
                ID["EPSG",9001]]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1,
                ID["EPSG",9001]]]]
>>> geod = crs.get_geod()
>>> "+a={:.0f} +f={:.8f}".format(geod.a, geod.f)
'+a=6378137 +f=0.00335281'
>>> crs.is_projected
True
>>> crs.is_geographic
False

area_of_use¶: returns: AreaOfUse :rtype: The area of use object with associated attributes.

axis_info¶: returns: list[Axis] :rtype: The list of axis information.

coordinate_operation¶: returns: CoordinateOperation :rtype: The coordinate operation.

coordinate_system¶: returns: CoordinateSystem :rtype: The coordinate system.

datum¶: returns: Datum :rtype: The datum.

ellipsoid¶: returns: Ellipsoid :rtype: The ellipsoid object with associated attributes.

classmethod from_authority(auth_name, code)[source]¶

Make a CRS from an authority name and authority code

Parameters

auth_name (str) – The name of the authority.
code (int or str) – The code used by the authority.

Returns

Return type

CRS

static from_cf(in_cf, errcheck=False)[source]¶

This converts a Climate and Forecast (CF) Grid Mapping Version 1.8 dict to a CRS object.

Warning

Parameters may be lost if a mapping from the CF parameter is not found. For best results store the WKT of the projection in the crs_wkt attribute.

Parameters

in_cf (dict) – CF version of the projection.
errcheck (bool, optional) – If True, will warn when parameters are ignored. Defaults to False.

Returns

Return type

CRS

classmethod from_dict(proj_dict)[source]¶

Make a CRS from a dictionary of PROJ parameters.

Parameters: proj_dict (str) – PROJ params in dict format.
Returns
Return type: CRS

classmethod from_epsg(code)[source]¶

Make a CRS from an EPSG code

Parameters: code (int or str) – An EPSG code.
Returns
Return type: CRS

classmethod from_proj4(in_proj_string)[source]¶

Make a CRS from a PROJ string

Parameters: in_proj_string (str) – A PROJ string.
Returns
Return type: CRS

classmethod from_string(in_crs_string)[source]¶

Make a CRS from:

Initialize a CRS class instance with:

PROJ string
JSON string with PROJ parameters
CRS WKT string
An authority string [i.e. ‘epsg:4326’]

Parameters: in_crs_string (str) – An EPSG, PROJ, or WKT string.
Returns
Return type: CRS

classmethod from_user_input(value)[source]¶

Initialize a CRS class instance with:

PROJ string
Dictionary of PROJ parameters
PROJ keyword arguments for parameters
JSON string with PROJ parameters
CRS WKT string
An authority string [i.e. ‘epsg:4326’]
An EPSG integer code [i.e. 4326]
A tuple of (“auth_name”: “auth_code”) [i.e (‘epsg’, ‘4326’)]
An object with a to_wkt method.
A CRS

Parameters: value (obj) – A Python int, dict, or str.
Returns
Return type: CRS

classmethod from_wkt(in_wkt_string)[source]¶

Make a CRS from a WKT string

Parameters: in_wkt_string (str) – A WKT string.
Returns
Return type: CRS

geodetic_crs¶: returns: pyproj.CRS :rtype: The the geodeticCRS / geographicCRS from the CRS.

get_geod()[source]¶

Returns: pyproj.geod.Geod
Return type: Geod object based on the ellipsoid.

is_bound¶: returns: bool :rtype: True if CRS is bound.

is_engineering¶: returns: bool :rtype: True if CRS is local/engineering.

is_exact_same(self, other)¶: Compares projection objects to see if they are exactly the same.

is_geocentric¶

This checks if the CRS is geocentric and takes into account if the CRS is bound.

Returns: bool
Return type: True if CRS is in geocentric (x/y) coordinates.

is_geographic¶

This checks if the CRS is geographic. It will check if it has a geographic CRS in the sub CRS if it is a compount CRS and will check if the source CRS is geographic if it is a bound CRS.

Returns: bool
Return type: True if the CRS is in geographic (lon/lat) coordinates.

is_projected¶

This checks if the CRS is projected. It will check if it has a projected CRS in the sub CRS if it is a compount CRS and will check if the source CRS is projected if it is a bound CRS.

Returns: bool
Return type: True if CRS is projected.

is_valid¶: returns: bool :rtype: True if CRS is valid.

is_vertical¶

This checks if the CRS is vertical. It will check if it has a vertical CRS in the sub CRS if it is a compount CRS and will check if the source CRS is vertical if it is a bound CRS.

Returns: bool
Return type: True if CRS is vertical.

name

object

Type: name

prime_meridian¶: returns: PrimeMeridian :rtype: The CRS prime meridian object with associated attributes.

source_crs¶: returns: CRS – or the source CRS of a CoordinateOperation. :rtype: The the base CRS of a BoundCRS or a DerivedCRS/ProjectedCRS,

srs

object

Type: srs

sub_crs_list¶

If the CRS is a compound CRS, it will return a list of sub CRS objects.

Returns
Return type: list[CRS]

target_crs¶: returns: CRS :rtype: The hub CRS of a BoundCRS or the target CRS of a CoordinateOperation.

to_authority(self, auth_name=None, min_confidence=70)¶

Return the authority name and code best matching the CRS or None if it a match is not found.

Example:

>>> from pyproj import CRS
>>> ccs = CRS("epsg:4328")
>>> ccs.to_authority()
('EPSG', '4328')

If the CRS is bound, you can get an authority from the source CRS:

>>> from pyproj import CRS
>>> ccs = CRS("+init=epsg:4328 +towgs84=0,0,0")
>>> ccs.to_authority()
>>> ccs.source_crs.to_authority()
('EPSG', '4978')
>>> ccs == CRS.from_authorty('EPSG', '4978')
False

Parameters

auth_name (str, optional) – The name of the authority to filter by.
min_confidence (int, optional) – A value between 0-100 where 100 is the most confident. Default is 70.

Returns

tuple(str, str) or None – matching the confidence level.

Return type

The best matching (<auth_name>, <code>)

to_cf(wkt_version='WKT2_2018', errcheck=False)[source]¶

This converts a CRS object to a Climate and Forecast (CF) Grid Mapping Version 1.8 dict.

Warning

The full projection will be stored in the crs_wkt attribute. However, other parameters may be lost if a mapping to the CF parameter is not found.

Parameters

wkt_version (str) – Version of WKT supported by ~CRS.to_wkt.
errcheck (bool, optional) – If True, will warn when parameters are ignored. Defaults to False.

Returns

dict

Return type

CF-1.8 version of the projection.

to_dict()[source]¶

Converts the CRS to dictionary of PROJ parameters.

Warning

You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems # noqa: E501

Returns: dict
Return type: PROJ params in dict format.

to_epsg(self, min_confidence=70)¶

Return the EPSG code best matching the CRS or None if it a match is not found.

Example:

>>> from pyproj import CRS
>>> ccs = CRS("epsg:4328")
>>> ccs.to_epsg()
4328

If the CRS is bound, you can attempt to get an epsg code from the source CRS:

>>> from pyproj import CRS
>>> ccs = CRS("+init=epsg:4328 +towgs84=0,0,0")
>>> ccs.to_epsg()
>>> ccs.source_crs.to_epsg()
4978
>>> ccs == CRS.from_epsg(4978)
False

Parameters: min_confidence (int, optional) – A value between 0-100 where 100 is the most confident. Default is 70.
Returns: int or None
Return type: The best matching EPSG code matching the confidence level.

to_geodetic(self)¶

Note

This is replaced with CRS.geodetic_crs

Returns: pyproj.CRS
Return type: The geodetic CRS from this CRS.

to_proj4(self, version=ProjVersion.PROJ_4)¶

Convert the projection to a PROJ string.

Warning

You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems

Parameters: version (ProjVersion) – The version of the PROJ string output. Default is PROJ_4.
Returns: str
Return type: The PROJ string.

to_string()[source]¶

Convert the CRS to a string.

It attempts to convert it to the authority string. Otherwise, it uses the string format of the user input to create the CRS.

Returns: str
Return type: String representation of the CRS.

to_wkt(self, version=u'WKT2_2018', pretty=False)¶

Convert the projection to a WKT string.

Version options:

WKT2_2015
WKT2_2015_SIMPLIFIED
WKT2_2018
WKT2_2018_SIMPLIFIED
WKT1_GDAL
WKT1_ESRI

Parameters

version (WktVersion) – The version of the WKT output. Default is WKT2_2018.
pretty (bool) – If True, it will set the output to be a multiline string. Defaults to False.

Returns

str

Return type

The WKT string.

type_name

object

Type: type_name

pyproj.crs.is_wkt¶

pyproj.crs.is_wkt(proj_string)¶

Check if the input projection string is in the Well-Known Text format.

Parameters: proj_string (str) – The projection string.
Returns: bool
Return type: True if the string is in the Well-Known Text format

Area Of Use¶

class pyproj._crs.AreaOfUse¶

Area of Use for CRS

west¶

West bound of area of use.

Type: float

south¶

South bound of area of use.

Type: float

east¶

East bound of area of use.

Type: float

north¶

North bound of area of use.

Type: float

name¶

Name of area of use.

Type: str

east

‘double’

Type: east

name

object

Type: name

north

‘double’

Type: north

south

‘double’

Type: south

west

‘double’

Type: west

Coordinate System¶

class pyproj._crs.CoordinateSystem¶

Coordinate System for CRS

name¶

The name of the coordinate system.

Type: str

axis_list¶: returns: list[Axis] :rtype: The Axis list for the coordinate system.

is_exact_same(self, other)¶: Compares projection objects to see if they are exactly the same.

name

object

Type: name

to_wkt(self, version=u'WKT2_2018', pretty=False)¶

Convert the projection to a WKT string.

Version options:

WKT2_2015
WKT2_2015_SIMPLIFIED
WKT2_2018
WKT2_2018_SIMPLIFIED
WKT1_GDAL
WKT1_ESRI

Parameters

version (WktVersion) – The version of the WKT output. Default is WKT2_2018.
pretty (bool) – If True, it will set the output to be a multiline string. Defaults to False.

Returns

str

Return type

The WKT string.

class pyproj._crs.Axis¶

Coordinate System Axis

name¶

Type: str

abbrev¶

Type: str

direction¶

Type: str

unit_conversion_factor¶

Type: float

unit_name¶

Type: str

unit_auth_code¶

Type: str

unit_code¶

Type: str

abbrev

object

Type: abbrev

direction

object

Type: direction

name

object

Type: name

unit_auth_code

object

Type: unit_auth_code

unit_code

object

Type: unit_code

unit_conversion_factor

‘double’

Type: unit_conversion_factor

unit_name

object

Type: unit_name

Coordinate Operation¶

class pyproj.crs.CoordinateOperation¶

Coordinate operation for CRS.

name¶

The name of the method(projection) with authority information.

Type: str

method_name¶

The method (projection) name.

Type: str

method_auth_name¶

The method authority name.

Type: str

method_code¶

The method code.

Type: str

is_instantiable¶

If 1, a coordinate operation can be instantiated as a PROJ pipeline. This also checks that referenced grids are available.

Type: int

has_ballpark_transformation¶

If 1, the coordinate operation has a “ballpark” transformation, that is a very approximate one, due to lack of more accurate transformations.

Type: int

accuracy¶

The accuracy (in metre) of a coordinate operation.

Type: float

accuracy

‘double’

Type: accuracy

static from_authority(auth_name, code, use_proj_alternative_grid_names=False)¶

Create a CoordinateOperation from an authority code.

Parameters

auth_name (str) – Name ot the authority.
code (str or int) – The code used by the authority.
use_proj_alternative_grid_names (bool, optional) – Use the PROJ alternative grid names. Default is False.

Returns

Return type

CoordinateOperation

static from_epsg(code, use_proj_alternative_grid_names=False)¶

Create a CoordinateOperation from an EPSG code.

Parameters

code (str or int) – The code used by EPSG.
use_proj_alternative_grid_names (bool, optional) – Use the PROJ alternative grid names. Default is False.

Returns

Return type

CoordinateOperation

static from_string(coordinate_operation_string)¶

Create a CoordinateOperation from a string.

Example

urn:ogc:def:coordinateOperation:EPSG::1671

Parameters: coordinate_operation_string (str) – Coordinate operation string.
Returns
Return type: CoordinateOperation

grids¶: returns: list[Grid] :rtype: The coordinate operation grids.

has_ballpark_transformation

object

Type: has_ballpark_transformation

is_exact_same(self, other)¶: Compares projection objects to see if they are exactly the same.

is_instantiable

object

Type: is_instantiable

method_auth_name

object

Type: method_auth_name

method_code

object

Type: method_code

method_name

object

Type: method_name

name

object

Type: name

params¶: returns: list[Param] :rtype: The coordinate operation parameters.

to_proj4(self, version=ProjVersion.PROJ_5)¶

Convert the projection to a PROJ string.

Parameters: version (ProjVersion) – The version of the PROJ string output. Default is PROJ_5.
Returns: str
Return type: The PROJ string.

to_wkt(self, version=u'WKT2_2018', pretty=False)¶

Convert the projection to a WKT string.

Version options:

WKT2_2015
WKT2_2015_SIMPLIFIED
WKT2_2018
WKT2_2018_SIMPLIFIED
WKT1_GDAL
WKT1_ESRI

Parameters

version (WktVersion) – The version of the WKT output. Default is WKT2_2018.
pretty (bool) – If True, it will set the output to be a multiline string. Defaults to False.

Returns

str

Return type

The WKT string.

towgs84¶: returns: list(float) – Otherwise an empty list. :rtype: A list of 3 or 7 towgs84 values if they exist.

class pyproj._crs.Param¶

Coordinate operation parameter.

name¶

The name of the parameter.

Type: str

auth_name¶

The authority name of the parameter (i.e. EPSG).

Type: str

code¶

The code of the parameter (i.e. 9807).

Type: str

value¶

The value of the parameter.

Type: str or double

unit_conversion_factor¶

The factor to convert to meters.

Type: double

unit_name¶

The name of the unit.

Type: str

unit_auth_name¶

The authority name of the unit (i.e. EPSG).

Type: str

unit_code¶

The code of the unit (i.e. 9807).

Type: str

unit_category¶

The category of the unit (“unknown”, “none”, “linear”, “angular”, “scale”, “time” or “parametric”).

Type: str

auth_name

object

Type: auth_name

code

object

Type: code

name

object

Type: name

unit_auth_name

object

Type: unit_auth_name

unit_category

object

Type: unit_category

unit_code

object

Type: unit_code

unit_conversion_factor

‘double’

Type: unit_conversion_factor

unit_name

object

Type: unit_name

value

object

Type: value

class pyproj._crs.Grid¶

Coordinate operation grid.

short_name¶

The short name of the grid.

Type: str

full_name¶

The full name of the grid.

Type: str

package_name¶

The the package name where the grid might be found.

Type: str

url¶

The grid URL or the package URL where the grid might be found.

Type: str

direct_download¶

If 1, url can be downloaded directly.

Type: int

open_license¶

If 1, the grid is released with an open license.

Type: int

available¶

If 1, the grid is available at runtime.

Type: int

available

object

Type: available

direct_download

object

Type: direct_download

full_name

object

Type: full_name

open_license

object

Type: open_license

package_name

object

Type: package_name

short_name

object

Type: short_name

url

object

Type: url

Datum¶

class pyproj.crs.Datum¶

Datum for CRS. If it is a compound CRS it is the horizontal datum.

name¶

The name of the datum.

Type: str

ellipsoid¶: returns: Ellipsoid :rtype: The ellipsoid object with associated attributes.

static from_authority(auth_name, code)¶

Create a Datum from an authority code.

Parameters

auth_name (str) – Name ot the authority.
code (str or int) – The code used by the authority.

Returns

Return type

Datum

static from_epsg(code)¶

Create a Datum from an EPSG code.

Parameters: code (str or int) – The code used by EPSG.
Returns
Return type: Datum

static from_string(datum_string)¶

Create a Datum from a string.

Examples

urn:ogc:def:datum:EPSG::6326
DATUM[“World Geodetic System 1984”, ELLIPSOID[“WGS 84”,6378137,298.257223563, LENGTHUNIT[“metre”,1]], ID[“EPSG”,6326]]

Parameters: datum_string (str) – Datum string.
Returns
Return type: Datum

is_exact_same(self, other)¶: Compares projection objects to see if they are exactly the same.

name

object

Type: name

prime_meridian¶: returns: PrimeMeridian :rtype: The CRS prime meridian object with associated attributes.

to_wkt(self, version=u'WKT2_2018', pretty=False)¶

Convert the projection to a WKT string.

Version options:

WKT2_2015
WKT2_2015_SIMPLIFIED
WKT2_2018
WKT2_2018_SIMPLIFIED
WKT1_GDAL
WKT1_ESRI

Parameters

version (WktVersion) – The version of the WKT output. Default is WKT2_2018.
pretty (bool) – If True, it will set the output to be a multiline string. Defaults to False.

Returns

str

Return type

The WKT string.

Ellipsoid¶

class pyproj.crs.Ellipsoid¶

Ellipsoid for CRS

name¶

The name of the ellipsoid.

Type: str

is_semi_minor_computed¶

1 if True, 0 if False

Type: int

ellipsoid_loaded¶

True if it is loaded without errors.

Type: bool

ellipsoid_loaded

object

Type: ellipsoid_loaded

static from_authority(auth_name, code)¶

Create an Ellipsoid from an authority code.

Parameters

auth_name (str) – Name ot the authority.
code (str or int) – The code used by the authority.

Returns

Return type

Ellipsoid

static from_epsg(code)¶

Create an Ellipsoid from an EPSG code.

Parameters: code (str or int) – The code used by the EPSG.
Returns
Return type: Ellipsoid

static from_string(ellipsoid_string)¶

Create an Ellipsoid from a string.

Examples

urn:ogc:def:ellipsoid:EPSG::7001
ELLIPSOID[“Airy 1830”,6377563.396,299.3249646, LENGTHUNIT[“metre”,1], ID[“EPSG”,7001]]

Parameters: ellipsoid_string (str) – Ellipsoid string.
Returns
Return type: Ellipsoid

inverse_flattening¶

The ellipsoid inverse flattening.

Returns: float or None
Return type: The inverse flattening if the projection is an ellipsoid.

is_exact_same(self, other)¶: Compares projection objects to see if they are exactly the same.

is_semi_minor_computed

object

Type: is_semi_minor_computed

name

object

Type: name

semi_major_metre¶

The ellipsoid semi major metre.

Returns: float or None
Return type: The semi major metre if the projection is an ellipsoid.

semi_minor_metre¶

The ellipsoid semi minor metre.

Returns: float or None – and the value was com puted.
Return type: The semi minor metre if the projection is an ellipsoid

to_wkt(self, version=u'WKT2_2018', pretty=False)¶

Convert the projection to a WKT string.

Version options:

WKT2_2015
WKT2_2015_SIMPLIFIED
WKT2_2018
WKT2_2018_SIMPLIFIED
WKT1_GDAL
WKT1_ESRI

Parameters

version (WktVersion) – The version of the WKT output. Default is WKT2_2018.
pretty (bool) – If True, it will set the output to be a multiline string. Defaults to False.

Returns

str

Return type

The WKT string.

Prime Meridian¶

class pyproj.crs.PrimeMeridian¶

Prime Meridian for CRS

name¶

The name of the prime meridian.

Type: str

unit_name¶

The unit name for the prime meridian.

Type: str

static from_authority(auth_name, code)¶

Create a PrimeMeridian from an authority code.

Parameters

auth_name (str) – Name ot the authority.
code (str or int) – The code used by the authority.

Returns

Return type

PrimeMeridian

static from_epsg(code)¶

Create a PrimeMeridian from an EPSG code.

Parameters: code (str or int) – The code used by EPSG.
Returns
Return type: PrimeMeridian

static from_string(prime_meridian_string)¶

Create an PrimeMeridian from a string.

Examples

urn:ogc:def:meridian:EPSG::8901
PRIMEM[“Greenwich”,0, ANGLEUNIT[“degree”,0.0174532925199433], ID[“EPSG”,8901]]

Parameters: prime_meridian_string (str) – prime meridian string.
Returns
Return type: PrimeMeridian

is_exact_same(self, other)¶: Compares projection objects to see if they are exactly the same.

longitude¶

‘double’

Type: longitude

name

object

Type: name

to_wkt(self, version=u'WKT2_2018', pretty=False)¶

Convert the projection to a WKT string.

Version options:

WKT2_2015
WKT2_2015_SIMPLIFIED
WKT2_2018
WKT2_2018_SIMPLIFIED
WKT1_GDAL
WKT1_ESRI

Parameters

version (WktVersion) – The version of the WKT output. Default is WKT2_2018.
pretty (bool) – If True, it will set the output to be a multiline string. Defaults to False.

Returns

str

Return type

The WKT string.

unit_conversion_factor¶

‘double’

Type: unit_conversion_factor

unit_name

object

Type: unit_name