crs module

This is the crs module.

This module contains geographic metadata structures regarding coordinate referencing systems derived from the ISO 19111 international standard and ISO 19115-1:2014, including adendums A1(2018) and A2(2020).

CompoundCRS

Bases: CoordinateReferenceSystem

A coordinate reference system describing the position of points through two or more independent coordinate reference systems.

Source code in opengis/referencing/crs.py

class CompoundCRS(CoordinateReferenceSystem):
    """
    A coordinate reference system describing the position of points through
    two or more independent coordinate reference systems.
    """

    @property
    @abstractmethod
    def components(self) -> Sequence[SingleCRS]:
        """
        The ordered list of coordinate reference systems.

        :return: The ordered list of coordinate reference systems.
        :rtype: Sequence[SingleCRS]
        """

components: Sequence[SingleCRS] abstractmethod property

The ordered list of coordinate reference systems.

:return: The ordered list of coordinate reference systems. :rtype: Sequence[SingleCRS]

CoordinateReferenceSystem

Bases: ReferenceSystem

Abstract coordinate reference system, usually defined by a coordinate system and a datum.

Source code in opengis/referencing/crs.py

class CoordinateReferenceSystem(ReferenceSystem):
    """
    Abstract coordinate reference system, usually defined by a coordinate
    system and a datum.
    """

DerivedCRS

Bases: SingleCRS

A coordinate reference system that is defined by its coordinate conversion from another coordinate reference system (not by a datum).

Source code in opengis/referencing/crs.py

class DerivedCRS(SingleCRS):
    """
    A coordinate reference system that is defined by its coordinate conversion
    from another coordinate reference system (not by a datum).
    """

    @property
    @abstractmethod
    def base_crs(self) -> CoordinateReferenceSystem:
        """
        Returns the base coordinate reference system.

        :return: The base coordinate reference system.
        :rtype: CoordinateReferenceSystem
        """

    @property
    @abstractmethod
    def conversion_from_base(self):
        """
        Returns the conversion from the base CRS to this CRS.

        :return: The conversion from the base CRS.
        :rtype: Conversion
        """

base_crs: CoordinateReferenceSystem abstractmethod property

Returns the base coordinate reference system.

:return: The base coordinate reference system. :rtype: CoordinateReferenceSystem

conversion_from_base abstractmethod property

Returns the conversion from the base CRS to this CRS.

:return: The conversion from the base CRS. :rtype: Conversion

EngineeringCRS

Bases: SingleCRS

A contextually local coordinate reference system.

Source code in opengis/referencing/crs.py

class EngineeringCRS(SingleCRS):
    """
    A contextually local coordinate reference system.
    """

    @property
    @abstractmethod
    def datum(self) -> EngineeringDatum:
        """
        Returns the datum, which must be an engineering one.

        :return: The datum
        :rtype: EngineeringDatum
        """

datum: EngineeringDatum abstractmethod property

Returns the datum, which must be an engineering one.

:return: The datum :rtype: EngineeringDatum

GeodeticCRS

Bases: SingleCRS

A coordinate reference system associated with a geodetic reference frame.

Source code in opengis/referencing/crs.py

class GeodeticCRS(SingleCRS):
    """
    A coordinate reference system associated with a geodetic reference frame.
    """

    @property
    @abstractmethod
    def datum(self) -> GeodeticDatum:
        """
        Returns the datum, which must be geodetic.

        :return: The datum.
        :rtype: GeodeticDatum
        """

datum: GeodeticDatum abstractmethod property

Returns the datum, which must be geodetic.

:return: The datum. :rtype: GeodeticDatum

GeographicCRS

Bases: GeodeticCRS

A coordinate reference system based on an ellipsoidal approximation of the geoid; this provides an accurate representation of the geometry of geographic features for a large portion of the earth's surface.

Source code in opengis/referencing/crs.py

class GeographicCRS(GeodeticCRS):
    """
    A coordinate reference system based on an ellipsoidal approximation of the
    geoid; this provides an accurate representation of the geometry of
    geographic features for a large portion of the earth's surface.
    """

    @property
    @abstractmethod
    def coordinate_system(self) -> EllipsoidalCS:
        """
        Returns the coordinate system, which must be ellipsoidal.

        :return: The coordinate system.
        :rtype: EllipsoidalCS
        """

coordinate_system: EllipsoidalCS abstractmethod property

Returns the coordinate system, which must be ellipsoidal.

:return: The coordinate system. :rtype: EllipsoidalCS

ProjectedCRS

Bases: DerivedCRS

A 2D coordinate reference system used to approximate the shape of the Earth on a planar surface.

Source code in opengis/referencing/crs.py

class ProjectedCRS(DerivedCRS):
    """
    A 2D coordinate reference system used to approximate the shape of the
    Earth on a planar surface.
    """

    @property
    @abstractmethod
    def conversion_from_base(self):
        """
        Returns the map projection from the base CRS to this CRS.

        :return: The conversion from the base CRS.
        :rtype: Conversion
        """

    @property
    @abstractmethod
    def base_crs(self) -> GeographicCRS:
        """
        Returns the base coordinate reference system, which must be geographic.

        :return: The base coordinate reference system.
        :rtype: GeographicCRS
        """

    @property
    @abstractmethod
    def coordinate_system(self) -> CartesianCS:
        """
        Returns the coordinate system, which must be cartesian.

        :return: The coordinate system.
        :rtype: CartesianCS
        """

    @property
    @abstractmethod
    def datum(self) -> GeodeticDatum:
        """
        Returns the datum.

        :return: The datum.
        :rtype: GeodeticDatum
        """

base_crs: GeographicCRS abstractmethod property

Returns the base coordinate reference system, which must be geographic.

:return: The base coordinate reference system. :rtype: GeographicCRS

conversion_from_base abstractmethod property

Returns the map projection from the base CRS to this CRS.

:return: The conversion from the base CRS. :rtype: Conversion

coordinate_system: CartesianCS abstractmethod property

Returns the coordinate system, which must be cartesian.

:return: The coordinate system. :rtype: CartesianCS

datum: GeodeticDatum abstractmethod property

Returns the datum.

:return: The datum. :rtype: GeodeticDatum

ReferenceSystem

Bases: IdentifiedObject

Description of a spatial and temporal reference system used by a dataset.

This class is derived from MD_ReferenceSystem described in the ISO 19115-1:2014, including addendums A1(2018) and A2(2020), and ISO 19115-2:2019, including addendum A1(2022), international standards.

Source code in opengis/referencing/crs.py

class ReferenceSystem(IdentifiedObject):
    """
    Description of a spatial and temporal reference system used by a dataset.

    This class is derived from MD_ReferenceSystem described in the
    ISO 19115-1:2014, including addendums A1(2018) and A2(2020),
    and ISO 19115-2:2019, including addendum A1(2022), international standards.
    """
    @property
    @abstractmethod
    def reference_system_identifier(self) -> Optional[Identifier]:
        """
        Identifier and codespace for reference system.

        NOTE: Refer to to SC_CRS in ISO 19111 and ISO 19111-2 when coordinate
        reference system information is not given through reference system
        identifier.

        Example: EPSG::4326

        MANDATORY: if `crs` is `None`.
        """

    @property
    @abstractmethod
    def coordinate_reference_system(self) -> \
            Optional['CoordinateReferenceSystem']:
        """
        Full description of the coordinate reference system from which a set
        of coordinates is referenced.

        MANDATORY: if `reference_system_identifier` is `None`.
        """

    @property
    @abstractmethod
    def coordinate_epoch(self) -> Optional[DataEpoch]:
        """
        The epoch from which coordinates in a dynamic coordinate reference
        system are referenced.

        MANDATORY: if the coordinate reference system is dynamic.
        """

    @property
    @abstractmethod
    def reference_system_type(self) -> ReferenceSystemTypeCode:
        """
        Type of reference system used.

        Example: `COMPOUND_GEOGRAPHIC2D_PARAMETRIC`
        (compoundGeographic2DParametric)
        """

coordinate_epoch: Optional[DataEpoch] abstractmethod property

The epoch from which coordinates in a dynamic coordinate reference system are referenced.

MANDATORY: if the coordinate reference system is dynamic.

coordinate_reference_system: Optional[CoordinateReferenceSystem] abstractmethod property

Full description of the coordinate reference system from which a set of coordinates is referenced.

MANDATORY: if reference_system_identifier is None.

reference_system_identifier: Optional[Identifier] abstractmethod property

Identifier and codespace for reference system.

NOTE: Refer to to SC_CRS in ISO 19111 and ISO 19111-2 when coordinate reference system information is not given through reference system identifier.

Example: EPSG::4326

MANDATORY: if crs is None.

reference_system_type: ReferenceSystemTypeCode abstractmethod property

Type of reference system used.

Example: COMPOUND_GEOGRAPHIC2D_PARAMETRIC (compoundGeographic2DParametric)

ReferenceSystemTypeCode

Bases: Enum

Defines type of reference system used.

This class is derived from ISO 19115-1:2014, including adendums A1(2018) and A2(2020).

Source code in opengis/referencing/crs.py

class ReferenceSystemTypeCode(Enum):
    """
    Defines type of reference system used.

    This class is derived from ISO 19115-1:2014, including adendums A1(2018)
    and A2(2020).
    """

    COMPOUND_ENGINEERING_PARAMETRIC = "compoundEngineeringParametric"
    """
    Compound spatio-parametric coordinate reference system containing an
    engineering coordinate reference system and a parametric reference system.

    EXAMPLE: [local] x, y, pressure
    """

    COMPOUND_ENGINEERING_PARAMETRIC_TEMPORAL = \
        "compoundEngineeringParametricTemporal"
    """
    Compound spatio-parametric-temporal coordinate reference system containing,
    an engineering coordinate reference system, a parametric reference system,
    and a temporal coordinate reference system.

    EXAMPLE: [local] x, y, pressure, time
    """

    COMPOUND_ENGINEERING_TEMPORAL = "compoundEngineeringTemporal"
    """
    Compound spatio-temporal coordinate reference system containing,
    an engineering coordinate reference system and a temporal coordinate
    reference system.

    EXAMPLE: [local] x, y, time
    """

    COMPOUND_ENGINEERING_VERTICAL = "compoundEngineeringVertical"
    """
    Compound spatial coordinate reference system containing a horizontal
    engineering coordinate reference system and a vertical coordinate
    reference system.

    EXAMPLE: [local] x, y, height
    """

    COMPOUND_ENGINEERING_VERTICAL_TEMPORAL = \
        "compoundEngineeringVerticalTemporal"
    """
    Compound spatio-temporal coordinate reference system containing an
    engineering, a vertical, and a temporal coordinate reference system.

    EXAMPLE: [local] x, y, height, time
    """

    COMPOUND_GEOGRAPHIC2D_PARAMETRIC = "compoundGeographic2DParametric"
    """
    Compound spatio-parametric coordinate reference system containing a 2
    dimensional geographic horizontal coordinate reference system and a
    parametric reference system.

    EXAMPLE: latitude, longitude, pressure
    """

    COMPOUND_GEOGRAPHIC2D_PARAMETRIC_TEMPORAL = \
        "compoundGeographic2DParametricTemporal"
    """
    Compound spatio-parametric-temporal coordinate reference system containing
    a 2 dimensional geographic horizontal, a parametric, and a temporal
    reference system.

    EXAMPLE: latitude, longitude, pressure, time
    """

    COMPOUND_GEOGRAPHIC2D_TEMPORAL = "compoundGeographic2DTemporal"
    """
    Compound spatio-temporal coordinate reference system containing
    a 2 dimensional geographic horizontal coordinate reference system and a
    temporal reference system.

    EXAMPLE: latitude, longitude, time
    """

    COMPOUND_GEOGRAPHIC2D_VERTICAL = "compoundGeographic2DVertical"
    """
    Compound coordinate reference system in which one constituent coordinate
    reference system ais a horizontal geodetic coordinate reference system and
    one is a vertical reference system.

    EXAMPLE: latitude, longitude, [gravity-related] height or depth
    """

    COMPOUND_GEOGRAPHIC2D_VERTICAL_TEMPORAL = \
        "compoundGeographic2DVerticalTemporal"
    """
    Compound spatio-temporal coordinate reference system containing a
    2 dimensional geographic horizontal, a vertical, and a temporal coordinate
    reference system.

    EXAMPLE: latitude, longitude, height, time
    """

    COMPOUND_GEOGRAPHIC3D_TEMPORAL = "compoundGeographic3DTemporal"
    """
    Compound spatio-temporal coordinate reference system containing a
    3 dimensional geographic and a temporal coordinate reference system.

    EXAMPLE: latitude, longitude, ellipsoidal height, time
    """

    COMPOUND_PROJECTED2D_PARAMETRIC = "compoundProjected2DParametric"
    """
    Compound spatio-parametric coordinate reference system containing a
    projected horizontal coordinate reference system and a parametric
    reference system.

    EXAMPLE: easting, northing, density
    """

    COMPOUND_PROJECTED2D_PARAMETRIC_TEMPORAL = \
        "compoundProjected2DParametricTemporal"
    """
    Compound spatio-parametric-temporal coordinate reference system containing
    a projected horizontal, a parametric, and a temporal coordinate reference
    system.

    EXAMPLE: easting, northing, density, time
    """

    COMPOUND_PROJECTED_TEMPORAL = "compoundProjectedTemporal"
    """
    Compound spatial reference system containing a horizontal projected
    coordinate reference system and a vertical coordinate reference system.

    EXAMPLE: easting, northing, [gravity-related] height or depth
    """

    COMPOUND_PROJECTED_VERTICAL = "compoundProjectedVertical"
    """
    Compound spatial reference system containing a horizontal projected
    coordinate reference system and a vertical coordinate reference system.

    EXAMPLE: easting, northing, [gravity-related] height or depth
    """

    COMPOUND_PROJECTED_VERTICAL_TEMPORAL = "compoundProjectedVerticalTemporal"
    """
    Compound spatio-temporal coordinate reference system containing a
    projected horizontal, a vertical, and a temporal coordinate reference
    system.

    EXAMPLE: easting, northing, height, time
    """

    ENGINEERING = "engineering"
    """
    Coordinate reference system based on an engineering datum (datum
    describing the relationship of a coordinate system to a local reference).

    EXAMPLE: [local] x, y
    """

    ENGINEERING_DESIGN = "engineeringDesign"
    """
    Engineering coordinate reference system in which the base representation
    of a moving object is specified.

    EXAMPLE: [local] x, y
    """

    ENGINEERING_IMAGE = "engineeringImage"
    """
    Coordinate reference system based on an image datum (engineering datum
    which defines the relationship of a coordinate system to an image).

    EXAMPLE: row, column
    """

    GEODETIC_GEOCENTRIC = "geodeticGeocentric"
    """
    Geodetic coordinate reference system having a Cartesian 3D coordinate
    system.

    EXAMPLE: [geocentric] X, Y, Z
    """

    GEODETIC_GEOGRAPHIC_2D = "geodeticGeographic2D"
    """
    Geodetic coordinate reference system having an ellipsoidal 2D coordinate
    system.

    EXAMPLE: latitude, longitude
    """

    GEODETIC_GEOGRAPHIC_3D = "geodeticGeographic3D"
    """
    Geodetic coordinate reference system having an ellipsoidal 3D coordinate
    system.

    EXAMPLE: latitude, longitude, ellipsoidal height
    """

    GEOGRAPHIC_IDENTIFIER = "geographicIdentifier"
    """
    Spatial reference in the form of a label or code that identifies a
    location.

    EXAMPLE: post coade
    """

    LINEAR = "linear"
    """
    Reference system that identifies a location by reference to a segment of a
    linear geographic feature and distance along that segment from a given
    point.

    EXAMPLE: x km along road
    """

    PARAMETRIC = "parametric"
    """
    Coordinate reference system based on a parametric datum (datum describing
    the relationship of a parametric coordinate system to an object).

    EXAMPLE: pressure
    """

    PROJECTED = "projected"
    """
    Coordinate reference system derived from a two-dimensional geodetic
    coordinate reference system by applying a map projection.

    EXAMPLE: easting, northing
    """

    TEMPORAL = "temporal"
    """
    Reference system against which time is measured.

    EXAMPLE: time
    """

    VERTICAL = "vertical"
    """
    One-dimensional coordinate reference system based on a vertical datum
    (datum describing the relation of gravity-related heights or depths
    to the Earth).

    EXAMPLE: [gravity-related] height or depth
    """

COMPOUND_ENGINEERING_PARAMETRIC = 'compoundEngineeringParametric' class-attribute instance-attribute

Compound spatio-parametric coordinate reference system containing an engineering coordinate reference system and a parametric reference system.

EXAMPLE: [local] x, y, pressure

COMPOUND_ENGINEERING_PARAMETRIC_TEMPORAL = 'compoundEngineeringParametricTemporal' class-attribute instance-attribute

Compound spatio-parametric-temporal coordinate reference system containing, an engineering coordinate reference system, a parametric reference system, and a temporal coordinate reference system.

EXAMPLE: [local] x, y, pressure, time

COMPOUND_ENGINEERING_TEMPORAL = 'compoundEngineeringTemporal' class-attribute instance-attribute

Compound spatio-temporal coordinate reference system containing, an engineering coordinate reference system and a temporal coordinate reference system.

EXAMPLE: [local] x, y, time

COMPOUND_ENGINEERING_VERTICAL = 'compoundEngineeringVertical' class-attribute instance-attribute

Compound spatial coordinate reference system containing a horizontal engineering coordinate reference system and a vertical coordinate reference system.

EXAMPLE: [local] x, y, height

COMPOUND_ENGINEERING_VERTICAL_TEMPORAL = 'compoundEngineeringVerticalTemporal' class-attribute instance-attribute

Compound spatio-temporal coordinate reference system containing an engineering, a vertical, and a temporal coordinate reference system.

EXAMPLE: [local] x, y, height, time

COMPOUND_GEOGRAPHIC2D_PARAMETRIC = 'compoundGeographic2DParametric' class-attribute instance-attribute

Compound spatio-parametric coordinate reference system containing a 2 dimensional geographic horizontal coordinate reference system and a parametric reference system.

EXAMPLE: latitude, longitude, pressure

COMPOUND_GEOGRAPHIC2D_PARAMETRIC_TEMPORAL = 'compoundGeographic2DParametricTemporal' class-attribute instance-attribute

Compound spatio-parametric-temporal coordinate reference system containing a 2 dimensional geographic horizontal, a parametric, and a temporal reference system.

EXAMPLE: latitude, longitude, pressure, time

COMPOUND_GEOGRAPHIC2D_TEMPORAL = 'compoundGeographic2DTemporal' class-attribute instance-attribute

Compound spatio-temporal coordinate reference system containing a 2 dimensional geographic horizontal coordinate reference system and a temporal reference system.

EXAMPLE: latitude, longitude, time

COMPOUND_GEOGRAPHIC2D_VERTICAL = 'compoundGeographic2DVertical' class-attribute instance-attribute

Compound coordinate reference system in which one constituent coordinate reference system ais a horizontal geodetic coordinate reference system and one is a vertical reference system.

EXAMPLE: latitude, longitude, [gravity-related] height or depth

COMPOUND_GEOGRAPHIC2D_VERTICAL_TEMPORAL = 'compoundGeographic2DVerticalTemporal' class-attribute instance-attribute

Compound spatio-temporal coordinate reference system containing a 2 dimensional geographic horizontal, a vertical, and a temporal coordinate reference system.

EXAMPLE: latitude, longitude, height, time

COMPOUND_GEOGRAPHIC3D_TEMPORAL = 'compoundGeographic3DTemporal' class-attribute instance-attribute

Compound spatio-temporal coordinate reference system containing a 3 dimensional geographic and a temporal coordinate reference system.

EXAMPLE: latitude, longitude, ellipsoidal height, time

COMPOUND_PROJECTED2D_PARAMETRIC = 'compoundProjected2DParametric' class-attribute instance-attribute

Compound spatio-parametric coordinate reference system containing a projected horizontal coordinate reference system and a parametric reference system.

EXAMPLE: easting, northing, density

COMPOUND_PROJECTED2D_PARAMETRIC_TEMPORAL = 'compoundProjected2DParametricTemporal' class-attribute instance-attribute

Compound spatio-parametric-temporal coordinate reference system containing a projected horizontal, a parametric, and a temporal coordinate reference system.

EXAMPLE: easting, northing, density, time

COMPOUND_PROJECTED_TEMPORAL = 'compoundProjectedTemporal' class-attribute instance-attribute

Compound spatial reference system containing a horizontal projected coordinate reference system and a vertical coordinate reference system.

EXAMPLE: easting, northing, [gravity-related] height or depth

COMPOUND_PROJECTED_VERTICAL = 'compoundProjectedVertical' class-attribute instance-attribute

Compound spatial reference system containing a horizontal projected coordinate reference system and a vertical coordinate reference system.

EXAMPLE: easting, northing, [gravity-related] height or depth

COMPOUND_PROJECTED_VERTICAL_TEMPORAL = 'compoundProjectedVerticalTemporal' class-attribute instance-attribute

Compound spatio-temporal coordinate reference system containing a projected horizontal, a vertical, and a temporal coordinate reference system.

EXAMPLE: easting, northing, height, time

ENGINEERING = 'engineering' class-attribute instance-attribute

Coordinate reference system based on an engineering datum (datum describing the relationship of a coordinate system to a local reference).

EXAMPLE: [local] x, y

ENGINEERING_DESIGN = 'engineeringDesign' class-attribute instance-attribute

Engineering coordinate reference system in which the base representation of a moving object is specified.

EXAMPLE: [local] x, y

ENGINEERING_IMAGE = 'engineeringImage' class-attribute instance-attribute

Coordinate reference system based on an image datum (engineering datum which defines the relationship of a coordinate system to an image).

EXAMPLE: row, column

GEODETIC_GEOCENTRIC = 'geodeticGeocentric' class-attribute instance-attribute

Geodetic coordinate reference system having a Cartesian 3D coordinate system.

EXAMPLE: [geocentric] X, Y, Z

GEODETIC_GEOGRAPHIC_2D = 'geodeticGeographic2D' class-attribute instance-attribute

Geodetic coordinate reference system having an ellipsoidal 2D coordinate system.

EXAMPLE: latitude, longitude

GEODETIC_GEOGRAPHIC_3D = 'geodeticGeographic3D' class-attribute instance-attribute

Geodetic coordinate reference system having an ellipsoidal 3D coordinate system.

EXAMPLE: latitude, longitude, ellipsoidal height

GEOGRAPHIC_IDENTIFIER = 'geographicIdentifier' class-attribute instance-attribute

Spatial reference in the form of a label or code that identifies a location.

EXAMPLE: post coade

LINEAR = 'linear' class-attribute instance-attribute

Reference system that identifies a location by reference to a segment of a linear geographic feature and distance along that segment from a given point.

EXAMPLE: x km along road

PARAMETRIC = 'parametric' class-attribute instance-attribute

Coordinate reference system based on a parametric datum (datum describing the relationship of a parametric coordinate system to an object).

EXAMPLE: pressure

PROJECTED = 'projected' class-attribute instance-attribute

Coordinate reference system derived from a two-dimensional geodetic coordinate reference system by applying a map projection.

EXAMPLE: easting, northing

TEMPORAL = 'temporal' class-attribute instance-attribute

Reference system against which time is measured.

EXAMPLE: time

VERTICAL = 'vertical' class-attribute instance-attribute

One-dimensional coordinate reference system based on a vertical datum (datum describing the relation of gravity-related heights or depths to the Earth).

EXAMPLE: [gravity-related] height or depth

SingleCRS

Bases: CoordinateReferenceSystem

Abstract coordinate reference system, consisting of a single Coordinate System and a single Datum.

Source code in opengis/referencing/crs.py

class SingleCRS(CoordinateReferenceSystem):
    """
    Abstract coordinate reference system, consisting of a single Coordinate
    System and a single Datum.
    """

    @property
    @abstractmethod
    def coordinate_system(self) -> CoordinateSystem:
        """
        Returns the coordinate system.

        :return: The coordinate system.
        :rtype: CoordinateSystem
        """

    @property
    @abstractmethod
    def datum(self) -> Datum:
        """
        Returns the datum.

        :return: The datum
        :rtype: Datum
        """

coordinate_system: CoordinateSystem abstractmethod property

Returns the coordinate system.

:return: The coordinate system. :rtype: CoordinateSystem

datum: Datum abstractmethod property

Returns the datum.

:return: The datum :rtype: Datum

TemporalCRS

Bases: SingleCRS

A 1D coordinate reference system used for the recording of time.

Source code in opengis/referencing/crs.py

class TemporalCRS(SingleCRS):
    """
    A 1D coordinate reference system used for the recording of time.
    """

    @property
    @abstractmethod
    def coordinate_system(self) -> TimeCS:
        """
        Returns the coordinate system, which must be temporal.

        :return: The coordinate system.
        :rtype: TimeCS
        """

    @property
    @abstractmethod
    def datum(self) -> TemporalDatum:
        """
        Returns the datum, which must be temporal.

        :return: The datum
        :rtype: TemporalDatum
        """

coordinate_system: TimeCS abstractmethod property

Returns the coordinate system, which must be temporal.

:return: The coordinate system. :rtype: TimeCS

datum: TemporalDatum abstractmethod property

Returns the datum, which must be temporal.

:return: The datum :rtype: TemporalDatum

VerticalCRS

Bases: SingleCRS

A 1D coordinate reference system used for recording heights or depths.

Source code in opengis/referencing/crs.py

class VerticalCRS(SingleCRS):
    """
    A 1D coordinate reference system used for recording heights or depths.
    """

    @property
    @abstractmethod
    def coordinate_system(self) -> VerticalCS:
        """
        Returns the coordinate system, which must be vertical.

        :return: The coordinate system.
        :rtype: VerticalCS
        """

    @property
    @abstractmethod
    def datum(self) -> VerticalDatum:
        """
        Returns the datum, which must be vertical.

        :return: The datum
        :rtype: VerticalDatum
        """

coordinate_system: VerticalCS abstractmethod property

Returns the coordinate system, which must be vertical.

:return: The coordinate system. :rtype: VerticalCS

datum: VerticalDatum abstractmethod property

Returns the datum, which must be vertical.

:return: The datum :rtype: VerticalDatum