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The Spatial Reference class, represents OGR Spatial Reference objects.
Example:
>>> from django.contrib.gis.gdal import SpatialReference
>>> srs = SpatialReference('WGS84')
>>> print(srs)
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
TOWGS84[0,0,0,0,0,0,0],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.01745329251994328,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4326"]]
>>> print(srs.proj)
+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs
>>> print(srs.ellipsoid)
(6378137.0, 6356752.3142451793, 298.25722356300003)
>>> print(srs.projected, srs.geographic)
False True
>>> srs.import_epsg(32140)
>>> print(srs.name)
NAD83 / Texas South Central
� )�byref�c_char_p�c_int)�IntEnum)�GDALBase)� SRSException)� GDAL_VERSION)�srs)� force_bytes� force_strc @ s e Zd ZdZdZdS )� AxisOrderr � N)�__name__�
__module__� __qualname__� TRADITIONAL� AUTHORITY� r r �=/usr/lib/python3/dist-packages/django/contrib/gis/gdal/srs.pyr ' s r c @ s� e Zd ZdZejZdLdd�Zdd� Zd d
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dd� Zdd� Zdd� Zdd� Zed d � �Zed d � �Zed d!� �Zed"d#� �Zed$d%� �Zed&d'� �Zed(d)� �Zed*d+� �Zed,d-� �Zed.d/� �Z ed0d1� �Z ed2d3� �Z ed4d5� �Z ed6d7� �Z d8d9� Z!d:d;� Z"d<d=� Z#d>d?� Z$d@dA� Z%edBdC� �Z&edMdDdE��Z'edFdG� �Z(edHdI� �Z)edNdJdK��Z*dS )O�SpatialReferencez�
A wrapper for the OGRSpatialReference object. According to the GDAL Web site,
the SpatialReference object "provide[s] services to represent coordinate
systems (projections and datums) and to transform between them."
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Create a GDAL OSR Spatial Reference object from the given input.
The input may be string of OGC Well Known Text (WKT), an integer
EPSG code, a PROJ string, and/or a projection "well known" shorthand
string (one of 'WGS84', 'WGS72', 'NAD27', 'NAD83').
Nz:SpatialReference.axis_order must be an AxisOrder instance.�wkt� )� r z"%s is not supported in GDAL < 3.0.zEPSG:%d�epsg�ogrzInvalid SRS type "%s"z+Could not create spatial reference from: %sr )�
isinstance�typer �
ValueErrorr �
axis_order�capi�new_srsr �ptr�
import_wktr �set_axis_strategy�str�int�ptr_type� TypeErrorr �import_user_input� import_epsg)�self� srs_input�srs_typer �sridr �bufr r r �__init__4 sV �
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Return the value of the given string attribute node, None if the node
doesn't exist. Can also take a tuple as a parameter, (target, child),
where child is the index of the attribute in the WKT. For example:
>>> wkt = 'GEOGCS["WGS 84", DATUM["WGS_1984, ... AUTHORITY["EPSG","4326"]]'
>>> srs = SpatialReference(wkt) # could also use 'WGS84', or 4326
>>> print(srs['GEOGCS'])
WGS 84
>>> print(srs['DATUM'])
WGS_1984
>>> print(srs['AUTHORITY'])
EPSG
>>> print(srs['AUTHORITY', 1]) # The authority value
4326
>>> print(srs['TOWGS84', 4]) # the fourth value in this wkt
0
>>> print(srs['UNIT|AUTHORITY']) # For the units authority, have to use the pipe symbole.
EPSG
>>> print(srs['UNIT|AUTHORITY', 1]) # The authority value for the units
9122
)r �tuple�
attr_value�r, �targetr r r � __getitem__q s
z SpatialReference.__getitem__c C � | j S )zUse 'pretty' WKT.)�
pretty_wkt�r, r r r �__str__� s zSpatialReference.__str__r c C s, t |t�r
t |t�s t�t�| jt|�|�S )z�
The attribute value for the given target node (e.g. 'PROJCS'). The index
keyword specifies an index of the child node to return.
)r r& r' r) r! �get_attr_valuer# r
)r, r5 �indexr r r r3 � s zSpatialReference.attr_valuec C � t �| jt|��S )z;Return the authority name for the given string target node.)r! �
get_auth_namer# r
r4 r r r � auth_name� � zSpatialReference.auth_namec C r= )z;Return the authority code for the given string target node.)r! �
get_auth_coder# r
r4 r r r � auth_code� r@ zSpatialReference.auth_codec C s t t�| j�| jd�S )z/Return a clone of this SpatialReference object.)r )r r! � clone_srsr# r r9 r r r �clone� � zSpatialReference.clonec C � t �| j� dS )z7Morph this SpatialReference from ESRI's format to EPSG.N)r! �morph_from_esrir# r9 r r r � from_esri� � zSpatialReference.from_esric C rF )z�
This method inspects the WKT of this SpatialReference, and will
add EPSG authority nodes where an EPSG identifier is applicable.
N)r! �
identify_epsgr# r9 r r r rJ � s z SpatialReference.identify_epsgc C rF )z-Morph this SpatialReference to ESRI's format.N)r! �
morph_to_esrir# r9 r r r �to_esri� rI zSpatialReference.to_esric C rF )z5Check to see if the given spatial reference is valid.N)r! � srs_validater# r9 r r r �validate� rI zSpatialReference.validatec C s4 | j r| �d�S | jr| �d�S | jr| �d�S dS )z*Return the name of this Spatial Reference.�PROJCS�GEOGCS�LOCAL_CSN)� projectedr3 �
geographic�localr9 r r r �name� s
zSpatialReference.namec C s, z t | �dd��W S ttfy Y dS w )z=Return the SRID of top-level authority, or None if undefined.r r
N)r' r3 r) r r9 r r r r/ � s
�zSpatialReference.sridc C � t �| jtt� ��\}}|S )z$Return the name of the linear units.�r! � linear_unitsr# r r �r, �unitsrU r r r � linear_name� � z SpatialReference.linear_namec C � t �| jtt� ��\}}|S )z%Return the value of the linear units.rW rY r r r rX � r\ z SpatialReference.linear_unitsc C rV )z%Return the name of the angular units.�r! �
angular_unitsr# r r rY r r r � angular_name� r\ z SpatialReference.angular_namec C r] )z&Return the value of the angular units.r^ rY r r r r_ � r\ z SpatialReference.angular_unitsc C sd d\}}| j s
| jrt�| jtt� ��\}}n| jr&t�| jtt� ��\}}|dur.t |�}||fS )z�
Return a 2-tuple of the units value and the units name. Automatically
determine whether to return the linear or angular units.
)NNN)
rR rT r! rX r# r r rS r_ r rY r r r rZ � s zSpatialReference.unitsc C s | j | j| jfS )z
Return a tuple of the ellipsoid parameters:
(semimajor axis, semiminor axis, and inverse flattening)
)�
semi_major�
semi_minor�inverse_flatteningr9 r r r � ellipsoid� � zSpatialReference.ellipsoidc C � t �| jtt� ��S )z6Return the Semi Major Axis for this Spatial Reference.)r! ra r# r r r9 r r r ra � zSpatialReference.semi_majorc C rf )z6Return the Semi Minor Axis for this Spatial Reference.)r! rb r# r r r9 r r r rb rg zSpatialReference.semi_minorc C rf )z9Return the Inverse Flattening for this Spatial Reference.)r! �
invflatteningr# r r r9 r r r rc
rg z#SpatialReference.inverse_flatteningc C � t t�| j��S )zd
Return True if this SpatialReference is geographic
(root node is GEOGCS).
)�boolr! � isgeographicr# r9 r r r rS re zSpatialReference.geographicc C ri )zFReturn True if this SpatialReference is local (root node is LOCAL_CS).)rj r! �islocalr# r9 r r r rT s zSpatialReference.localc C ri )zw
Return True if this SpatialReference is a projected coordinate system
(root node is PROJCS).
)rj r! � isprojectedr# r9 r r r rR re zSpatialReference.projectedc C � t �| j|� dS )z=Import the Spatial Reference from the EPSG code (an integer).N)r! � from_epsgr# )r, r r r r r+ & r@ z SpatialReference.import_epsgc C rn )z0Import the Spatial Reference from a PROJ string.N)r! � from_projr# )r, �projr r r � import_proj* r@ z SpatialReference.import_projc C s t �| jt|�� dS )z>Import the Spatial Reference from the given user input string.N)r! �from_user_inputr# r
)r, �
user_inputr r r r* . rE z"SpatialReference.import_user_inputc C s t �| jttt|���� dS )z2Import the Spatial Reference from OGC WKT (string)N)r! �from_wktr# r r r
)r, r r r r r$ 2 s zSpatialReference.import_wktc C rn )z0Import the Spatial Reference from an XML string.N)r! �from_xmlr# )r, �xmlr r r �
import_xml6 r@ zSpatialReference.import_xmlc C rf )z8Return the WKT representation of this Spatial Reference.)r! �to_wktr# r r r9 r r r r ; rg zSpatialReference.wktc C s t �| jtt� �|�S )z.Return the 'pretty' representation of the WKT.)r! �
to_pretty_wktr# r r )r, �simplifyr r r r8 @ s zSpatialReference.pretty_wktc C rf )z:Return the PROJ representation for this Spatial Reference.)r! �to_projr# r r r9 r r r rq E rg zSpatialReference.projc C r7 )zAlias for proj().)rq r9 r r r �proj4J s zSpatialReference.proj4c C s t �| jtt� �t|��S )z8Return the XML representation of this Spatial Reference.)r! �to_xmlr# r r r
)r, �dialectr r r rw O s zSpatialReference.xml)r r N)r )r )+r r r �__doc__r! � release_srs�
destructorr1 r6 r: r3 r? rB rD rH rJ rL rN �propertyrU r/ r[ rX r` r_ rZ rd ra rb rc rS rT rR r+ rr r* r$ rx r r8 rq r} rw r r r r r , sr
=
r c @ s& e Zd ZdZejZdd� Zdd� ZdS )�CoordTransformz,The coordinate system transformation object.c C sB t |t�r
t |t�std��t�|j|j�| _|j| _|j| _ dS )z;Initialize on a source and target SpatialReference objects.z2source and target must be of type SpatialReferenceN)
r r r) r! �new_ct�_ptrr# rU �
_srs1_name�
_srs2_name)r, �sourcer5 r r r r1 Y s
zCoordTransform.__init__c C s d| j | jf S )NzTransform from "%s" to "%s")r� r� r9 r r r r: a s zCoordTransform.__str__N) r r r r� r! �
destroy_ctr� r1 r: r r r r r� U s
r� N)r� �ctypesr r r �enumr � django.contrib.gis.gdal.baser � django.contrib.gis.gdal.errorr � django.contrib.gis.gdal.libgdalr �"django.contrib.gis.gdal.prototypesr r! �django.utils.encodingr
r r r r� r r r r �<module> s +