^Q\-@sdZddlmZmZmZddlmZddlmZddl m Z ddl m Z ddlmZmZGdd d eZGd d d eZd S) ah 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 )byrefc_char_pc_int)GDALBase) SRSException)srs)six) force_bytes force_textc@sDeZdZdZejZddddZddZdd Z d d d Z d dZ ddZ ddZ ddZddZddZddZeddZeddZedd Zed!d"Zed#d$Zed%d&Zed'd(Zed)d*Zed+d,Zed-d.Zed/d0Zed1d2Zed3d4Zed5d6Z d7d8Z!d9d:Z"d;d<Z#d=d>Z$d?d@Z%edAdBZ&ed dCdDZ'edEdFZ(edGdHZ)eddIdJZ*dKS)LSpatialReferencez 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." userc CsS|dkr5tjtd|_|j|dSt|tjryyt|}d|}Wqt k ruYqXnLt|tj rd}n1t||j r|}d}nt d||dkr|}ntd}tj|}|st d|n ||_|d kr3|j|n|dkrO|j|ndS) a' Creates 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.4 string, and/or a projection "well known" shorthand string (one of 'WGS84', 'WGS72', 'NAD27', 'NAD83'). wktNzEPSG:%depsgZogrzInvalid SRS type "%s"z+Could not create spatial reference from: %sr )capiZnew_srsrptr import_wkt isinstancer string_typesint ValueError integer_typesZptr_type TypeErrorrimport_user_input import_epsg)selfZ srs_inputZsrs_typesridrbufrA/var/www/dbchiro/venv/build/Django/django/contrib/gis/gdal/srs.py__init__.s6            zSpatialReference.__init__cCs-t|tr|j|S|j|SdS)a Returns 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 N)rtuple attr_value)rtargetrrr __getitem___s zSpatialReference.__getitem__cCs|jS)z,The string representation uses 'pretty' WKT.) pretty_wkt)rrrr __str__{szSpatialReference.__str__rcCsHt|tj s#t|t r,tntj|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. ) rrrrrrZget_attr_valuerr )rr$indexrrr r#s# zSpatialReference.attr_valuecCstj|jt|S)zReturns the SRID of top-level authority, or None if undefined.Z AUTHORITYN)rr#rr)rrrr rszSpatialReference.sridcCs(tj|jtt\}}|S)z%Returns the name of the linear units.)r linear_unitsrrr)runitsr3rrr linear_names$zSpatialReference.linear_namecCs(tj|jtt\}}|S)z&Returns the value of the linear units.)rr5rrr)rr6r3rrr r5s$zSpatialReference.linear_unitscCs(tj|jtt\}}|S)z&Returns the name of the angular units.)r angular_unitsrrr)rr6r3rrr angular_names$zSpatialReference.angular_namecCs(tj|jtt\}}|S)z'Returns the value of the angular units.)rr8rrr)rr6r3rrr r8s$zSpatialReference.angular_unitscCsd\}}|js|jrEtj|jtt\}}n0|jrutj|jtt\}}n|dk rt |}n||fS)z Returns a 2-tuple of the units value and the units name, and will automatically determines whether to return the linear or angular units. N)NN) r0r2rr5rrrr1r8r )rr6r3rrr r6s ' ' zSpatialReference.unitscCs|j|j|jfS)z Returns a tuple of the ellipsoid parameters: (semimajor axis, semiminor axis, and inverse flattening) ) semi_major semi_minorinverse_flattening)rrrr ellipsoidszSpatialReference.ellipsoidcCstj|jttS)z7Returns the Semi Major Axis for this Spatial Reference.)rr:rrr)rrrr r:szSpatialReference.semi_majorcCstj|jttS)z7Returns the Semi Minor Axis for this Spatial Reference.)rr;rrr)rrrr r;szSpatialReference.semi_minorcCstj|jttS)z:Returns the Inverse Flattening for this Spatial Reference.)rZ invflatteningrrr)rrrr r<sz#SpatialReference.inverse_flatteningcCsttj|jS)ze Returns True if this SpatialReference is geographic (root node is GEOGCS). )boolrZ isgeographicr)rrrr r1szSpatialReference.geographiccCsttj|jS)zGReturns True if this SpatialReference is local (root node is LOCAL_CS).)r>rZislocalr)rrrr r2szSpatialReference.localcCsttj|jS)zx Returns True if this SpatialReference is a projected coordinate system (root node is PROJCS). )r>rZ isprojectedr)rrrr r0 szSpatialReference.projectedcCstj|j|dS)z>Imports the Spatial Reference from the EPSG code (an integer).N)rZ from_epsgr)rrrrr rszSpatialReference.import_epsgcCstj|j|dS)z3Imports the Spatial Reference from a PROJ.4 string.N)rZ from_projr)rprojrrr import_projszSpatialReference.import_projcCstj|jt|dS)z?Imports the Spatial Reference from the given user input string.N)rZfrom_user_inputrr )rZ user_inputrrr rsz"SpatialReference.import_user_inputcCs)tj|jttt|dS)z3Imports the Spatial Reference from OGC WKT (string)N)rZfrom_wktrrrr )rrrrr r!szSpatialReference.import_wktcCstj|j|dS)z1Imports the Spatial Reference from an XML string.N)rZfrom_xmlr)rxmlrrr import_xml%szSpatialReference.import_xmlcCstj|jttS)z9Returns the WKT representation of this Spatial Reference.)rZto_wktrrr)rrrr r*szSpatialReference.wktcCstj|jtt|S)z/Returns the 'pretty' representation of the WKT.)rZ to_pretty_wktrrr)rZsimplifyrrr r&/szSpatialReference.pretty_wktcCstj|jttS)z=Returns the PROJ.4 representation for this Spatial Reference.)rZto_projrrr)rrrr r?4szSpatialReference.projcCs|jS)zAlias for proj().)r?)rrrr proj49szSpatialReference.proj4cCs%tj|jttt|S)z9Returns the XML representation of this Spatial Reference.)rZto_xmlrrrr )rdialectrrr rA>szSpatialReference.xmlN)+__name__ __module__ __qualname____doc__rZ release_srs destructorr!r%r'r#r)r*r+r,r-r.r/propertyr3rr7r5r9r8r6r=r:r;r<r1r2r0rr@rrrBrr&r?rCrArrrr r &sN  1                r c@s7eZdZdZejZddZddZdS)CoordTransformz,The coordinate system transformation object.cCsft|t s t|t r/tdntj|j|j|_|j|_|j|_ dS)zs