# Coverage for pygeodesy/epsg.py : 96%

## 92 statements 88 run 4 missing 5 excluded

Hot-keys on this page

r m x p toggle line displays

j k next/prev highlighted chunk

0 (zero) top of page

1 (one) first highlighted chunk

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 | # -*- coding: utf-8 -*- u'''Classes L{Epsg} and L{EPSGError} and functions to L{encode} and L{decode2} European Petroleum Survey Group (U{EPSG<https://www.EPSG-Registry.org>}) codes from and to U{UTM <https://WikiPedia.org/wiki/Universal_Transverse_Mercator_coordinate_system>} and U{UPS<https://WikiPedia.org/wiki/Universal_polar_stereographic_coordinate_system>} zones. A pure Python implementation transcribed from I{Charles Karney's} C++ class U{UTMUPS<https://GeographicLib.SourceForge.io/html/classGeographicLib_1_1UTMUPS.html>}, including coverage of UPS as zone C{0}. ''' from pygeodesy.lazily import _ALL_LAZY from pygeodesy.named import _NamedInt, UtmUps2Tuple from pygeodesy.ups import Ups from pygeodesy.utily import property_RO, _Strs, _TypeError from pygeodesy.utm import Utm from pygeodesy.utmupsBase import _to3zBhp, _UPS_ZONE, \ _UTM_ZONE_MIN, _UTM_ZONE_MAX, \ _UTMUPS_ZONE_INVALID # all public contants, classes and functions __all__ = _ALL_LAZY.epsg + ('decode2', 'encode') __version__ = '19.10.31' # _EPSG_INVALID = _UTMUPS_ZONE_INVALID _EPSG_N_01 = 32601 # EPSG code for UTM zone 01 N _EPSG_N_60 = 32660 # EPSG code for UTM zone 60 N _EPSG_N = 32661 # EPSG code for UPS pole N _EPSG_S_01 = 32701 # EPSG code for UTM zone 01 S _EPSG_S_60 = 32760 # EPSG code for UTM zone 60 S _EPSG_S = 32761 # EPSG code for UPS pole S class EPSGError(ValueError): '''European Petroleum Survey Group (EPSG) encode, decode or other L{Epsg} issue. ''' pass class Epsg(_NamedInt): '''U{EPSG<https://www.EPSG-Registry.org>} class, a C{_NamedInt}. ''' _band = '' _epsg = None _hemisphere = '' _utmups = None _zone = _UTMUPS_ZONE_INVALID def __new__(cls, eisu): '''New L{Epsg} European Petroleum Survey Group (EPSG) code from a UTM/USP coordinate or other EPSG code. @param eisu: Other (L{Epsg}, C{int}, C{str}, L{Utm} or L{Ups}). @return: New L{Epsg}. @raise TypeError: Invalid B{C{eisu}}. @raise EPSGError: Invalid B{C{eisu}}. ''' if isinstance(eisu, Epsg): self = int.__new__(cls, int(eisu)) self._band = eisu.band self._epsg = self # XXX eisu self._hemisphere = eisu.hemisphere self._utmups = eisu.utmups self._zone = eisu.zone if eisu.name: self.name = eisu.name elif isinstance(eisu, int): self = int.__new__(cls, eisu) self._epsg = eisu self._zone, self._hemisphere = decode2(eisu) # PYCHOK UtmUps2Tuple elif isinstance(eisu, _Strs): self = encode(eisu) else: u = eisu _TypeError(Utm, Ups, eisu=u) self = encode(u.zone, hemipole=u.hemisphere, band=u.band) # PYCHOK **kwds self._utmups = u if u.name: self.name = u.name return self def __repr__(self): return '%s(%s)' % (self.named, int.__repr__(self)) def __str__(self): return int.__str__(self) @property_RO def band(self): '''Get the UTM/UPS Band (C{'A'|'B'|'C'|'D'..'W'|'X'|'Y'|'Z'} or C{""}). ''' return self._band @property_RO def hemisphere(self): '''Get the UTM/UPS hemisphere (C{'N'|'S'}). ''' return self._hemisphere @property_RO def utmups(self): '''Get the UTM/TMP original (L{Utm}, L{Ups}). ''' return self._utmups def utmupsStr(self, B=False): '''Get the UTM/TMP zone, band and hemisphere (C{str}). ''' z = '%02d' % (self.zone,) b = self.band if B else '' h = s = self.hemisphere if h: s = ' ' return ''.join(map(str, (z, b, s, h))) @property_RO def zone(self): '''Get the UTM/UPS zone (C{int}, C{1..60} for UTM, C{0} for UPS). ''' return self._zone def decode2(epsg): '''Determine the UTM/USP zone and hemisphere from a given U{EPSG<https://www.EPSG-Registry.org>}. @param epsg: The EPSG (L{Epsg}, C{str} or C{scalar}). @return: A L{UtmUps2Tuple}C{(zone, hemipole)}. @raise EPSGError: Invalid B{C{epsg}}. @note: Coverage of UPS as zone C{0} follows Karney's function U{UTMUPS::DecodeEPSG <https://GeographicLib.SourceForge.io/html/classGeographicLib_1_1UTMUPS.html>}. ''' if isinstance(epsg, Epsg): z, h = epsg.zone, epsg.hemisphere else: try: e = int(epsg) if _EPSG_N_01 <= e <= _EPSG_N_60: z, h = (e - _EPSG_N_01 + _UTM_ZONE_MIN), 'N' elif _EPSG_S_01 <= e <= _EPSG_S_60: z, h = (e - _EPSG_S_01 + _UTM_ZONE_MIN), 'S' elif e == _EPSG_N: z, h = _UPS_ZONE, 'N' elif e == _EPSG_S: z, h = _UPS_ZONE, 'S' else: raise ValueError except (TypeError, ValueError): raise EPSGError('%s invalid: %r' % ('epsg', epsg)) return UtmUps2Tuple(z, h) def encode(zone, hemipole='', band=''): '''Determine the U{EPSG<https://www.EPSG-Registry.org>} code for a given UTM/UPS zone number, hemisphere/pole and/or Band. @param zone: The (longitudinal) UTM zone (C{int}, 1..60) or UPS zone (C{int}, 0) or UTM zone with/-out (latitudinal) Band letter (C{str}, '01C'..'60X') or UPS zone with/-out (polar) Band letter (C{str}, '00A', '00B', '00Y' or '00Z'). @keyword hemipole: UTM/UPS hemisphere or UPS projection top/center pole (C{str}, C{'N[orth]'} or C{'S[outh]'}). @keyword band: Optional (latitudinal) UTM or (polar) UPS Band letter (C{str}). @return: C{EPSG} code (L{Epsg}). @raise EPSGError: Invalid B{C{zone}}, B{C{hemipole}} or B{C{band}}. @note: Coverage of UPS as zone C{0} follows Karney's function U{UTMUPS::EncodeEPSG <https://GeographicLib.SourceForge.io/html/classGeographicLib_1_1UTMUPS.html>}. ''' try: z, B, hp = _to3zBhp(zone, band, hemipole=hemipole) # in .ellipsoidalBase if hp not in ('N', 'S'): raise ValueError except ValueError: raise EPSGError('%s, %s or %s invalid: %r' % ('zone', 'hemipole', 'band', (zone, hemipole, band))) if _UTM_ZONE_MIN <= z <= _UTM_ZONE_MAX: e = z - _UTM_ZONE_MIN + (_EPSG_N_01 if hp == 'N' else _EPSG_S_01) elif z == _UPS_ZONE: e = _EPSG_N if hp == 'N' else _EPSG_S else: raise EPSGError('%s invalid: %r' % ('zone', zone)) e = Epsg(e) e._band = B # e._hemisphere = hp return e # **) MIT License # # Copyright (C) 2016-2020 -- mrJean1 at Gmail -- All Rights Reserved. # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR # OTHER DEALINGS IN THE SOFTWARE.