Coverage for pygeodesy/__init__.py: 12%

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1 

2# -*- coding: utf-8 -*- 

3 

4u'''A pure Python implementation of geodesy tools for various ellipsoidal and spherical earth 

5models using precision trigonometric, vector-based, exact, elliptic, iterative and approximate 

6methods for geodetic (lat-/longitude), geocentric (U{ECEF<https://WikiPedia.org/wiki/ECEF>} 

7cartesian) and certain U{triaxial ellipsoidal<https://GeographicLib.SourceForge.io/1.44/triaxial.html>} 

8coordinates. 

9 

10Transcoded from U{JavaScript originals<https://GitHub.com/ChrisVeness/geodesy>} by I{Chris Veness 

11(C) 2005-2022} and from several U{C++ classes<https://GeographicLib.SourceForge.io/C++/doc/annotated.html>} 

12by I{Charles F.F. Karney (C) 2008-2023} and published under the same U{MIT License 

13<https://OpenSource.org/licenses/MIT>}**. 

14 

15There are four modules for ellipsoidal earth models, C{ellipsoidalExact}, C{-Karney}, 

16C{-Vincenty} and C{-Nvector} and two for spherical ones, C{sphericalTrigonometry} 

17and C{-Nvector}. Each module provides a geodetic B{C{LatLon}} and a geocentric 

18B{C{Cartesian}} class with methods and functions to compute distance, surface area, 

19perimeter, initial and final bearing, intermediate and nearest points, circle intersections 

20and secants, path intersections, U{3-point resections<https://WikiPedia.org/wiki/ 

21Position_resection_and_intersection>}, rhumb and rhumb lines, trilateration (by intersection, 

22by overlap and in 3d), conversions and unrolling, among other things. For more information 

23and further details see the U{documentation<https://mrJean1.GitHub.io/PyGeodesy>}, the 

24descriptions of U{Latitude/Longitude<https://www.Movable-Type.co.UK/scripts/latlong.html>}, 

25U{Vincenty<https://www.Movable-Type.co.UK/scripts/latlong-vincenty.html>} and 

26U{Vector-based<https://www.Movable-Type.co.UK/scripts/latlong-vectors.html>} geodesy, 

27the original U{JavaScript source<https://GitHub.com/ChrisVeness/geodesy>} or 

28U{docs<https://www.Movable-Type.co.UK/scripts/geodesy/docs>} and I{Karney}'s Python 

29U{geographiclib<https://PyPI.org/project/geographiclib>} and U{C++ GeographicLib 

30<https://GeographicLib.SourceForge.io/C++/doc/index.html>}. 

31 

32Also included are modules for conversions to and from U{Cassini-Soldner 

33<https://GeographicLib.SourceForge.io/C++/doc/classGeographicLib_1_1CassiniSoldner.html>}, 

34U{ECEF<https://WikiPedia.org/wiki/ECEF>} (Earth-Centered, Earth-Fixed cartesian), U{UTM 

35<https://www.Movable-Type.co.UK/scripts/latlong-utm-mgrs.html>} (Universal Transverse Mercator 

36and U{Exact<https://GeographicLib.SourceForge.io/C++/doc/classGeographicLib_1_1TransverseMercatorExact.html>}), 

37U{UPS<https://WikiPedia.org/wiki/Universal_polar_stereographic_coordinate_system>} (Universal Polar 

38Stereographic) and U{Web Mercator<https://WikiPedia.org/wiki/Web_Mercator>} (Pseudo-Mercator) coordinates, 

39U{MGRS<https://GeographicLib.SourceForge.io/C++/doc/classGeographicLib_1_1MGRS.html>} (Military Grid Reference 

40System, UTM I{and} UPS) and U{OSGR<https://www.Movable-Type.co.UK/scripts/latlong-os-gridref.html>} (British 

41Ordinance Survery Grid Reference) grid references, U{TRF<http://ITRF.ENSG.IGN.Fr>} (Terrestrial Reference 

42Frames) and modules to encode and decode U{EPSG<https://EPSG.org>}, U{Geohashes 

43<https://www.Movable-Type.co.UK/scripts/geohash.html>}, U{Georefs (WGRS) 

44<https://WikiPedia.org/wiki/World_Geographic_Reference_System>} and U{Garefs (GARS) 

45<https://WikiPedia.org/wiki/Global_Area_Reference_System>}. 

46 

47Other modules provide U{Albers equal-area<https://GeographicLib.SourceForge.io/ 

48html/classGeographicLib_1_1AlbersEqualArea.html>} projections, U{equidistant 

49<https://GeographicLib.SourceForge.io/C++/doc/classGeographicLib_1_1AzimuthalEquidistant.html>} 

50and other I{azimuthal} projections, Lambert I{conformal conic} projections and 

51positions, functions to clip paths or polygons of C{LatLon} points using the 

52U{Cohen-Sutherland<https://WikiPedia.org/wiki/Cohen-Sutherland_algorithm>}, 

53U{Forster-Hormann-Popa<https://www.ScienceDirect.com/science/article/pii/S259014861930007X>}, 

54U{Greiner-Hormann<http://www.inf.USI.CH/hormann/papers/Greiner.1998.ECO.pdf>}, 

55U{Liang-Barsky<https://www.CS.Helsinki.FI/group/goa/viewing/leikkaus/intro.html>} and 

56U{Sutherland-Hodgman<https://WikiPedia.org/wiki/Sutherland-Hodgman_algorithm>} methods, 

57functions to U{simplify<https://Bost.Ocks.org/mike/simplify>} or linearize a path of C{LatLon} 

58points (or a U{NumPy array<https://docs.SciPy.org/doc/numpy/reference/generated/numpy.array.html>}), 

59including implementations of the U{Ramer-Douglas-Peucker<https://WikiPedia.org/wiki/ 

60Ramer-Douglas-Peucker_algorithm>}, the U{Visvalingam-Whyatt<https://hydra.Hull.ac.UK/ 

61resources/hull:8338>} and the U{Reumann-Witkam<https://psimpl.SourceForge.net/reumann-witkam.html>} 

62algorithms and modified versions of the former. Other classes provide I{boolean} operations between 

63(composite) polygons or U{interpolate <https://docs.SciPy.org/doc/scipy/reference/interpolate.html>} 

64the L{height<pygeodesy.heights>} of C{LatLon} points and L{Geoid<pygeodesy.geoids>} models, compute 

65various U{Fréchet<https://WikiPedia.org/wiki/Frechet_distance>} or U{Hausdorff<https://WikiPedia.org/ 

66wiki/Hausdorff_distance>} distances. 

67 

68Installation 

69============ 

70 

71To install PyGeodesy, type C{python[3] -m pip install PyGeodesy} or C{python[3] -m easy_install 

72PyGeodesy} in a terminal or command window. 

73 

74If the wheel C{PyGeodesy-yy.m.d-py2.py3-none-any.whl} is missing in U{PyPI Download files<https:// 

75PyPI.org/project/PyGeodesy/#files>}, download the file from U{GitHub/dist<https://GitHub.com/mrJean1/ 

76PyGeodesy/tree/master/dist>}. Install that with C{python[3] -m pip install <path-to-downloaded-wheel>} 

77and verify with C{python[3] -m pygeodesy}. 

78 

79Alternatively, download C{PyGeodesy-yy.m.d.zip} from U{PyPI<https://PyPI.org/project/PyGeodesy>} 

80or U{GitHub<https://GitHub.com/mrJean1/PyGeodesy>}, C{unzip} the downloaded file, C{cd} to 

81directory C{Pygeodesy-yy.m.d} and type C{python[3] setup.py install}. 

82 

83To run all PyGeodesy tests, type C{python[3] test/run.py} or type C{python[3] test/unitTestSuite.py} 

84before or after installation. 

85 

86Dependencies 

87============ 

88 

89Installation of I{Karney}'s Python package U{geographiclib<https://PyPI.org/project/geographiclib>} 

90is optional, but required to use modules L{ellipsoidalKarney} and L{css}, L{azimuthal} classes 

91L{EquidistantKarney} and L{GnomonicKarney} and the L{HeightIDWkarney} interpolator. 

92 

93Both U{numpy<https://PyPI.org/project/numpy>} and U{scipy<https://PyPI.org/project/scipy>} must be 

94installed for most L{Geoid...<pygeodesy.geoids>} and L{Height...<pygeodesy.heights>} interpolators, 

95except L{GeoidKarney} and the L{HeightIDW...<pygeodesy.heights>} ones. 

96 

97Functions and C{LatLon} methods L{circin6}, L{circum3}, L{circum4_}, L{soddy4}, L{trilaterate3d2} and 

98C{trilaterate5} and modules L{auxilats} and L{rhumbaux} require U{numpy<https://PyPI.org/project/numpy>}. 

99 

100Modules L{ellipsoidalGeodSolve} and L{geodsolve} and L{azimuthal} classes L{EquidistantGeodSolve} 

101and L{GnomonicGeodSolve} depend on I{Karney}'s C++ utility U{GeodSolve 

102<https://GeographicLib.SourceForge.io/C++/doc/GeodSolve.1.html>} to be executable and set with 

103env variable C{PYGEODESY_GEODSOLVE} or with property L{Ellipsoid.geodsolve}. 

104 

105To compare C{MGRS} results from modules L{mgrs} and C{testMgrs} with I{Karney}'s C++ utility 

106U{GeoConvert<https://GeographicLib.SourceForge.io/C++/doc/GeoConvert.1.html>}, the latter must 

107be executable and set with env variable C{PYGEODESY_GEOCONVERT}. 

108 

109Module L{rhumbsolve} needs I{Karney}'s C++ utility U{RhumbSolve 

110<https://GeographicLib.SourceForge.io/C++/doc/RhumbSolve.1.html>} to be executable and set with 

111env variable C{PYGEODESY_RHUMBSOLVE} or with property L{Ellipsoid.rhumbsolve}. 

112 

113Documentation 

114============= 

115 

116In addition to the C{pygeodesy} package, the U{PyGeodesy<https://PyPI.org/project/PyGeodesy>} 

117U{distribution files<https://GitHub.com/mrJean1/PyGeodesy/tree/master/dist>} contain the tests, 

118the test results (on macOS only) and the complete U{documentation<https://mrJean1.GitHub.io/PyGeodesy>} 

119(generated by U{Epydoc<https://PyPI.org/project/epydoc>} using command line: 

120C{epydoc --html --no-private --no-source --name=PyGeodesy --url=... -v pygeodesy}). 

121 

122Tests 

123===== 

124 

125The tests ran with Python 3.11.4 (with U{geographiclib<https://PyPI.org/project/geographiclib>} 2.0, U{numpy 

126<https://PyPI.org/project/numpy>} 1.24.2 and U{scipy<https://PyPI.org/project/scipy>} 1.10.1), Python 3.10.8 

127(with U{geographiclib<https://PyPI.org/project/geographiclib>} 2.0, U{numpy<https://PyPI.org/project/numpy>} 

1281.23.3, U{scipy<https://PyPI.org/project/scipy>} 1.9.1, U{GeoConvert 

129<https://GeographicLib.SourceForge.io/html/utilities.html>} 2.2, U{GeodSolve 

130<https://GeographicLib.SourceForge.io/html/utilities.html>} 2.2 and U{RhumbSolve 

131<https://GeographicLib.SourceForge.io/html/utilities.html>} 2.2), Python 3.9.6, Python 3.8.10 (with 

132U{geographiclib<https://PyPI.org/project/geographiclib>} 1.52, U{numpy<https://PyPI.org/project/numpy>} 1.19.2 

133and U{scipy<https://PyPI.org/project/scipy>} 1.5.2) and Python 2.7.18 (with U{geographiclib 

134<https://PyPI.org/project/geographiclib>} 1.50, U{numpy<https://PyPI.org/project/numpy>} 1.16.6, U{scipy 

135<https://PyPI.org/project/scipy>} 1.2.2, U{GeoConvert<https://GeographicLib.SourceForge.io/html/utilities.html>} 

1362.2, U{GeodSolve<https://GeographicLib.SourceForge.io/html/utilities.html>} 2.2 and U{RhumbSolve 

137<https://GeographicLib.SourceForge.io/html/utilities.html>} 2.2), all on macOS 13.4.1 Ventura and in 64-bit only. 

138 

139All tests ran with and without C{lazy import} for Python 3 and with command line option C{-W default} and 

140env variable C{PYGEODESY_WARNINGS=on} for all Python versions. The results of those tests are included in 

141the distribution files. 

142 

143Test coverage has been measured with U{coverage<https://PyPI.org/project/coverage>} 7.2.2 using only Python 3.11.4 

144and 3.10.8. The complete coverage report in HTML and a PDF summary are included in the distribution files. 

145 

146Python 3.11.4, 3.10.8 and 3.9.6 ran on Apple M1 Silicon (C{arm64}), I{natively}. Python 3.8.10 and 2.7.18 ran 

147on Intel (C{x86_64}) or Intel I{emulation} ("C{arm64_x86_64}", see function L{pygeodesy.machine}). 

148 

149The tests also ran with Python 3.11.4 (and U{geographiclib<https://PyPI.org/project/geographiclib>} 2.0) on 

150U{Debian 11<https://Cirrus-CI.com/github/mrJean1/PyGeodesy/master>} in 64-bit only and with Python 3.11.4, 

1513.10.10 and 2.7.18 (all with U{geographiclib<https://PyPI.org/project/geographiclib>} 1.52) on U{Windows 10 

152<https://CI.AppVeyor.com/project/mrJean1/pygeodesy>} in 64- and/or 32-bit. 

153 

154A single-File and single-Directory application with C{pygeodesy} has been bundled using U{PyInstaller 

155<https://PyPI.org/project/pyinstaller>} 3.4 and 64-bit Python 3.7.3 on macOS 10.13.6 High Sierra. 

156 

157Previously, the tests were run with Python 3.11.2-3, 3.10.1-7, 3.9.1, 3.8.7, 3.7.1, 2.7.15, U{PyPy 

158<https://PyPy.org>}7.3.1 (Python 3.6.9) and U{PyPy<https://PyPy.org>} 7.1.1 (Python 2.7.13) (and U{geographiclib 

159<https://PyPI.org/project/geographiclib>} 1.52, U{numpy<https://PyPI.org/project/numpy>} 1.16.3, 1.16.4, 1.16.6, 

1601.19.0, 1.19.4, 1.19.5 or 1.22.4 and U{scipy<https://PyPI.org/project/scipy>} 1.2.1, 1.4.1, 1.5.2 or 1.8.1) on 

161U{Ubuntu 16.04<https://Travis-CI.com/mrJean1/PyGeodesy>}, with Python 3.10.0-1, 3.9.0-5, 3.8.0-6, 3.7.2-6, 3.7.0, 

1623.6.2-5, 3.5.3, 2.7.13-17, 2.7.10 and 2.6.9 (and U{numpy<https://PyPI.org/project/numpy>} 1.19.0, 1.16.5, 1.16.2, 

1631.15.2, 1.14.0, 1.13.1, 1.8.0rc1 or 1.6.2 and U{scipy<https://PyPI.org/project/scipy>} 1.5.0), U{PyPy 

164<https://PyPy.org>} 7.3.0 (Python 2.7.13 and 3.6.9), U{PyPy<https://PyPy.org>} 6.0.0 (Python 2.7.13 and 3.5.3) 

165and U{Intel-Python<https://software.Intel.com/en-us/distribution-for-python>} 3.5.3 (and U{numpy 

166<https://PyPI.org/project/numpy>} 1.11.3) on macOS 13.0-3 Ventura, 12.1-6 Monterey, 11.0-5.2-6.1 Big Sur (aka 

16710.16), 10.15.3, 10.15.5-7 Catalina, 10.14 Mojave, 10.13.6 High Sierra and 10.12 Sierra, MacOS X 10.11 El Capitan 

168and/or MacOS X 10.10 Yosemite, with U{Pythonista<https://OMZ-Software.com/pythonista>}3.2 (with geographiclib 

1691.50 or 1.49 and numpy 1.8.0) on iOS 14.4.2, 11.4.1, 12.0-3 on iPad4, iPhone6, iPhone10 and/or iPhone12, with 

170U{Pythonista<https://OMZ-Software.com/pythonista>} 3.1 on iOS 10.3.3, 11.0.3, 11.1.2 and 11.3 on iPad4, all in 

17164-bit only and with 32-bit Python 2.7.14 on Windows Server 2012R2, Windows 10 Pro and with 32-bit Python 2.6.6 

172on Windows XP SP3. 

173 

174Notes 

175===== 

176 

177All Python source code has been statically U{checked<https://GitHub.com/ActiveState/code/tree/master/recipes/ 

178Python/546532_PyChecker_postprocessor>} with U{PyChecker<https://PyPI.org/project/pychecker>}, U{PyFlakes 

179<https://PyPI.org/project/pyflakes>}, U{PyCodeStyle<https://PyPI.org/project/pycodestyle>} (formerly Pep8) and 

180U{McCabe<https://PyPI.org/project/mccabe>} using Python 2.7.18 and with U{Flake8<https://PyPI.org/project/flake8>} 

181using Python 3.11.4, both in 64-bit on macOS 13.4.1 Ventura. 

182 

183For a summary of all I{Karney}-based functionality in C{pygeodesy}, see module U{karney 

184<https://mrJean1.GitHub.io/PyGeodesy/docs/pygeodesy.karney-module.html>}. 

185 

186In Python 2, symbols L{S_DEG}, L{S_MIN}, L{S_SEC}, L{S_RAD} and L{S_SEP} may be multi-byte, non-ascii 

187characters and if so, I{not} C{unicode}. 

188 

189Env variables 

190============= 

191 

192The following environment variables are observed by C{PyGeodesy}: 

193 

194 - C{PYGEODESY_EXCEPTION_CHAINING} - see module L{pygeodesy.errors}. 

195 - C{PYGEODESY_FSUM_PARTIALS} - see module L{pygeodesy.fsums} and class L{pygeodesy.Fsum}. 

196 - C{PYGEODESY_FSUM_RESIDUAL} - see module L{pygeodesy.fsums} and class L{pygeodesy.Fsum}. 

197 - C{PYGEODESY_GEOCONVERT} - see module L{pygeodesy.mgrs}. 

198 - C{PYGEODESY_GEODSOLVE} - see module L{pygeodesy.geodsolve}. 

199 - C{PYGEODESY_LAZY_IMPORT} - see module L{pygeodesy.lazily} and variable L{pygeodesy.isLazy}. 

200 - C{PYGEODESY_NOTIMPLEMENTED} - __special__ methods return C{NotImplemented} if set to "std". 

201 - C{PYGEODESY_RHUMBSOLVE} - see module L{pygeodesy.rhumbsolve}. 

202 - C{PYGEODESY_UPS_POLES} - see modules L{pygeodesy.ups} and L{pygeodesy.mgrs}. 

203 

204and these to control standard or I{named} C{repr}esentations: 

205 

206 - C{PYGEODESY_BEARING_STD_REPR} - see method L{pygeodesy.Bearing}C{.__repr__}. 

207 - C{PYGEODESY_BOOL_STD_REPR} - see method L{pygeodesy.Bool}C{.__repr__}. 

208 - C{PYGEODESY_DEGREES_STD_REPR} - see method L{pygeodesy.Degrees}C{.__repr__}. 

209 - C{PYGEODESY_FLOAT_STD_REPR} - see method L{pygeodesy.Float}C{.__repr__}. 

210 - C{PYGEODESY_INT_STD_REPR} - see method L{pygeodesy.Int}C{.__repr__}. 

211 - C{PYGEODESY_METER_STD_REPR} - see method L{pygeodesy.Meter}C{.__repr__}. 

212 - C{PYGEODESY_RADIANS_STD_REPR} - see method L{pygeodesy.Radians}C{.__repr__}. 

213 - C{PYGEODESY_STR_STD_REPR} - see method L{pygeodesy.Str}C{.__repr__}. 

214 

215plus during development: 

216 

217 - C{PYGEODESY_FOR_DOCS} - for extended documentation by C{epydoc}. 

218 - C{PYGEODESY_GEOGRAPHICLIB} - see module L{pygeodesy.karney}. 

219 - C{PYGEODESY_WARNINGS} - see module L{pygeodesy.props} and function L{pygeodesy.DeprecationWarnings}. 

220 - C{PYGEODESY_XPACKAGES} - see module L{pygeodesy.basics}. 

221 - C{PYTHONDEVMODE} - see modules L{pygeodesy.errors} and L{pygeodesy.props}. 

222 

223and: 

224 

225 - C{PYGEODESY_INIT__ALL__} - Set env variable C{PYGEODESY_INIT__ALL__} to anything 

226 other than C{"__all__"} to avoid importing all C{pygeodesy} modules unnecessarily 

227 (in Python 2 or with C{PYGEODESY_LAZY_IMPORT} turned off in Python 3). However, 

228 to import a C{pygeodesy} item, the item name must be qualified with the C{module} 

229 name, for example C{ from pygeodesy.ellipsoidalExact import LatLon } 

230 

231License 

232======= 

233 

234**) U{Copyright (C) 2016-2023 -- mrJean1 at Gmail -- All Rights Reserved. 

235<https://OpenSource.org/licenses/MIT>} 

236 

237C{Permission is hereby granted, free of charge, to any person obtaining a 

238copy of this software and associated documentation files (the "Software"), 

239to deal in the Software without restriction, including without limitation 

240the rights to use, copy, modify, merge, publish, distribute, sublicense, 

241and/or sell copies of the Software, and to permit persons to whom the 

242Software is furnished to do so, subject to the following conditions:} 

243 

244C{The above copyright notice and this permission notice shall be included 

245in all copies or substantial portions of the Software.} 

246 

247C{THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 

248OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 

249FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 

250THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 

251OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 

252ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 

253OTHER DEALINGS IN THE SOFTWARE.} 

254 

255@newfield example: Example, Examples 

256 

257@var EPS: System's M{epsilon} ≈ 2.22044604925e-16 (C{float}). 

258@var EPS0: M{EPS**2} ≈ 4.9e-32 for near-zero comparison 

259@var EPS02: M{EPS**4} ≈ 2.4e-63 for near-zero squared comparison 

260@var EPS1: M{1 - EPS} ≈ 0.9999999999999998 (C{float}). 

261@var EPS2: M{EPS * 2} ≈ 4.440892098501e-16 (C{float}). 

262@var EPS_2: M{EPS / 2} ≈ 1.110223024625e-16 (C{float}). 

263@var EPS4: M{EPS * 4} ≈ 8.881784197001e-16 (C{float}). 

264 

265@var F_D: Format degrees as unsigned "deg°" with symbol, plus compass point suffix C{N, S, E} or C{W} (C{str}). 

266@var F_DM: Format degrees as unsigned "deg°min′" with symbols, plus suffix (C{str}). 

267@var F_DMS: Format degrees as unsigned "deg°min′sec″" with symbols, plus suffix (C{str}). 

268@var F_DEG: Format degrees as unsigned "[D]DD" I{without} symbol, plus suffix (C{str}). 

269@var F_MIN: Format degrees as unsigned "[D]DDMM" I{without} symbols, plus suffix (C{str}). 

270@var F_SEC: Format degrees as unsigned "[D]DDMMSS" I{without} symbols, plus suffix (C{str}). 

271@var F_D60: Format degrees as unsigned "[D]DD.MMSS" C{sexagecimal} I{without} symbols, plus suffix (C{str}). 

272@var F__E: Format degrees as unsigned "%E" I{without} symbols, plus suffix (C{str}). 

273@var F__F: Format degrees as unsigned "%F" I{without} symbols, plus suffix (C{str}). 

274@var F__G: Format degrees as unsigned "%G" I{without} symbols, plus suffix (C{str}). 

275@var F_RAD: Convert degrees to radians and format as unsigned "RR" with symbol, plus suffix (C{str}). 

276 

277@var F_D_: Format degrees as signed "-/deg°" with symbol, I{without} suffix (C{str}). 

278@var F_DM_: Format degrees as signed "-/deg°min′" with symbols, I{without} suffix (C{str}). 

279@var F_DMS_: Format degrees as signed "-/deg°min′sec″" with symbols, I{without} suffix (C{str}). 

280@var F_DEG_: Format degrees as signed "-/[D]DD" I{without} symbol, I{without} suffix (C{str}). 

281@var F_MIN_: Format degrees as signed "-/[D]DDMM" I{without} symbols, I{without} suffix (C{str}). 

282@var F_SEC_: Format degrees as signed "-/[D]DDMMSS" I{without} symbols, I{without} suffix (C{str}). 

283@var F_D60_: Format degrees as signed "-/[D]DD.MMSS" C{sexagecimal} I{without} symbols, I{without} suffix (C{str}). 

284@var F__E_: Format degrees as signed "-/%E" I{without} symbols, I{without} suffix (C{str}). 

285@var F__F_: Format degrees as signed "-/%F" I{without} symbols, I{without} suffix (C{str}). 

286@var F__G_: Format degrees as signed "-/%G" I{without} symbols, I{without} suffix (C{str}). 

287@var F_RAD_: Convert degrees to radians and format as signed "-/RR" I{without} symbol, I{without} suffix (C{str}). 

288 

289@var F_D__: Format degrees as signed "-/+deg°" with symbol, I{without} suffix (C{str}). 

290@var F_DM__: Format degrees as signed "-/+deg°min′" with symbols, I{without} suffix (C{str}). 

291@var F_DMS__: Format degrees as signed "-/+deg°min′sec″" with symbols, I{without} suffix (C{str}). 

292@var F_DEG__: Format degrees as signed "-/+[D]DD" I{without} symbol, I{without} suffix (C{str}). 

293@var F_MIN__: Format degrees as signed "-/+[D]DDMM" I{without} symbols, without suffix (C{str}). 

294@var F_SEC__: Format degrees as signed "-/+[D]DDMMSS" I{without} symbols, I{without} suffix (C{str}). 

295@var F_D60__: Format degrees as signed "-/+[D]DD.MMSS" C{sexagecimal} I{without} symbols, I{without} suffix (C{str}). 

296@var F__E__: Format degrees as signed "-/+%E" I{without} symbols, I{without} suffix (C{str}). 

297@var F__F__: Format degrees as signed "-/+%F" I{without} symbols, I{without} suffix (C{str}). 

298@var F__G__: Format degrees as signed "-/+%G" I{without} symbols, I{without} suffix (C{str}). 

299@var F_RAD__: Convert degrees to radians and format as signed "-/+RR" I{without} symbol, I{without} suffix (C{str}). 

300 

301@var DIG: System's M{float decimal digits} = 15 (C{int}). 

302@var INF: Infinity (C{float}), see functions L{pygeodesy.isinf} and L{pygeodesy.isfinite} and C{NINF}. 

303@var INT0: C{int(0)}, missing Z-components, C{if B{z}=B{INT0}}, see functions L{pygeodesy.isint0}, L{pygeodesy.meeus2} 

304@var MANT_DIG: System's M{float mantissa bits} = 53 (C{int}). 

305@var MAX: System's M{float max} ≈ 1.798e+308 (C{float}). 

306@var MIN: System's M{float min} ≈ 2.225e-308 (C{float}). 

307@var NAN: Not-A-Number (C{float}), see function L{pygeodesy.isnan}. 

308@var NEG0: Negative 0.0 (C{float}), see function L{pygeodesy.isneg0}. 

309@var NINF: Negative infinity (C{float}), see function L{pygeodesy.isninf} and C{INF}. 

310@var NN: Empty (C{str}), U{I{Nomen Nescio}<https://Wiktionary.org/wiki/N.N.>}. 

311 

312@var PI: Constant M{math.pi} (C{float}). 

313@var PI2: Two PI, M{PI * 2}, aka I{Tau} (C{float}). 

314@var PI_2: Half PI, M{PI / 2} (C{float}). 

315@var PI3: Three PI, M{PI * 3} (C{float}). 

316@var PI3_2: One and a half PI, M{PI * 3 / 2} (C{float}). 

317@var PI_3: One third PI, M{PI / 3} (C{float}). 

318@var PI4: Four PI, M{PI * 4} (C{float}). 

319@var PI_4: Quarter PI, M{PI / 4} (C{float}). 

320 

321@var R_MA: Equatorial earth radius (C{meter}), WGS84, EPSG:3785. 

322@var R_MB: Polar earth radius (C{meter}), WGS84, EPSG:3785. 

323@var R_M: Mean (spherical) earth radius (C{meter}). 

324@var R_KM: Mean (spherical) earth radius (C{Km}, kilometer). 

325@var R_NM: Mean (spherical) earth radius (C{NM}, nautical miles). 

326@var R_SM: Mean (spherical) earth radius (C{SM}, statute miles). 

327@var R_FM: Former FAI-Sphere earth radius (C{meter}). 

328@var R_GM: Average earth radius, distance to geoid surface (C{meter}) 

329@var R_QM: Earth' (triaxial) quadratic mean radius (C{meter}) 

330@var R_VM: Aviation/Navigation earth radius (C{meter}). 

331 

332@var S_DEG: Degrees symbol, default C{"°"} 

333@var S_MIN: Minutes symbol, default C{"′"} aka I{PRIME} 

334@var S_SEC: Seconds symbol, default C{"″"} aka I{DOUBLE_PRIME} 

335@var S_RAD: Radians symbol, default C{""} aka L{pygeodesy.NN} 

336@var S_DMS: If C{True} include, otherwise cancel all DMS symbols, default C{True}. 

337@var S_SEP: Separator between C{deg°|min′|sec″|suffix}, default C{""} aka L{pygeodesy.NN} 

338 

339@var Conics: Registered, predefined conics (C{enum-like}). 

340@var Datums: Registered, predefined datums (C{enum-like}). 

341@var Ellipsoids: Registered, predefined ellipsoids (C{enum-like}). 

342@var RefFrames: Registered, predefined reference frames (C{enum-like}). 

343@var Transforms: Registered, predefined transforms (C{enum-like}). 

344 

345@var isLazy: Lazy import setting (C{int} 0, 1, 2 or 3+) from C{env} variable C{PYGEODESY_LAZY_IMPORT}, or C{None} if C{lazy import} is not supported or not enabled, or C{False} if initializing C{lazy import} failed. 

346 

347@var pygeodesy_abspath: Fully qualified C{pygeodesy} directory name (C{str}). 

348 

349@var version: Normalized C{PyGeodesy} version (C{str}). 

350''' 

351 

352from os.path import abspath, basename, dirname 

353import sys 

354 

355_init__all__ = True 

356# <https://PyInstaller.ReadTheDocs.io/en/stable/runtime-information.html> 

357_isfrozen = getattr(sys, 'frozen', False) 

358pygeodesy_abspath = dirname(abspath(__file__)) # sys._MEIPASS + '/pygeodesy' 

359_pygeodesy_ = __package__ or basename(pygeodesy_abspath) 

360 

361if _isfrozen: # avoid lazy import 

362 _lazy_import2 = None 

363else: 

364 # setting __path__ should ... 

365 __path__ = [pygeodesy_abspath] 

366 try: # ... make this import work, ... 

367 import pygeodesy.lazily as _ 

368 except ImportError: # ... if it doesn't, extend 

369 # sys.path to include this very directory such 

370 # that all public and private sub-modules can 

371 # be imported (and checked by PyChecker, etc.) 

372 sys.path.insert(0, pygeodesy_abspath) # XXX __path__[0] 

373 

374 try: # lazily requires Python 3.7+, see lazily.__doc__ 

375 from pygeodesy.lazily import _a_l_l_, _getenv, LazyImportError, \ 

376 _lazy_import2 # PYCHOK expected 

377 _, __getattr__ = _lazy_import2(_pygeodesy_) # PYCHOK expected 

378 _init__all__ = _getenv('PYGEODESY_INIT__ALL__', _a_l_l_) == _a_l_l_ 

379 del _a_l_l_, _getenv 

380 

381 except (ImportError, LazyImportError, NotImplementedError): 

382 _lazy_import2 = None 

383 

384if _init__all__ and not _lazy_import2: # import and set __all__ 

385 

386 # import all public modules and export as such 

387 import pygeodesy.albers as albers # PYCHOK exported 

388 import pygeodesy.auxilats as auxilats # PYCHOK exported 

389 import pygeodesy.azimuthal as azimuthal # PYCHOK exported 

390 import pygeodesy.deprecated.bases as bases # PYCHOK DEPRECATED 

391 import pygeodesy.basics as basics # PYCHOK exported 

392 import pygeodesy.booleans as booleans # PYCHOK exported 

393 import pygeodesy.cartesianBase as cartesianBase # PYCHOK exported 

394 import pygeodesy.clipy as clipy # PYCHOK exported 

395 import pygeodesy.constants as constants # PYCHOK exported 

396 import pygeodesy.css as css # PYCHOK exported 

397 import pygeodesy.deprecated.datum as datum # PYCHOK DEPRECATED 

398 import pygeodesy.datums as datums # PYCHOK exported 

399 import pygeodesy.deprecated as deprecated # PYCHOK exported 

400 import pygeodesy.dms as dms # PYCHOK exported 

401 import pygeodesy.ecef as ecef # PYCHOK exported 

402 import pygeodesy.elevations as elevations # PYCHOK exported 

403 import pygeodesy.ellipsoidalBase as ellipsoidalBase # PYCHOK exported 

404 import pygeodesy.ellipsoidalBaseDI as ellipsoidalBaseDI # PYCHOK exported 

405 import pygeodesy.ellipsoidalExact as ellipsoidalExact # PYCHOK exported 

406 import pygeodesy.ellipsoidalGeodSolve as ellipsoidalGeodSolve # PYCHOK exported 

407 import pygeodesy.ellipsoidalKarney as ellipsoidalKarney # PYCHOK exported 

408 import pygeodesy.ellipsoidalNvector as ellipsoidalNvector # PYCHOK exported 

409 import pygeodesy.ellipsoidalVincenty as ellipsoidalVincenty # PYCHOK exported 

410 import pygeodesy.ellipsoids as ellipsoids # PYCHOK exported 

411 import pygeodesy.elliptic as elliptic # PYCHOK exported 

412 import pygeodesy.epsg as epsg # PYCHOK exported 

413 import pygeodesy.etm as etm # PYCHOK exported 

414 import pygeodesy.errors as errors # PYCHOK exported 

415 import pygeodesy.fmath as fmath # PYCHOK exported 

416 import pygeodesy.formy as formy # PYCHOK exported 

417 import pygeodesy.frechet as frechet # PYCHOK exported 

418 import pygeodesy.fstats as fstats # PYCHOK exported 

419 import pygeodesy.fsums as fsums # PYCHOK exported 

420 import pygeodesy.gars as gars # PYCHOK exported 

421 import pygeodesy.geodesicw as geodesicw # PYCHOK exported 

422 import pygeodesy.geodesicx as geodesicx # PYCHOK exported 

423 import pygeodesy.geodsolve as geodsolve # PYCHOK exported 

424 import pygeodesy.geohash as geohash # PYCHOK exported 

425 import pygeodesy.geoids as geoids # PYCHOK exported 

426 import pygeodesy.hausdorff as hausdorff # PYCHOK exported 

427 import pygeodesy.heights as heights # PYCHOK exported 

428 import pygeodesy.interns as interns # PYCHOK exported 

429 import pygeodesy.iters as iters # PYCHOK exported 

430 import pygeodesy.karney as karney # PYCHOK exported 

431 import pygeodesy.ktm as ktm # PYCHOK exported 

432 import pygeodesy.latlonBase as latlonBase # PYCHOK exported 

433 import pygeodesy.lazily as lazily # PYCHOK exported 

434 import pygeodesy.lcc as lcc # PYCHOK exported 

435 import pygeodesy.ltp as ltp # PYCHOK exported 

436 import pygeodesy.ltpTuples as ltpTuples # PYCHOK exported 

437 import pygeodesy.mgrs as mgrs # PYCHOK exported 

438 import pygeodesy.named as named # PYCHOK exported 

439 import pygeodesy.namedTuples as namedTuples # PYCHOK exported 

440 import pygeodesy.nvectorBase as nvectorBase # PYCHOK exported 

441 import pygeodesy.deprecated.nvector as nvector # PYCHOK DEPRECATED 

442 import pygeodesy.osgr as osgr # PYCHOK exported 

443 import pygeodesy.points as points # PYCHOK exported 

444 import pygeodesy.props as props # PYCHOK exported 

445 import pygeodesy.resections as resections # PYCHOK exported 

446 import pygeodesy.rhumbaux as rhumbaux # PYCHOK exported 

447 import pygeodesy.rhumbBase as rhumbBase # PYCHOK exported 

448 import pygeodesy.rhumbsolve as rhumbsolve # PYCHOK exported 

449 import pygeodesy.rhumbx as rhumbx # PYCHOK exported 

450 import pygeodesy.simplify as simplify # PYCHOK exported 

451 import pygeodesy.sphericalBase as sphericalBase # PYCHOK exported 

452 import pygeodesy.sphericalNvector as sphericalNvector # PYCHOK exported 

453 import pygeodesy.sphericalTrigonometry as sphericalTrigonometry # PYCHOK exported 

454 import pygeodesy.solveBase as solveBase # PYCHOK exported 

455 import pygeodesy.streprs as streprs # PYCHOK exported 

456 import pygeodesy.trf as trf # PYCHOK exported 

457 import pygeodesy.triaxials as triaxials # PYCHOK exported 

458 import pygeodesy.units as units # PYCHOK exported 

459 import pygeodesy.unitsBase as unitsBase # PYCHOK exported 

460 import pygeodesy.ups as ups # PYCHOK exported 

461 import pygeodesy.utily as utily # PYCHOK exported 

462 import pygeodesy.utm as utm # PYCHOK exported 

463 import pygeodesy.utmups as utmups # PYCHOK exported 

464 import pygeodesy.utmupsBase as utmupsBase # PYCHOK exported 

465 import pygeodesy.vector2d as vector2d # PYCHOK exported 

466 import pygeodesy.vector3d as vector3d # PYCHOK exported 

467 import pygeodesy.vector3dBase as vector3dBase # PYCHOK exported 

468 import pygeodesy.webmercator as webmercator # PYCHOK exported 

469 import pygeodesy.wgrs as wgrs # PYCHOK exported 

470 

471 # lift all public classes, constants, functions, etc. but ONLY 

472 # from the following modules ... (see also David Beazley's 

473 # talk <https://DaBeaz.com/modulepackage/index.html>) ... BUT 

474 # NOT modules ellipsoidal*, epsg, gars, geohash, spherical*, 

475 # vector and wgrs ... in order keep those as modules ONLY 

476 from pygeodesy.albers import * # PYCHOK __all__ 

477 from pygeodesy.azimuthal import * # PYCHOK __all__ 

478# from pygeodesy.auxilats import * # PYCHOK __(_)__ 

479 from pygeodesy.basics import * # PYCHOK __all__ 

480 from pygeodesy.booleans import * # PYCHOK __all__ 

481# from pygeodesy.cartesianBase import * # PYCHOK __(_)__ 

482 from pygeodesy.clipy import * # PYCHOK __all__ 

483 from pygeodesy.constants import * # PYCHOK __all__ 

484 from pygeodesy.css import * # PYCHOK __all__ 

485 from pygeodesy.datums import * # PYCHOK __all__ 

486 from pygeodesy.deprecated import * # PYCHOK __all__ 

487 from pygeodesy.dms import * # PYCHOK __all__ 

488 from pygeodesy.ecef import * # PYCHOK __all__ 

489 from pygeodesy.elevations import * # PYCHOK __all__ 

490# from pygeodesy.ellipsoidalBase import * # PYCHOK __(_)__ 

491# from pygeodesy.ellipsoidalBaseDI import * # PYCHOK __(_)__ 

492# from pygeodesy.ellipsoidalExact import * # PYCHOK __(_)__ 

493# from pygeodesy.ellipsoidalGeodSolve import * # PYCHOK __(_)__ 

494# from pygeodesy.ellipsoidalKarney import * # PYCHOK __(_)__ 

495# from pygeodesy.ellipsoidalNvector import * # PYCHOK __(_)__ 

496 from pygeodesy.ellipsoidalVincenty import VincentyError # PYCHOK lazily 

497 from pygeodesy.ellipsoids import * # PYCHOK __all__ 

498 from pygeodesy.elliptic import * # PYCHOK __all__ 

499 from pygeodesy.epsg import Epsg, EPSGError # PYCHOK lazily 

500 from pygeodesy.etm import * # PYCHOK __all__ 

501 from pygeodesy.errors import * # PYCHOK __all__ 

502 from pygeodesy.fmath import * # PYCHOK __all__ 

503 from pygeodesy.formy import * # PYCHOK __all__ 

504 from pygeodesy.frechet import * # PYCHOK __all__ 

505 from pygeodesy.fstats import * # PYCHOK __all__ 

506 from pygeodesy.fsums import * # PYCHOK __all__ 

507 from pygeodesy.gars import Garef, GARSError # PYCHOK lazily 

508 from pygeodesy.geodesicw import * # PYCHOK __all__ 

509 from pygeodesy.geodesicx import * # PYCHOK __all__ 

510 from pygeodesy.geodsolve import * # PYCHOK __all__ 

511 from pygeodesy.geohash import Geohash, GeohashError, \ 

512 Neighbors8Dict, Resolutions2Tuple # PYCHOK lazily 

513 from pygeodesy.geoids import * # PYCHOK __all__ 

514 from pygeodesy.hausdorff import * # PYCHOK __all__ 

515 from pygeodesy.heights import * # PYCHOK __all__ 

516 from pygeodesy.interns import * # PYCHOK __all__ 

517 from pygeodesy.iters import * # PYCHOK __all__ 

518 from pygeodesy.karney import * # PYCHOK __all__ 

519 from pygeodesy.ktm import * # PYCHOK __all__ 

520# from pygeodesy.latlonBase import * # PYCHOK __(_)__ 

521 from pygeodesy.lazily import * # PYCHOK __all__ 

522 from pygeodesy.lcc import * # PYCHOK __all__ 

523 from pygeodesy.ltp import * # PYCHOK __all__ 

524 from pygeodesy.ltpTuples import * # PYCHOK __all__ 

525 from pygeodesy.mgrs import * # PYCHOK __all__ 

526 from pygeodesy.named import * # PYCHOK __all__ 

527 from pygeodesy.namedTuples import * # PYCHOK __all__ 

528# from pygeodesy.nvectorBase import * # PYCHOK __(_)__ 

529 from pygeodesy.osgr import * # PYCHOK __all__ 

530 from pygeodesy.points import * # PYCHOK __all__ 

531 from pygeodesy.props import * # PYCHOK __all__ 

532 from pygeodesy.resections import * # PYCHOK __all__ 

533 from pygeodesy.rhumbaux import * # PYCHOK __all__ 

534# from pygeodesy.rhumbBase import * # PYCHOK __(_)__ 

535 from pygeodesy.rhumbsolve import * # PYCHOK __all__ 

536 from pygeodesy.rhumbx import * # PYCHOK __all__ 

537 from pygeodesy.simplify import * # PYCHOK __all__ 

538# from pygeodesy.sphericalBase import * # PYCHOK __(_)__ 

539# from pygeodesy.sphericalNvector import * # PYCHOK __(_)__ 

540# from pygeodesy.sphericalTrigonometry import * # PYCHOK __(_)__ 

541# from pygeodesy.solveBase import * # PYCHOK __(_)__ 

542 from pygeodesy.streprs import * # PYCHOK __all__ 

543 from pygeodesy.trf import * # PYCHOK __all__ 

544 from pygeodesy.triaxials import * # PYCHOK __all__ 

545 from pygeodesy.units import * # PYCHOK __all__ 

546 from pygeodesy.unitsBase import * # PYCHOK __all__ 

547 from pygeodesy.ups import * # PYCHOK __all__ 

548 from pygeodesy.utily import * # PYCHOK __all__ 

549 from pygeodesy.utm import * # PYCHOK __all__ 

550 from pygeodesy.utmups import * # PYCHOK __all__ 

551# from pygeodesy.utmupsBase import * # PYCHOK __(_)__ 

552 from pygeodesy.vector2d import * # PYCHOK __all__ 

553 from pygeodesy.vector3d import * # PYCHOK __all__ 

554# from pygeodesy.vector3dBase import * # PYCHOK __(_)__ 

555 from pygeodesy.webmercator import * # PYCHOK __all__ 

556 from pygeodesy.wgrs import Georef, WGRSError # PYCHOK lazily 

557 

558 def _all(globalocals): 

559 from pygeodesy.interns import NN as _NN, _attribute_, _COMMASPACE_, \ 

560 _DOT_, _module_, _s_ # PYCHOK expected 

561 from pygeodesy.streprs import Fmt as _Fmt # PYCHOK expected 

562 # collect all public module and attribute names and check 

563 # that modules are imported from this package, 'pygeodesy' 

564 # (but the latter only when not bundled with PyInstaller or 

565 # Py2Exe, since the file-layout is different. Courtesy of 

566 # GilderGeek<https://GitHub.com/mrJean1/PyGeodesy/issues/31>) 

567 ns = list(lazily._ALL_INIT) 

568# XXX ps = () if _isfrozen else set([_pygeodesy_] + __name__.split(_DOT_)) 

569 for mod, attrs in lazily._ALL_LAZY.enums(): 

570 if mod not in globalocals: 

571 t = _DOT_(_pygeodesy_, mod) 

572 raise ImportError('missing %s%s: %s' % (_module_, _NN, t)) 

573 ns.append(mod) 

574 # check that all other public attributes do exist 

575 if attrs and isinstance(attrs, tuple): 

576 t = tuple(a for a in attrs if a not in globalocals) 

577 if t: 

578 s = _Fmt.SQUARE(_s_, len(t)) if len(t) > 1 else _NN 

579 t = _COMMASPACE_.join(_DOT_(_pygeodesy_, mod, a) for a in t) 

580 raise ImportError('missing %s%s: %s' % (_attribute_, s, t)) 

581 ns.extend(attrs) 

582# XXX if ps: # check that mod is a _pygeodesy_ module 

583# XXX m = globalocals[mod] # assert(m.__name__ == mod) 

584# XXX f = getattr(m, '__file__', _NN) 

585# XXX d = dirname(abspath(f)) if f else pygeodesy_abspath 

586# XXX p = getattr(m, '__package__', _NN) or _pygeodesy_ 

587# XXX if p not in ps or d != pygeodesy_abspath: 

588# XXX raise ImportError('foreign module: %s from %r' % (_DOT_(p, mod), f or p)) 

589 return tuple(set(ns)) # remove duplicates 

590 

591 __all__ = _all(globals()) # or locals() 

592else: 

593 __all__ = () 

594 _init__all__ = False 

595 

596from pygeodesy.interns import _DOT_ # PYCHOK import 

597__version__ = '23.08.12' 

598# see setup.py for similar logic 

599version = _DOT_.join(map(str, map(int, __version__.split(_DOT_)))) 

600 

601# XXX del ellipsoidalBase, ellipsoidalBaseDI, sphericalBase, utmupsBase # PYCHOK expected 

602del abspath, basename, dirname, _DOT_, _lazy_import2, sys 

603 

604# **) MIT License 

605# 

606# Copyright (C) 2016-2023 -- mrJean1 at Gmail -- All Rights Reserved. 

607# 

608# Permission is hereby granted, free of charge, to any person obtaining a 

609# copy of this software and associated documentation files (the "Software"), 

610# to deal in the Software without restriction, including without limitation 

611# the rights to use, copy, modify, merge, publish, distribute, sublicense, 

612# and/or sell copies of the Software, and to permit persons to whom the 

613# Software is furnished to do so, subject to the following conditions: 

614# 

615# The above copyright notice and this permission notice shall be included 

616# in all copies or substantial portions of the Software. 

617# 

618# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 

619# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 

620# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 

621# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 

622# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 

623# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 

624# OTHER DEALINGS IN THE SOFTWARE.