# Coverage for pygeodesy/mgrs.py : 99%

## 264 statements 262 run 2 missing 52 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 | # -*- coding: utf-8 -*- u'''Military Grid Reference System (MGRS/NATO) references. Classes L{Mgrs}, L{Mgrs4Tuple} and L{Mgrs6Tuple} and functions L{parseMGRS} and L{toMgrs}. Pure Python implementation of MGRS, UTM and UPS conversions covering the entire I{ellipsoidal} earth, transcoded from I{Chris Veness}' JavaScript originals U{MGRS <https://www.Movable-Type.co.UK/scripts/latlong-utm-mgrs.html>} and U{Module mgrs <https://www.Movable-Type.co.UK/scripts/geodesy/docs/module-mgrs.html>} and from I{Charles Karney}'s C++ class U{MGRS<https://GeographicLib.SourceForge.io/C++/doc/ classGeographicLib_1_1MGRS.html>}. MGRS references comprise a grid zone designation (GZD), a 100 km grid (square) tile identification and an easting and northing (in C{meter}). The GZD consists of a longitudinal zone (or column) I{number} and latitudinal band (row) I{letter} in the UTM region between 80°S and 84°N. Each zone (column) is 6° wide and each band (row) is 8° high, except top band 'X' is 12° tall. In UPS polar regions below 80°S and above 84°N the GZD contains only a single I{letter}, C{'A'} or C{'B'} near the south and C{'Y'} or C{'Z'} around the north pole (for west respectively east longitudes). See also the U{United States National Grid<https://www.FGDC.gov/standards/projects/ FGDC-standards-projects/usng/fgdc_std_011_2001_usng.pdf>} and U{Military Grid Reference System<https://WikiPedia.org/wiki/Military_grid_reference_system>}. See module L{pygeodesy.ups} for env variable C{PYGEODESY_UPS_POLES} determining the UPS encoding I{at} the south and north pole. Set env variable C{PYGEODESY_GEOCONVERT} to the (fully qualified) path of the C{GeoConvert} executable to run this module as I{python[3] -m pygeodesy.mgrs} and compare the MGRS results with those from I{Karney}'s utility U{GeoConvert <https://GeographicLib.sourceforge.io/C++/doc/GeoConvert.1.html>}. ''' from pygeodesy.basics import halfs2, _xinstanceof # from pygeodesy.constants import _0_5 # from .units from pygeodesy.datums import _ellipsoidal_datum, _WGS84 from pygeodesy.errors import _AssertionError, MGRSError, _parseX, \ _ValueError, _xkwds, _ALL_LAZY, _MODS from pygeodesy.interns import NN, _0_, _A_, _AtoZnoIO_, _band_, _B_, \ _COMMASPACE_, _datum_, _easting_, _invalid_, \ _northing_, _not_, _SPACE_, _splituple, _W_, \ _Y_, _Z_, _zone_ # from pygeodesy.lazily import _ALL_LAZY, _ALL_MODS as _MODS # from .errors from pygeodesy.named import _NamedBase, _NamedTuple, _Pass, _xnamed from pygeodesy.namedTuples import EasNor2Tuple, UtmUps5Tuple from pygeodesy.props import deprecated_property_RO, property_RO, Property_RO from pygeodesy.streprs import enstr2, _enstr2m3, Fmt, _resolution10, _xzipairs from pygeodesy.units import Easting, Northing, Str, _100km, _0_5 from pygeodesy.units import _1um, _2000km # PYCHOK used! from pygeodesy.ups import _hemi, toUps8, Ups, _UPS_ZONE from pygeodesy.utm import toUtm8, _to3zBlat, Utm, _UTM_ZONE_MAX, _UTM_ZONE_MIN # from pygeodesy.utmupsBase import _UTM_ZONE_MAX, _UTM_ZONE_MIN # from .utm __all__ = _ALL_LAZY.mgrs __version__ = '22.10.04' _AN_ = 'AN' # default south pole grid tile and band B _AtoPx_ = _AtoZnoIO_.tillP # <https://GitHub.com/hrbrmstr/mgrs/blob/master/src/mgrs.c> _FeUPS = {_A_: 8, _B_: 20, _Y_: 8, _Z_: 20} # falsed offsets (C{_100kms}) _FnUPS = {_A_: 8, _B_: 8, _Y_: 13, _Z_: 13} # falsed offsets (C{_100kms}) _JtoZx_ = 'JKLPQRSTUXYZZ' # _AtoZnoDEIMNOVW.fromJ, duplicate Z # 100 km grid tile UTM column (E) letters, repeating every third zone _LeUTM = _AtoZnoIO_.tillH, _AtoZnoIO_.fromJ.tillR, _AtoZnoIO_.fromS # grid E colums # 100 km grid tile UPS column (E) letters for each polar zone _LeUPS = {_A_: _JtoZx_, _B_: 'ABCFGHJKLPQR', _Y_: _JtoZx_, _Z_: 'ABCFGHJ'} # 100 km grid tile UTM and UPS row (N) letters, repeating every other zone _LnUTM = _AtoZnoIO_.tillV, _AtoZnoIO_.fromF.tillV + _AtoZnoIO_.tillE # grid N rows _LnUPS = {_A_: _AtoZnoIO_, _B_: _AtoZnoIO_, _Y_: _AtoPx_, _Z_: _AtoPx_} _polar_ = _SPACE_('polar', _zone_) class Mgrs(_NamedBase): '''Military Grid Reference System (MGRS/NATO) references, with method to convert to UTM coordinates. ''' _band = NN # latitudinal (C..X) or polar (ABYZ) band _bandLat = None # band latitude (C{degrees90} or C{None}) _datum = _WGS84 # Datum (L{Datum}) _easting = 0 # Easting (C{meter}), within 100 km grid tile _EN = NN # EN digraph (C{str}), 100 km grid tile _northing = 0 # Northing (C{meter}), within 100 km grid tile _resolution = 0 # from L{parseMGRS}, centering (C{meter}) _zone = 0 # longitudinal or polar zone (C{int}), 0..60 def __init__(self, zone=0, EN=NN, easting=0, northing=0, band=NN, datum=_WGS84, resolution=0, name=NN): '''New L{Mgrs} Military grid reference. @arg zone: The 6° I{longitudinal} zone (C{int}), 1..60 covering 180°W..180°E or C{0} for I{polar} regions or (C{str}) with the zone number and I{latitudinal} band letter. @arg EN: Two-letter EN digraph (C{str}), grid tile I{using only} the I{AA} aka I{MGRS-New} (row) U{lettering scheme <http://Wikipedia.org/wiki/Military_Grid_Reference_System>}. @kwarg easting: Easting (C{meter}), within 100 km grid tile. @kwarg northing: Northing (C{meter}), within 100 km grid tile. @kwarg band: Optional, I{latitudinal} band or I{polar} region letter (C{str}), 'C'|..|'X' covering 80°S..84°N (no 'I'|'O'), 'A'|'B' at the south or 'Y'|'Z' at the north pole. @kwarg datum: This reference's datum (L{Datum}, L{Ellipsoid}, L{Ellipsoid2} or L{a_f2Tuple}). @kwarg resolution: Optional resolution (C{meter}), C{0} for default. @kwarg name: Optional name (C{str}). @raise MGRSError: Invalid B{C{zone}}, B{C{EN}}, B{C{easting}}, B{C{northing}}, B{C{band}} or B{C{resolution}}. @raise TypeError: Invalid B{C{datum}}. @example: >>> from pygeodesy import Mgrs >>> m = Mgrs('31U', 'DQ', 48251, 11932) # 31U DQ 48251 11932 >>> m = Mgrs() # defaults to south pole >>> m.toLatLon() # ... lat=-90.0, lon=0.0, datum=... ''' if name: self.name = name if not (zone or EN or band): EN, band = _AN_, _B_ # default, south pole try: self._zone, self._band, self._bandLat = _to3zBlat(zone, band, Error=MGRSError) en = str(EN) if len(en) != 2 or not en.isalpha(): raise ValueError # caught below self._EN = en.upper() _ = self._EN2m # check E and N except (IndexError, KeyError, TypeError, ValueError): raise MGRSError(band=band, EN=EN, zone=zone) self._easting = Easting(easting, Error=MGRSError) self._northing = Northing(northing, Error=MGRSError) if datum not in (None, Mgrs._datum): self._datum = _ellipsoidal_datum(datum, name=name) # XXX raiser=_datum_ if resolution: self.resolution = resolution def __str__(self): return self.toStr(sep=_SPACE_) # for backward compatibility @property_RO def band(self): '''Get the I{latitudinal} band C{'C'|..|'X'} (no C{'I'|'O'}) or I{polar} region C{'A'|'B'|'Y'|'Z'}) letter (C{str}). ''' return self._band @Property_RO def bandLatitude(self): '''Get the band latitude (C{degrees90}). ''' return self._bandLat @Property_RO def datum(self): '''Get the datum (L{Datum}). ''' return self._datum @deprecated_property_RO def digraph(self): '''DEPRECATED, use property C{EN}.''' return self.EN @property_RO def EN(self): '''Get the 2-letter grid tile (C{str}). ''' return self._EN @deprecated_property_RO def en100k(self): '''DEPRECATED, use property C{EN}.''' return self.EN @Property_RO def _EN2m(self): '''(INTERNAL) Get the grid 2-tuple (easting, northing) in C{meter}. @note: Raises AssertionError, IndexError or KeyError: Invalid C{zone} number, C{EN} letter or I{polar} region letter. ''' EN = self.EN if self.isUTM: i = self.zone - 1 # get easting from the E column (note, +1 because # easting starts at 166e3 due to 500 km falsing) e = _LeUTM[i % 3].index(EN[0]) + 1 # similarly, get northing from the N row n = _LnUTM[i % 2].index(EN[1]) elif self.isUPS: B = self.band e = _LeUPS[B].index(EN[0]) + _FeUPS[B] n = _LnUPS[B].index(EN[1]) + _FnUPS[B] else: raise _AssertionError(zone=self.zone) return float(e * _100km), float(n * _100km) # meter @property_RO def easting(self): '''Get the easting (C{meter} within grid tile). ''' return self._easting @Property_RO def eastingnorthing(self): '''Get easting and northing (L{EasNor2Tuple}C{(easting, northing)}) I{within} the MGRS grid tile, both in C{meter}. ''' return EasNor2Tuple(self.easting, self.northing) @Property_RO def isUPS(self): '''Is this MGRS in a (polar) UPS zone (C{bool}). ''' return self._zone == _UPS_ZONE @Property_RO def isUTM(self): '''Is this MGRS in a (non-polar) UTM zone (C{bool}). ''' return _UTM_ZONE_MIN <= self._zone <= _UTM_ZONE_MAX @property_RO def northing(self): '''Get the northing (C{meter} within grid tile). ''' return self._northing @Property_RO def northingBottom(self): '''Get the northing of the band bottom (C{meter}). ''' a = self.bandLatitude u = toUtm8(a, 0, datum=self.datum, Utm=None) if self.isUTM else \ toUps8(a, 0, datum=self.datum, Ups=None) return int(u.northing / _100km) * _100km def parse(self, strMGRS, name=NN): '''Parse a string to a similar L{Mgrs} instance. @arg strMGRS: The MGRS reference (C{str}), see function L{parseMGRS}. @kwarg name: Optional instance name (C{str}), overriding this name. @return: The similar instance (L{Mgrs}). @raise MGRSError: Invalid B{C{strMGRS}}. ''' return parseMGRS(strMGRS, datum=self.datum, Mgrs=self.classof, name=name or self.name) @property def resolution(self): '''Get the MGRS resolution (C{meter}, power of 10) or C{0} if undefined. ''' return self._resolution @resolution.setter # PYCHOK setter! def resolution(self, resolution): '''Set the MGRS resolution (C{meter}, power of 10) or C{0} to undefine and disable UPS/UTM centering. @raise MGRSError: Invalid B{C{resolution}}, over C{1.e+5} or under C{1.e-6}. ''' if resolution: # and resolution > 0 r = _resolution10(resolution, Error=MGRSError) else: r = 0 if self._resolution != r: self._resolution = r @Property_RO def tilesize(self): '''Get the MGRS grid tile size (C{meter}). ''' assert _MODS.utmups._MGRS_TILE is _100km return _100km def toLatLon(self, LatLon=None, center=True, **toLatLon_kwds): '''Convert this MGRS grid reference to a UTM coordinate. @kwarg LatLon: Optional, ellipsoidal class to return the geodetic point (C{LatLon}) or C{None}. @kwarg center: Optionally, return the grid's center or lower left corner (C{bool}). @kwarg toLatLon_kwds: Optional, additional L{Utm.toLatLon} and B{C{LatLon}} keyword arguments. @return: A B{C{LatLon}} instance or if C{B{LatLon} is None} a L{LatLonDatum5Tuple}C{(lat, lon, datum, gamma, scale)}. @raise TypeError: If B{C{LatLon}} is not ellipsoidal. @raise UTMError: Invalid meridional radius or H-value. @see: Methods L{Mgrs.toUtm} and L{Utm.toLatLon}. ''' u = self.toUtmUps(center=center) return u.toLatLon(LatLon=LatLon, **toLatLon_kwds) def toRepr(self, fmt=Fmt.SQUARE, sep=_COMMASPACE_, **prec): # PYCHOK expected '''Return a string representation of this MGRS grid reference. @kwarg fmt: Enclosing backets format (C{str}). @kwarg sep: Separator between name:values (C{str}). @kwarg prec: Precision (C{int}), see method L{Mgrs.toStr}. @return: This Mgrs as "[Z:[dd]B, G:EN, E:easting, N:northing]" (C{str}), with C{B{sep} ", "}. @note: MGRS grid references are truncated, not rounded (unlike UTM/UPS coordinates). @raise ValueError: Invalid B{C{prec}}. ''' t = self.toStr(sep=None, **prec) return _xzipairs('ZGEN', t, sep=sep, fmt=fmt) def toStr(self, prec=0, sep=NN): # PYCHOK expected '''Return this MGRS grid reference as a string. @kwarg prec: Precision, the number of I{decimal} digits (C{int}) or if negative, the number of I{units to drop}, like MGRS U{PRECISION <https://GeographicLib.SourceForge.io/C++/doc/GeoConvert.1.html#PRECISION>}. @kwarg sep: Optional separator to join (C{str}) or C{None} to return an unjoined 3-C{tuple} of C{str}s. @return: This Mgrs as 4-tuple C{("dd]B", "EN", "easting", "northing")} if C{B{sep}=NN} or "[dd]B EN easting northing" (C{str}) with C{B{sep} " "}. @note: Both C{easting} and C{northing} strings are C{NN} or missing if C{B{prec} <= -5}. @note: MGRS grid references are truncated, not rounded (unlike UTM/UPS). @raise ValueError: Invalid B{C{prec}}. @example: >>> from pygeodesy import Mgrs, NN, parseMGRS >>> m = Mgrs(31, 'DQ', 48251, 11932, band='U') >>> m.toStr() # '31U DQ 48251 11932' >>> m = parseMGRS('BAN1234567890') >>> str(m) # 'B AN 12345 67890' >>> m.toStr() # 'BAN1234567890' >>> m.toStr(prec=-2) # 'BAN123678' ''' zB = self.zoneB t = enstr2(self._easting, self._northing, prec, zB, self.EN) return t if sep is None else sep.join(t).rstrip() def toUps(self, Ups=Ups, center=False): '''Convert this MGRS grid reference to a UPS coordinate. @kwarg Ups: Optional class to return the UPS coordinate (L{Ups}) or C{None}. @kwarg center: Optionally, center easting and northing by the resolution (C{bool}). @return: A B{C{Ups}} instance or if C{B{Ups} is None} a L{UtmUps5Tuple}C{(zone, hemipole, easting, northing, band)}. @raise MGRSError: This MGRS is a I{non-polar} UTM reference. ''' if self.isUTM: raise MGRSError(zoneB=self.zoneB, txt=_not_(_polar_)) return self._toUtmUps(Ups, center) def toUtm(self, Utm=Utm, center=False): '''Convert this MGRS grid reference to a UTM coordinate. @kwarg Utm: Optional class to return the UTM coordinate (L{Utm}) or C{None}. @kwarg center: Optionally, center easting and northing by the resolution (C{bool}). @return: A B{C{Utm}} instance or if C{B{Utm} is None} a L{UtmUps5Tuple}C{(zone, hemipole, easting, northing, band)}. @raise MGRSError: This MGRS is a I{polar} UPS reference. ''' if self.isUPS: raise MGRSError(zoneB=self.zoneB, txt=_polar_) return self._toUtmUps(Utm, center) def toUtmUps(self, Utm=Utm, Ups=Ups, center=False): '''Convert this MGRS grid reference to a UTM or UPS coordinate. @kwarg Utm: Optional class to return the UTM coordinate (L{Utm}) or C{None}. @kwarg Ups: Optional class to return the UPS coordinate (L{Utm}) or C{None}. @kwarg center: Optionally, center easting and northing by the resolution (C{bool}). @return: A B{C{Utm}} or B{C{Ups}} instance or if C{B{Utm} or B{Ups} is None} a L{UtmUps5Tuple}C{(zone, hemipole, easting, northing, band)}. ''' return self._toUtmUps((Utm if self.isUTM else (Ups if self.isUPS else None)), center) def _toUtmUps(self, U, center): '''(INTERNAL) Helper for C{.toUps} and C{.toUtm}. ''' e, n = self._EN2m e += self.easting n += self.northing if self.isUTM: # 100 km row letters repeat every 2,000 km north; # add 2,000 km blocks to get into required band b = (self.northingBottom - n) / _2000km if b > 0: b = int(b) + 1 b = min(b, (3 if self.band == _W_ else 4)) n += b * _2000km if center: c = self.resolution if c: c *= _0_5 e += c n += c z = self.zone h = _hemi(self.bandLatitude) # _S_ if self.band < _N_ else _N_ B = self.band m = self.name return UtmUps5Tuple(z, h, e, n, B, name=m, Error=MGRSError) if U is None \ else U(z, h, e, n, B, name=m, datum=self.datum) @property_RO def zone(self): '''Get the I{longitudinal} zone (C{int}), 1..60 or 0 for I{polar}. ''' return self._zone @Property_RO def zoneB(self): '''Get the I{polar} region letter or the I{longitudinal} zone digits plus I{latitudinal} band letter (C{str}). ''' return self.band if self.isUPS else NN(Fmt.zone(self.zone), self.band) class Mgrs4Tuple(_NamedTuple): '''4-Tuple C{(zone, EN, easting, northing)}, C{zone} and grid tile C{EN} as C{str}, C{easting} and C{northing} in C{meter}. @note: The C{zone} consists of either the I{longitudinal} zone number plus the I{latitudinal} band letter or only the I{polar} region letter. ''' _Names_ = (_zone_, 'EN', _easting_, _northing_) _Units_ = ( Str, Str, Easting, Northing) @deprecated_property_RO def digraph(self): '''DEPRECATED, use attribute C{EN}.''' return self.EN # PYCHOK or [1] def toMgrs(self, **Mgrs_and_kwds): '''Return this L{Mgrs4Tuple} as an L{Mgrs} instance. ''' return self.to6Tuple(NN, _WGS84).toMgrs(**Mgrs_and_kwds) def to6Tuple(self, band=NN, datum=_WGS84): '''Extend this L{Mgrs4Tuple} to a L{Mgrs6Tuple}. @kwarg band: The band (C{str}). @kwarg datum: The datum (L{Datum}). @return: An L{Mgrs6Tuple}C{(zone, EN, easting, northing, band, datum)}. ''' z = self.zone # PYCHOK or [0] B = z[-1:] if B.isalpha(): z = z[:-1] or Fmt.zone(0) t = Mgrs6Tuple(z, self.EN, self.easting, self.northing, # PYCHOK attrs band or B, datum, name=self.name) else: t = self._xtend(Mgrs6Tuple, band, datum) return t class Mgrs6Tuple(_NamedTuple): # XXX only used above '''6-Tuple C{(zone, EN, easting, northing, band, datum)}, with C{zone}, grid tile C{EN} and C{band} as C{str}, C{easting} and C{northing} in C{meter} and C{datum} a L{Datum}. @note: The C{zone} is the I{longitudinal} zone C{"01".."60"} or C{"00"} for I{polar} regions and C{band} is the I{latitudinal} band or I{polar} region letter. ''' _Names_ = Mgrs4Tuple._Names_ + (_band_, _datum_) _Units_ = Mgrs4Tuple._Units_ + ( Str, _Pass) @deprecated_property_RO def digraph(self): '''DEPRECATED, use attribute C{EN}.''' return self.EN # PYCHOK or [1] def toMgrs(self, Mgrs=Mgrs, **Mgrs_kwds): '''Return this L{Mgrs6Tuple} as an L{Mgrs} instance. ''' kwds = dict(self.items()) if self.name: kwds.update(name=self.name) if Mgrs_kwds: kwds.update(Mgrs_kwds) return Mgrs(**kwds) class _RE(object): '''(INTERNAL) Lazily compiled C{re}gex-es to parse MGRS strings. ''' _EN = '([A-Z]{2})' # 2-letter grid tile designation _en = '([0-9]+)' # easting_northing digits, 2-10+ _pB = '([ABYZ]{1})' # polar region letter, pseudo-zone 0 _zB = '([0-9]{1,2}[C-X]{1})' # zone number and band letter, no I|O @Property_RO def pB_EN(self): # split polar "BEN" into 2 parts import re # PYCHOK warning locale.Error return re.compile(_RE._pB + _RE._EN, re.IGNORECASE) @Property_RO def pB_EN_en(self): # split polar "BEN1235..." into 3 parts import re # PYCHOK warning locale.Error return re.compile(_RE._pB + _RE._EN + _RE._en, re.IGNORECASE) @Property_RO def zB_EN(self): # split "1[2]BEN" into 2 parts import re # PYCHOK warning locale.Error return re.compile(_RE._zB + _RE._EN, re.IGNORECASE) @Property_RO def zB_EN_en(self): # split "1[2]BEN1235..." into 3 parts import re # PYCHOK warning locale.Error return re.compile(_RE._zB + _RE._EN + _RE._en, re.IGNORECASE) _RE = _RE() # PYCHOK singleton def parseMGRS(strMGRS, datum=_WGS84, Mgrs=Mgrs, name=NN): '''Parse a string representing a MGRS grid reference, consisting of C{"[zone]Band, EN, easting, northing"}. @arg strMGRS: MGRS grid reference (C{str}). @kwarg datum: Optional datum to use (L{Datum}). @kwarg Mgrs: Optional class to return the MGRS grid reference (L{Mgrs}) or C{None}. @kwarg name: Optional B{C{Mgrs}} name (C{str}). @return: The MGRS grid reference as B{C{Mgrs}} or if C{B{Mgrs} is None} as an L{Mgrs4Tuple}C{(zone, EN, easting, northing)}. @raise MGRSError: Invalid B{C{strMGRS}}. @example: >>> m = parseMGRS('31U DQ 48251 11932') >>> str(m) # '31U DQ 48251 11932' >>> m = parseMGRS('31UDQ4825111932') >>> repr(m) # [Z:31U, G:DQ, E:48251, N:11932] >>> m = parseMGRS('42SXD0970538646') >>> str(m) # '42S XD 09705 38646' >>> m = parseMGRS('42SXD9738') # Km >>> str(m) # '42S XD 97000 38000' >>> m = parseMGRS('YUB17770380') # polar >>> str(m) # 'Y UB 17770 03800' ''' def _mg(s, re_UTM, re_UPS): # return re.match groups m = re_UTM.match(s) if m: return m.groups() m = re_UPS.match(s.lstrip(_0_)) if m: return m.groups() # m = m.groups() # t = '00' + m[0] # return (t,) + m[1:] raise ValueError(_SPACE_(repr(s), _invalid_)) def _MGRS(strMGRS, datum, Mgrs, name): m = _splituple(strMGRS.strip()) if len(m) == 1: # [01]BEN1234512345' m = _mg(m[0], _RE.zB_EN_en, _RE.pB_EN_en) m = m[:2] + halfs2(m[2]) elif len(m) == 2: # [01]BEN 1234512345' m = _mg(m[0], _RE.zB_EN, _RE.pB_EN) + halfs2(m[1]) elif len(m) == 3: # [01]BEN 12345 12345' m = _mg(m[0], _RE.zB_EN, _RE.pB_EN) + m[1:] if len(m) != 4: # [01]B EN 12345 12345 raise ValueError zB, EN = m[0].upper(), m[1].upper() if zB[-1:] in 'IO': raise ValueError(_SPACE_(repr(m[0]), _invalid_)) e, n, m = _enstr2m3(*m[2:]) if Mgrs is None: r = Mgrs4Tuple(zB, EN, e, n, name=name) _ = r.toMgrs(resolution=m) # validate else: r = Mgrs(zB, EN, e, n, datum=datum, resolution=m, name=name) return r return _parseX(_MGRS, strMGRS, datum, Mgrs, name, strMGRS=strMGRS, Error=MGRSError) def toMgrs(utmups, Mgrs=Mgrs, name=NN, **Mgrs_kwds): '''Convert a UTM or UPS coordinate to an MGRS grid reference. @arg utmups: A UTM or UPS coordinate (L{Utm}, L{Etm} or L{Ups}). @kwarg Mgrs: Optional class to return the MGRS grid reference (L{Mgrs}) or C{None}. @kwarg name: Optional B{C{Mgrs}} name (C{str}). @kwarg Mgrs_kwds: Optional, additional B{C{Mgrs}} keyword arguments, ignored if C{B{Mgrs} is None}. @return: The MGRS grid reference as B{C{Mgrs}} or if C{B{Mgrs} is None} as an L{Mgrs6Tuple}C{(zone, EN, easting, northing, band, datum)}. @raise MGRSError: Invalid B{C{utmups}}. @raise TypeError: If B{C{utmups}} is not L{Utm} nor L{Etm} nor L{Ups}. @example: >>> u = Utm(31, 'N', 448251, 5411932) >>> m = u.toMgrs() # 31U DQ 48251 11932 ''' # _MODS.utmups.utmupsValidate(utmups, MGRS=True, Error-MGRSError) _xinstanceof(Utm, Ups, utmups=utmups) # Utm, Etm, Ups try: e, n = utmups.eastingnorthing2(falsed=True) E, e = _um100km2(e) N, n = _um100km2(n) B, z = utmups.band, utmups.zone if _UTM_ZONE_MIN <= z <= _UTM_ZONE_MAX: i = z - 1 # columns in zone 1 are A-H, zone 2 J-R, zone 3 S-Z, # then repeating every 3rd zone (note E-1 because # eastings start at 166e3 due to 500km false origin) EN = _LeUTM[i % 3][E - 1] # rows in even zones are A-V, in odd zones are F-E EN += _LnUTM[i % 2][N % len(_LnUTM[0])] elif z == _UPS_ZONE: EN = _LeUPS[B][E - _FeUPS[B]] EN += _LnUPS[B][N - _FnUPS[B]] else: raise _ValueError(zone=z) except (IndexError, TypeError, ValueError) as x: raise MGRSError(B=B, E=E, N=N, utmups=utmups, cause=x) if Mgrs is None: r = Mgrs4Tuple(Fmt.zone(z), EN, e, n).to6Tuple(B, utmups.datum) else: kwds = _xkwds(Mgrs_kwds, band=B, datum=utmups.datum) r = Mgrs(z, EN, e, n, **kwds) return _xnamed(r, name or utmups.name) def _um100km2(m): '''(INTERNAL) An MGRS east-/northing truncated to micrometer (um) precision and to grid tile C{M} and C{m}eter within the tile. ''' m = int(m / _1um) * _1um # micrometer M, m = divmod(m, _100km) return int(M), m if __name__ == '__main__': from pygeodesy.ellipsoidalVincenty import LatLon from pygeodesy.lazily import _getenv, printf from os import access as _access, linesep as _NL, X_OK as _X_OK # <https://GeographicLib.sourceforge.io/C++/doc/GeoConvert.1.html> _GeoConvert = _getenv('PYGEODESY_GEOCONVERT', '/opt/local/bin/GeoConvert') if _access(_GeoConvert, _X_OK): GC_m = _GeoConvert, '-m' # -m converts latlon to MGRS printf(' using: %s ...', _SPACE_.join(GC_m)) from pygeodesy.solveBase import _popen2 else: GC_m = _popen2 = None e = n = 0 try: for lat in range(-90, 91, 1): printf('%6s: lat %s ...', n, lat, end=NN, flush=True) nl = _NL for lon in range(-180, 181, 1): m = LatLon(lat, lon).toMgrs() if _popen2: t = '%s %s' % (lat, lon) g = _popen2(GC_m, stdin=t)[1] t = m.toStr() # sep=NN if t != g: e += 1 printf('%s%6s: %s: %r vs %r (lon %s)', nl, -e, m, t, g, lon) nl = NN t = m.toLatLon(LatLon=LatLon) d = max(abs(t.lat - lat), abs(t.lon - lon)) if d > 1e-9 and -90 < lat < 90 and -180 < lon < 180: e += 1 printf('%s%6s: %s: %s vs %s %.6e', nl, -e, m, t.latlon, (float(lat), float(lon)), d) nl = NN n += 1 if nl: print(' OK') except KeyboardInterrupt: printf(nl) p = e * 100.0 / n printf('%6s: %s errors (%.2f%%)', n, (e if e else 'no'), p) # **) MIT License # # Copyright (C) 2016-2023 -- 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.