├── .travis.yml
├── CHANGELOG.md
├── LICENSE
├── README.md
├── index.js
├── package.json
└── test
    ├── all.json
    ├── basic.js
    └── illinois.json


/.travis.yml:
--------------------------------------------------------------------------------
1 | language: node_js
2 | 


--------------------------------------------------------------------------------
/CHANGELOG.md:
--------------------------------------------------------------------------------
 1 | <a name="0.2.2"></a>
 2 | ## [0.2.2](https://github.com/mapbox/geojson-area/compare/v0.2.1...v0.2.2) (2016-12-19)
 3 | 
 4 | 
 5 | ### Bug Fixes
 6 | 
 7 | * **algorithm:** Avoid accidental global i, fixes use strict ([1646944](https://github.com/mapbox/geojson-area/commit/1646944))
 8 | 
 9 | 
10 | 
11 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | Copyright 2005-2013 OpenLayers Contributors. All rights reserved. See
 2 | authors.txt for full list.
 3 | 
 4 | Redistribution and use in source and binary forms, with or without modification,
 5 | are permitted provided that the following conditions are met:
 6 | 
 7 |  1. Redistributions of source code must retain the above copyright notice, this
 8 | list of conditions and the following disclaimer.
 9 | 
10 |  2. Redistributions in binary form must reproduce the above copyright notice,
11 | this list of conditions and the following disclaimer in the documentation and/or
12 | other materials provided with the distribution.
13 | 
14 | THIS SOFTWARE IS PROVIDED BY OPENLAYERS CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
15 | OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
17 | SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
18 | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
19 | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
21 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
22 | OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
23 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 | 
25 | The views and conclusions contained in the software and documentation are those
26 | of the authors and should not be interpreted as representing official policies,
27 | either expressed or implied, of OpenLayers Contributors.
28 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | [![Build Status](https://travis-ci.org/mapbox/geojson-area.png)](https://travis-ci.org/mapbox/geojson-area)
 2 | 
 3 | # geojson-area
 4 | 
 5 | Calculate the area inside of any [GeoJSON](http://geojson.org/) geometry.
 6 | 
 7 | ## usage
 8 | 
 9 |     npm install @mapbox/geojson-area
10 | 
11 | ## example
12 | 
13 | ```js
14 | var geojsonArea = require('@mapbox/geojson-area');
15 | 
16 | var area = geojsonArea.geometry(obj);
17 | ```
18 | 
19 | ## api
20 | 
21 | ### `geojsonArea.geometry(obj)`
22 | 
23 | Given a Geometry object, return contained
24 | area as square meters. Invalid input will return `null`.
25 | 
26 | Adapted from [OpenLayers](http://openlayers.org/)
27 | 


--------------------------------------------------------------------------------
/index.js:
--------------------------------------------------------------------------------
 1 | var wgs84 = require('wgs84');
 2 | 
 3 | module.exports.geometry = geometry;
 4 | module.exports.ring = ringArea;
 5 | 
 6 | function geometry(_) {
 7 |     var area = 0, i;
 8 |     switch (_.type) {
 9 |         case 'Polygon':
10 |             return polygonArea(_.coordinates);
11 |         case 'MultiPolygon':
12 |             for (i = 0; i < _.coordinates.length; i++) {
13 |                 area += polygonArea(_.coordinates[i]);
14 |             }
15 |             return area;
16 |         case 'Point':
17 |         case 'MultiPoint':
18 |         case 'LineString':
19 |         case 'MultiLineString':
20 |             return 0;
21 |         case 'GeometryCollection':
22 |             for (i = 0; i < _.geometries.length; i++) {
23 |                 area += geometry(_.geometries[i]);
24 |             }
25 |             return area;
26 |     }
27 | }
28 | 
29 | function polygonArea(coords) {
30 |     var area = 0;
31 |     if (coords && coords.length > 0) {
32 |         area += Math.abs(ringArea(coords[0]));
33 |         for (var i = 1; i < coords.length; i++) {
34 |             area -= Math.abs(ringArea(coords[i]));
35 |         }
36 |     }
37 |     return area;
38 | }
39 | 
40 | /**
41 |  * Calculate the approximate area of the polygon were it projected onto
42 |  *     the earth.  Note that this area will be positive if ring is oriented
43 |  *     clockwise, otherwise it will be negative.
44 |  *
45 |  * Reference:
46 |  * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
47 |  *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
48 |  *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
49 |  *
50 |  * Returns:
51 |  * {float} The approximate signed geodesic area of the polygon in square
52 |  *     meters.
53 |  */
54 | 
55 | function ringArea(coords) {
56 |     var p1, p2, p3, lowerIndex, middleIndex, upperIndex, i,
57 |     area = 0,
58 |     coordsLength = coords.length;
59 | 
60 |     if (coordsLength > 2) {
61 |         for (i = 0; i < coordsLength; i++) {
62 |             if (i === coordsLength - 2) {// i = N-2
63 |                 lowerIndex = coordsLength - 2;
64 |                 middleIndex = coordsLength -1;
65 |                 upperIndex = 0;
66 |             } else if (i === coordsLength - 1) {// i = N-1
67 |                 lowerIndex = coordsLength - 1;
68 |                 middleIndex = 0;
69 |                 upperIndex = 1;
70 |             } else { // i = 0 to N-3
71 |                 lowerIndex = i;
72 |                 middleIndex = i+1;
73 |                 upperIndex = i+2;
74 |             }
75 |             p1 = coords[lowerIndex];
76 |             p2 = coords[middleIndex];
77 |             p3 = coords[upperIndex];
78 |             area += ( rad(p3[0]) - rad(p1[0]) ) * Math.sin( rad(p2[1]));
79 |         }
80 | 
81 |         area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
82 |     }
83 | 
84 |     return area;
85 | }
86 | 
87 | function rad(_) {
88 |     return _ * Math.PI / 180;
89 | }


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "@mapbox/geojson-area",
 3 |   "version": "0.2.2",
 4 |   "description": "calculate the physical area of a geojson geometry",
 5 |   "main": "index.js",
 6 |   "directories": {
 7 |     "test": "test"
 8 |   },
 9 |   "repository": {
10 |     "type": "git",
11 |     "url": "git@github.com:mapbox/geojson-area.git"
12 |   },
13 |   "scripts": {
14 |     "test": "tape test/basic.js"
15 |   },
16 |   "keywords": [
17 |     "geojson",
18 |     "area",
19 |     "geodesy"
20 |   ],
21 |   "author": "Tom MacWright",
22 |   "license": "BSD-2-Clause",
23 |   "dependencies": {
24 |     "wgs84": "0.0.0"
25 |   },
26 |   "devDependencies": {
27 |     "cz-conventional-changelog": "^1.2.0",
28 |     "tape": "^3.0.3"
29 |   },
30 |   "config": {
31 |     "commitizen": {
32 |       "path": "./node_modules/cz-conventional-changelog"
33 |     }
34 |   }
35 | }
36 | 


--------------------------------------------------------------------------------
/test/all.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "type": "Polygon",
 3 |   "coordinates": [[
 4 |       [-180, -90],
 5 |       [-180, 90],
 6 |       [180, 90],
 7 |       [180, -90],
 8 |       [-180, -90]
 9 |     ]
10 |   ]
11 | }
12 | 


--------------------------------------------------------------------------------
/test/basic.js:
--------------------------------------------------------------------------------
 1 | var gjArea = require('../'),
 2 |     test = require('tape'),
 3 |     ill = require('./illinois.json'),
 4 |     all = require('./all.json');
 5 | 
 6 | test('geojson area', function(t) {
 7 |     t.test('computes the area of illinois', function(t) {
 8 |         t.equal(gjArea.geometry(ill), 145978332359.36746);
 9 |         t.end();
10 |     });
11 |     // http://www.wolframalpha.com/input/?i=surface+area+of+earth
12 |     t.test('computes the area of the world', function(t) {
13 |         t.equal(gjArea.geometry(all), 511207893395811.06);
14 |         t.end();
15 |     });
16 |     t.test('point has zero area', function(t) {
17 |         t.equal(gjArea.geometry({ type: 'Point', coordinates: [0,0] }), 0);
18 |         t.end();
19 |     });
20 |     t.test('linestring has zero area', function(t) {
21 |         t.equal(gjArea.geometry({ type: 'LineString', coordinates: [[0,0],[1,1]] }), 0);
22 |         t.end();
23 |     });
24 |     t.test('geometrycollection is the sum', function(t) {
25 |         t.equal(gjArea.geometry({ type: 'GeometryCollection', geometries: [all, ill] }), 511353871728170.44);
26 |         t.end();
27 |     });
28 |     t.end();
29 | });
30 | 


--------------------------------------------------------------------------------
/test/illinois.json:
--------------------------------------------------------------------------------
   1 | {
   2 |   "type": "MultiPolygon",
   3 |   "coordinates": [[
   4 |     [
   5 |       [
   6 |         -88.071564,
   7 |         37.51099
   8 |       ],
   9 |       [
  10 |         -88.087883,
  11 |         37.476273
  12 |       ],
  13 |       [
  14 |         -88.311707,
  15 |         37.442852
  16 |       ],
  17 |       [
  18 |         -88.359177,
  19 |         37.409309
  20 |       ],
  21 |       [
  22 |         -88.419853,
  23 |         37.420292
  24 |       ],
  25 |       [
  26 |         -88.467644,
  27 |         37.400757
  28 |       ],
  29 |       [
  30 |         -88.511322,
  31 |         37.296852
  32 |       ],
  33 |       [
  34 |         -88.501427,
  35 |         37.257782
  36 |       ],
  37 |       [
  38 |         -88.450699,
  39 |         37.205669
  40 |       ],
  41 |       [
  42 |         -88.422516,
  43 |         37.15691
  44 |       ],
  45 |       [
  46 |         -88.45047,
  47 |         37.098671
  48 |       ],
  49 |       [
  50 |         -88.476799,
  51 |         37.072144
  52 |       ],
  53 |       [
  54 |         -88.4907,
  55 |         37.06818
  56 |       ],
  57 |       [
  58 |         -88.517273,
  59 |         37.06477
  60 |       ],
  61 |       [
  62 |         -88.559273,
  63 |         37.072815
  64 |       ],
  65 |       [
  66 |         -88.61422,
  67 |         37.109047
  68 |       ],
  69 |       [
  70 |         -88.68837,
  71 |         37.13541
  72 |       ],
  73 |       [
  74 |         -88.739113,
  75 |         37.141182
  76 |       ],
  77 |       [
  78 |         -88.746506,
  79 |         37.152107
  80 |       ],
  81 |       [
  82 |         -88.863289,
  83 |         37.202194
  84 |       ],
  85 |       [
  86 |         -88.932503,
  87 |         37.218407
  88 |       ],
  89 |       [
  90 |         -88.993172,
  91 |         37.220036
  92 |       ],
  93 |       [
  94 |         -89.065033,
  95 |         37.18586
  96 |       ],
  97 |       [
  98 |         -89.116821,
  99 |         37.112137
 100 |       ],
 101 |       [
 102 |         -89.146347,
 103 |         37.093185
 104 |       ],
 105 |       [
 106 |         -89.169548,
 107 |         37.064236
 108 |       ],
 109 |       [
 110 |         -89.174332,
 111 |         37.025711
 112 |       ],
 113 |       [
 114 |         -89.150246,
 115 |         36.99844
 116 |       ],
 117 |       [
 118 |         -89.12986,
 119 |         36.988113
 120 |       ],
 121 |       [
 122 |         -89.193512,
 123 |         36.986771
 124 |       ],
 125 |       [
 126 |         -89.210052,
 127 |         37.028973
 128 |       ],
 129 |       [
 130 |         -89.237679,
 131 |         37.041733
 132 |       ],
 133 |       [
 134 |         -89.264053,
 135 |         37.087124
 136 |       ],
 137 |       [
 138 |         -89.284233,
 139 |         37.091244
 140 |       ],
 141 |       [
 142 |         -89.303291,
 143 |         37.085384
 144 |       ],
 145 |       [
 146 |         -89.3097,
 147 |         37.060909
 148 |       ],
 149 |       [
 150 |         -89.264244,
 151 |         37.027733
 152 |       ],
 153 |       [
 154 |         -89.262001,
 155 |         37.008686
 156 |       ],
 157 |       [
 158 |         -89.282768,
 159 |         36.999207
 160 |       ],
 161 |       [
 162 |         -89.310982,
 163 |         37.009682
 164 |       ],
 165 |       [
 166 |         -89.38295,
 167 |         37.049213
 168 |       ],
 169 |       [
 170 |         -89.37999,
 171 |         37.099083
 172 |       ],
 173 |       [
 174 |         -89.423798,
 175 |         37.137203
 176 |       ],
 177 |       [
 178 |         -89.440521,
 179 |         37.165318
 180 |       ],
 181 |       [
 182 |         -89.468216,
 183 |         37.224266
 184 |       ],
 185 |       [
 186 |         -89.465309,
 187 |         37.253731
 188 |       ],
 189 |       [
 190 |         -89.489594,
 191 |         37.256001
 192 |       ],
 193 |       [
 194 |         -89.513885,
 195 |         37.276402
 196 |       ],
 197 |       [
 198 |         -89.513885,
 199 |         37.304962
 200 |       ],
 201 |       [
 202 |         -89.50058,
 203 |         37.329441
 204 |       ],
 205 |       [
 206 |         -89.468742,
 207 |         37.339409
 208 |       ],
 209 |       [
 210 |         -89.435738,
 211 |         37.355717
 212 |       ],
 213 |       [
 214 |         -89.427574,
 215 |         37.411018
 216 |       ],
 217 |       [
 218 |         -89.453621,
 219 |         37.453186
 220 |       ],
 221 |       [
 222 |         -89.494781,
 223 |         37.491726
 224 |       ],
 225 |       [
 226 |         -89.524971,
 227 |         37.571957
 228 |       ],
 229 |       [
 230 |         -89.513367,
 231 |         37.615929
 232 |       ],
 233 |       [
 234 |         -89.51918,
 235 |         37.650375
 236 |       ],
 237 |       [
 238 |         -89.513374,
 239 |         37.67984
 240 |       ],
 241 |       [
 242 |         -89.521523,
 243 |         37.694798
 244 |       ],
 245 |       [
 246 |         -89.581436,
 247 |         37.706104
 248 |       ],
 249 |       [
 250 |         -89.666458,
 251 |         37.745453
 252 |       ],
 253 |       [
 254 |         -89.675858,
 255 |         37.78397
 256 |       ],
 257 |       [
 258 |         -89.691055,
 259 |         37.804794
 260 |       ],
 261 |       [
 262 |         -89.728447,
 263 |         37.840992
 264 |       ],
 265 |       [
 266 |         -89.851715,
 267 |         37.905064
 268 |       ],
 269 |       [
 270 |         -89.861046,
 271 |         37.905487
 272 |       ],
 273 |       [
 274 |         -89.866814,
 275 |         37.891876
 276 |       ],
 277 |       [
 278 |         -89.900551,
 279 |         37.875904
 280 |       ],
 281 |       [
 282 |         -89.937874,
 283 |         37.878044
 284 |       ],
 285 |       [
 286 |         -89.978912,
 287 |         37.911884
 288 |       ],
 289 |       [
 290 |         -89.958229,
 291 |         37.963634
 292 |       ],
 293 |       [
 294 |         -90.010811,
 295 |         37.969318
 296 |       ],
 297 |       [
 298 |         -90.041924,
 299 |         37.993206
 300 |       ],
 301 |       [
 302 |         -90.119339,
 303 |         38.032272
 304 |       ],
 305 |       [
 306 |         -90.134712,
 307 |         38.053951
 308 |       ],
 309 |       [
 310 |         -90.207527,
 311 |         38.088905
 312 |       ],
 313 |       [
 314 |         -90.254059,
 315 |         38.122169
 316 |       ],
 317 |       [
 318 |         -90.289635,
 319 |         38.166817
 320 |       ],
 321 |       [
 322 |         -90.336716,
 323 |         38.188713
 324 |       ],
 325 |       [
 326 |         -90.364769,
 327 |         38.234299
 328 |       ],
 329 |       [
 330 |         -90.369347,
 331 |         38.323559
 332 |       ],
 333 |       [
 334 |         -90.358688,
 335 |         38.36533
 336 |       ],
 337 |       [
 338 |         -90.339607,
 339 |         38.390846
 340 |       ],
 341 |       [
 342 |         -90.301842,
 343 |         38.427357
 344 |       ],
 345 |       [
 346 |         -90.265785,
 347 |         38.518688
 348 |       ],
 349 |       [
 350 |         -90.26123,
 351 |         38.532768
 352 |       ],
 353 |       [
 354 |         -90.240944,
 355 |         38.562805
 356 |       ],
 357 |       [
 358 |         -90.183708,
 359 |         38.610271
 360 |       ],
 361 |       [
 362 |         -90.183578,
 363 |         38.658772
 364 |       ],
 365 |       [
 366 |         -90.20224,
 367 |         38.700363
 368 |       ],
 369 |       [
 370 |         -90.196571,
 371 |         38.723965
 372 |       ],
 373 |       [
 374 |         -90.163399,
 375 |         38.773098
 376 |       ],
 377 |       [
 378 |         -90.135178,
 379 |         38.785484
 380 |       ],
 381 |       [
 382 |         -90.121727,
 383 |         38.80051
 384 |       ],
 385 |       [
 386 |         -90.113121,
 387 |         38.830467
 388 |       ],
 389 |       [
 390 |         -90.132812,
 391 |         38.853031
 392 |       ],
 393 |       [
 394 |         -90.243927,
 395 |         38.914509
 396 |       ],
 397 |       [
 398 |         -90.278931,
 399 |         38.924717
 400 |       ],
 401 |       [
 402 |         -90.31974,
 403 |         38.924908
 404 |       ],
 405 |       [
 406 |         -90.413071,
 407 |         38.96233
 408 |       ],
 409 |       [
 410 |         -90.469841,
 411 |         38.959179
 412 |       ],
 413 |       [
 414 |         -90.530426,
 415 |         38.891609
 416 |       ],
 417 |       [
 418 |         -90.570328,
 419 |         38.871326
 420 |       ],
 421 |       [
 422 |         -90.627213,
 423 |         38.880795
 424 |       ],
 425 |       [
 426 |         -90.668877,
 427 |         38.935253
 428 |       ],
 429 |       [
 430 |         -90.70607,
 431 |         39.037792
 432 |       ],
 433 |       [
 434 |         -90.707588,
 435 |         39.058178
 436 |       ],
 437 |       [
 438 |         -90.690399,
 439 |         39.0937
 440 |       ],
 441 |       [
 442 |         -90.716736,
 443 |         39.144211
 444 |       ],
 445 |       [
 446 |         -90.718193,
 447 |         39.195873
 448 |       ],
 449 |       [
 450 |         -90.732338,
 451 |         39.224747
 452 |       ],
 453 |       [
 454 |         -90.738083,
 455 |         39.24781
 456 |       ],
 457 |       [
 458 |         -90.779343,
 459 |         39.296803
 460 |       ],
 461 |       [
 462 |         -90.850494,
 463 |         39.350452
 464 |       ],
 465 |       [
 466 |         -90.947891,
 467 |         39.400585
 468 |       ],
 469 |       [
 470 |         -91.036339,
 471 |         39.444412
 472 |       ],
 473 |       [
 474 |         -91.064384,
 475 |         39.473984
 476 |       ],
 477 |       [
 478 |         -91.093613,
 479 |         39.528927
 480 |       ],
 481 |       [
 482 |         -91.156189,
 483 |         39.552593
 484 |       ],
 485 |       [
 486 |         -91.203247,
 487 |         39.600021
 488 |       ],
 489 |       [
 490 |         -91.317665,
 491 |         39.685917
 492 |       ],
 493 |       [
 494 |         -91.367088,
 495 |         39.72464
 496 |       ],
 497 |       [
 498 |         -91.373421,
 499 |         39.761272
 500 |       ],
 501 |       [
 502 |         -91.381714,
 503 |         39.803772
 504 |       ],
 505 |       [
 506 |         -91.449188,
 507 |         39.863049
 508 |       ],
 509 |       [
 510 |         -91.450989,
 511 |         39.885242
 512 |       ],
 513 |       [
 514 |         -91.434052,
 515 |         39.901829
 516 |       ],
 517 |       [
 518 |         -91.430389,
 519 |         39.921837
 520 |       ],
 521 |       [
 522 |         -91.447243,
 523 |         39.946064
 524 |       ],
 525 |       [
 526 |         -91.487289,
 527 |         40.005753
 528 |       ],
 529 |       [
 530 |         -91.504005,
 531 |         40.066711
 532 |       ],
 533 |       [
 534 |         -91.516129,
 535 |         40.134544
 536 |       ],
 537 |       [
 538 |         -91.506546,
 539 |         40.200459
 540 |       ],
 541 |       [
 542 |         -91.498932,
 543 |         40.251377
 544 |       ],
 545 |       [
 546 |         -91.486694,
 547 |         40.309624
 548 |       ],
 549 |       [
 550 |         -91.448593,
 551 |         40.371902
 552 |       ],
 553 |       [
 554 |         -91.418816,
 555 |         40.386875
 556 |       ],
 557 |       [
 558 |         -91.385757,
 559 |         40.392361
 560 |       ],
 561 |       [
 562 |         -91.372757,
 563 |         40.402988
 564 |       ],
 565 |       [
 566 |         -91.385399,
 567 |         40.44725
 568 |       ],
 569 |       [
 570 |         -91.374794,
 571 |         40.503654
 572 |       ],
 573 |       [
 574 |         -91.382103,
 575 |         40.528496
 576 |       ],
 577 |       [
 578 |         -91.412872,
 579 |         40.547993
 580 |       ],
 581 |       [
 582 |         -91.411118,
 583 |         40.572971
 584 |       ],
 585 |       [
 586 |         -91.37561,
 587 |         40.603439
 588 |       ],
 589 |       [
 590 |         -91.262062,
 591 |         40.639545
 592 |       ],
 593 |       [
 594 |         -91.214912,
 595 |         40.643818
 596 |       ],
 597 |       [
 598 |         -91.162498,
 599 |         40.656311
 600 |       ],
 601 |       [
 602 |         -91.129158,
 603 |         40.682148
 604 |       ],
 605 |       [
 606 |         -91.119987,
 607 |         40.705402
 608 |       ],
 609 |       [
 610 |         -91.092751,
 611 |         40.761547
 612 |       ],
 613 |       [
 614 |         -91.088905,
 615 |         40.833729
 616 |       ],
 617 |       [
 618 |         -91.04921,
 619 |         40.879585
 620 |       ],
 621 |       [
 622 |         -90.983276,
 623 |         40.923927
 624 |       ],
 625 |       [
 626 |         -90.960709,
 627 |         40.950504
 628 |       ],
 629 |       [
 630 |         -90.954651,
 631 |         41.070362
 632 |       ],
 633 |       [
 634 |         -90.957787,
 635 |         41.104359
 636 |       ],
 637 |       [
 638 |         -90.990341,
 639 |         41.144371
 640 |       ],
 641 |       [
 642 |         -91.018257,
 643 |         41.165825
 644 |       ],
 645 |       [
 646 |         -91.05632,
 647 |         41.176258
 648 |       ],
 649 |       [
 650 |         -91.101524,
 651 |         41.231522
 652 |       ],
 653 |       [
 654 |         -91.102348,
 655 |         41.267818
 656 |       ],
 657 |       [
 658 |         -91.07328,
 659 |         41.334896
 660 |       ],
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 662 |         -91.055786,
 663 |         41.401379
 664 |       ],
 665 |       [
 666 |         -91.027489,
 667 |         41.423508
 668 |       ],
 669 |       [
 670 |         -91.000694,
 671 |         41.431084
 672 |       ],
 673 |       [
 674 |         -90.949654,
 675 |         41.421234
 676 |       ],
 677 |       [
 678 |         -90.844139,
 679 |         41.444622
 680 |       ],
 681 |       [
 682 |         -90.7799,
 683 |         41.449821
 684 |       ],
 685 |       [
 686 |         -90.708214,
 687 |         41.450062
 688 |       ],
 689 |       [
 690 |         -90.658791,
 691 |         41.462318
 692 |       ],
 693 |       [
 694 |         -90.6007,
 695 |         41.509586
 696 |       ],
 697 |       [
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 699 |         41.52597
 700 |       ],
 701 |       [
 702 |         -90.454994,
 703 |         41.527546
 704 |       ],
 705 |       [
 706 |         -90.434967,
 707 |         41.543579
 708 |       ],
 709 |       [
 710 |         -90.423004,
 711 |         41.567272
 712 |       ],
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 714 |         -90.348366,
 715 |         41.586849
 716 |       ],
 717 |       [
 718 |         -90.339348,
 719 |         41.602798
 720 |       ],
 721 |       [
 722 |         -90.341133,
 723 |         41.64909
 724 |       ],
 725 |       [
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 727 |         41.722736
 728 |       ],
 729 |       [
 730 |         -90.304886,
 731 |         41.756466
 732 |       ],
 733 |       [
 734 |         -90.25531,
 735 |         41.781738
 736 |       ],
 737 |       [
 738 |         -90.195839,
 739 |         41.806137
 740 |       ],
 741 |       [
 742 |         -90.154518,
 743 |         41.930775
 744 |       ],
 745 |       [
 746 |         -90.14267,
 747 |         41.983963
 748 |       ],
 749 |       [
 750 |         -90.150536,
 751 |         42.033428
 752 |       ],
 753 |       [
 754 |         -90.168098,
 755 |         42.061043
 756 |       ],
 757 |       [
 758 |         -90.166649,
 759 |         42.103745
 760 |       ],
 761 |       [
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 763 |         42.120502
 764 |       ],
 765 |       [
 766 |         -90.191574,
 767 |         42.122688
 768 |       ],
 769 |       [
 770 |         -90.230934,
 771 |         42.159721
 772 |       ],
 773 |       [
 774 |         -90.323601,
 775 |         42.197319
 776 |       ],
 777 |       [
 778 |         -90.367729,
 779 |         42.210209
 780 |       ],
 781 |       [
 782 |         -90.407173,
 783 |         42.242645
 784 |       ],
 785 |       [
 786 |         -90.417984,
 787 |         42.263924
 788 |       ],
 789 |       [
 790 |         -90.427681,
 791 |         42.340633
 792 |       ],
 793 |       [
 794 |         -90.441597,
 795 |         42.360073
 796 |       ],
 797 |       [
 798 |         -90.491043,
 799 |         42.388783
 800 |       ],
 801 |       [
 802 |         -90.563583,
 803 |         42.421837
 804 |       ],
 805 |       [
 806 |         -90.605827,
 807 |         42.46056
 808 |       ],
 809 |       [
 810 |         -90.648346,
 811 |         42.475643
 812 |       ],
 813 |       [
 814 |         -90.651772,
 815 |         42.494698
 816 |       ],
 817 |       [
 818 |         -90.638329,
 819 |         42.509361
 820 |       ],
 821 |       [
 822 |         -90.419975,
 823 |         42.508362
 824 |       ],
 825 |       [
 826 |         -89.923569,
 827 |         42.504108
 828 |       ],
 829 |       [
 830 |         -89.834618,
 831 |         42.50346
 832 |       ],
 833 |       [
 834 |         -89.400497,
 835 |         42.49749
 836 |       ],
 837 |       [
 838 |         -89.359444,
 839 |         42.497906
 840 |       ],
 841 |       [
 842 |         -88.939079,
 843 |         42.490864
 844 |       ],
 845 |       [
 846 |         -88.764954,
 847 |         42.490906
 848 |       ],
 849 |       [
 850 |         -88.70652,
 851 |         42.489655
 852 |       ],
 853 |       [
 854 |         -88.297897,
 855 |         42.49197
 856 |       ],
 857 |       [
 858 |         -88.194702,
 859 |         42.489613
 860 |       ],
 861 |       [
 862 |         -87.79731,
 863 |         42.489132
 864 |       ],
 865 |       [
 866 |         -87.836945,
 867 |         42.314213
 868 |       ],
 869 |       [
 870 |         -87.760239,
 871 |         42.156456
 872 |       ],
 873 |       [
 874 |         -87.670547,
 875 |         42.059822
 876 |       ],
 877 |       [
 878 |         -87.612625,
 879 |         41.847332
 880 |       ],
 881 |       [
 882 |         -87.529861,
 883 |         41.723591
 884 |       ],
 885 |       [
 886 |         -87.532646,
 887 |         41.469715
 888 |       ],
 889 |       [
 890 |         -87.532448,
 891 |         41.301304
 892 |       ],
 893 |       [
 894 |         -87.531731,
 895 |         41.173756
 896 |       ],
 897 |       [
 898 |         -87.532021,
 899 |         41.00993
 900 |       ],
 901 |       [
 902 |         -87.532669,
 903 |         40.745411
 904 |       ],
 905 |       [
 906 |         -87.53717,
 907 |         40.49461
 908 |       ],
 909 |       [
 910 |         -87.535675,
 911 |         40.483246
 912 |       ],
 913 |       [
 914 |         -87.535339,
 915 |         40.166195
 916 |       ],
 917 |       [
 918 |         -87.535774,
 919 |         39.887302
 920 |       ],
 921 |       [
 922 |         -87.535576,
 923 |         39.609341
 924 |       ],
 925 |       [
 926 |         -87.538567,
 927 |         39.477448
 928 |       ],
 929 |       [
 930 |         -87.540215,
 931 |         39.350525
 932 |       ],
 933 |       [
 934 |         -87.597664,
 935 |         39.338268
 936 |       ],
 937 |       [
 938 |         -87.625237,
 939 |         39.307404
 940 |       ],
 941 |       [
 942 |         -87.610619,
 943 |         39.297661
 944 |       ],
 945 |       [
 946 |         -87.615799,
 947 |         39.281418
 948 |       ],
 949 |       [
 950 |         -87.606895,
 951 |         39.258163
 952 |       ],
 953 |       [
 954 |         -87.584564,
 955 |         39.248753
 956 |       ],
 957 |       [
 958 |         -87.588593,
 959 |         39.208466
 960 |       ],
 961 |       [
 962 |         -87.594208,
 963 |         39.198128
 964 |       ],
 965 |       [
 966 |         -87.607925,
 967 |         39.196068
 968 |       ],
 969 |       [
 970 |         -87.644257,
 971 |         39.168507
 972 |       ],
 973 |       [
 974 |         -87.670326,
 975 |         39.146679
 976 |       ],
 977 |       [
 978 |         -87.659454,
 979 |         39.130653
 980 |       ],
 981 |       [
 982 |         -87.662262,
 983 |         39.113468
 984 |       ],
 985 |       [
 986 |         -87.631668,
 987 |         39.103943
 988 |       ],
 989 |       [
 990 |         -87.630867,
 991 |         39.088974
 992 |       ],
 993 |       [
 994 |         -87.612007,
 995 |         39.084606
 996 |       ],
 997 |       [
 998 |         -87.58532,
 999 |         39.062435
1000 |       ],
1001 |       [
1002 |         -87.581749,
1003 |         38.995743
1004 |       ],
1005 |       [
1006 |         -87.591858,
1007 |         38.994083
1008 |       ],
1009 |       [
1010 |         -87.547905,
1011 |         38.977077
1012 |       ],
1013 |       [
1014 |         -87.53347,
1015 |         38.963703
1016 |       ],
1017 |       [
1018 |         -87.530182,
1019 |         38.931919
1020 |       ],
1021 |       [
1022 |         -87.5392,
1023 |         38.904861
1024 |       ],
1025 |       [
1026 |         -87.559059,
1027 |         38.869812
1028 |       ],
1029 |       [
1030 |         -87.550507,
1031 |         38.857891
1032 |       ],
1033 |       [
1034 |         -87.507889,
1035 |         38.795559
1036 |       ],
1037 |       [
1038 |         -87.519028,
1039 |         38.776699
1040 |       ],
1041 |       [
1042 |         -87.508003,
1043 |         38.769722
1044 |       ],
1045 |       [
1046 |         -87.508316,
1047 |         38.736633
1048 |       ],
1049 |       [
1050 |         -87.543892,
1051 |         38.685974
1052 |       ],
1053 |       [
1054 |         -87.588478,
1055 |         38.672169
1056 |       ],
1057 |       [
1058 |         -87.625191,
1059 |         38.642811
1060 |       ],
1061 |       [
1062 |         -87.628647,
1063 |         38.622917
1064 |       ],
1065 |       [
1066 |         -87.619827,
1067 |         38.599209
1068 |       ],
1069 |       [
1070 |         -87.640594,
1071 |         38.593178
1072 |       ],
1073 |       [
1074 |         -87.652855,
1075 |         38.573872
1076 |       ],
1077 |       [
1078 |         -87.672943,
1079 |         38.547424
1080 |       ],
1081 |       [
1082 |         -87.65139,
1083 |         38.515369
1084 |       ],
1085 |       [
1086 |         -87.653534,
1087 |         38.500443
1088 |       ],
1089 |       [
1090 |         -87.679909,
1091 |         38.504005
1092 |       ],
1093 |       [
1094 |         -87.692818,
1095 |         38.481533
1096 |       ],
1097 |       [
1098 |         -87.756096,
1099 |         38.466125
1100 |       ],
1101 |       [
1102 |         -87.758659,
1103 |         38.457096
1104 |       ],
1105 |       [
1106 |         -87.738953,
1107 |         38.44548
1108 |       ],
1109 |       [
1110 |         -87.748428,
1111 |         38.417965
1112 |       ],
1113 |       [
1114 |         -87.784019,
1115 |         38.378124
1116 |       ],
1117 |       [
1118 |         -87.834503,
1119 |         38.352524
1120 |       ],
1121 |       [
1122 |         -87.850082,
1123 |         38.286098
1124 |       ],
1125 |       [
1126 |         -87.863007,
1127 |         38.285362
1128 |       ],
1129 |       [
1130 |         -87.874039,
1131 |         38.316788
1132 |       ],
1133 |       [
1134 |         -87.883446,
1135 |         38.315552
1136 |       ],
1137 |       [
1138 |         -87.888466,
1139 |         38.300659
1140 |       ],
1141 |       [
1142 |         -87.914108,
1143 |         38.281048
1144 |       ],
1145 |       [
1146 |         -87.913651,
1147 |         38.302345
1148 |       ],
1149 |       [
1150 |         -87.925919,
1151 |         38.304771
1152 |       ],
1153 |       [
1154 |         -87.980019,
1155 |         38.241085
1156 |       ],
1157 |       [
1158 |         -87.986008,
1159 |         38.234814
1160 |       ],
1161 |       [
1162 |         -87.977928,
1163 |         38.200714
1164 |       ],
1165 |       [
1166 |         -87.932289,
1167 |         38.171131
1168 |       ],
1169 |       [
1170 |         -87.931992,
1171 |         38.157528
1172 |       ],
1173 |       [
1174 |         -87.950569,
1175 |         38.136913
1176 |       ],
1177 |       [
1178 |         -87.973503,
1179 |         38.13176
1180 |       ],
1181 |       [
1182 |         -88.018547,
1183 |         38.103302
1184 |       ],
1185 |       [
1186 |         -88.012329,
1187 |         38.092346
1188 |       ],
1189 |       [
1190 |         -87.964867,
1191 |         38.096748
1192 |       ],
1193 |       [
1194 |         -87.975296,
1195 |         38.073307
1196 |       ],
1197 |       [
1198 |         -88.034729,
1199 |         38.054085
1200 |       ],
1201 |       [
1202 |         -88.043091,
1203 |         38.04512
1204 |       ],
1205 |       [
1206 |         -88.041473,
1207 |         38.038303
1208 |       ],
1209 |       [
1210 |         -88.021698,
1211 |         38.033531
1212 |       ],
1213 |       [
1214 |         -88.029213,
1215 |         38.008236
1216 |       ],
1217 |       [
1218 |         -88.021706,
1219 |         37.975056
1220 |       ],
1221 |       [
1222 |         -88.042511,
1223 |         37.956264
1224 |       ],
1225 |       [
1226 |         -88.041771,
1227 |         37.934498
1228 |       ],
1229 |       [
1230 |         -88.064621,
1231 |         37.929783
1232 |       ],
1233 |       [
1234 |         -88.078941,
1235 |         37.944
1236 |       ],
1237 |       [
1238 |         -88.084,
1239 |         37.92366
1240 |       ],
1241 |       [
1242 |         -88.030441,
1243 |         37.917591
1244 |       ],
1245 |       [
1246 |         -88.026588,
1247 |         37.905758
1248 |       ],
1249 |       [
1250 |         -88.044868,
1251 |         37.896004
1252 |       ],
1253 |       [
1254 |         -88.100082,
1255 |         37.90617
1256 |       ],
1257 |       [
1258 |         -88.101456,
1259 |         37.895306
1260 |       ],
1261 |       [
1262 |         -88.075737,
1263 |         37.867809
1264 |       ],
1265 |       [
1266 |         -88.034241,
1267 |         37.843746
1268 |       ],
1269 |       [
1270 |         -88.042137,
1271 |         37.827522
1272 |       ],
1273 |       [
1274 |         -88.089264,
1275 |         37.831249
1276 |       ],
1277 |       [
1278 |         -88.086029,
1279 |         37.817612
1280 |       ],
1281 |       [
1282 |         -88.035576,
1283 |         37.805683
1284 |       ],
1285 |       [
1286 |         -88.072472,
1287 |         37.735401
1288 |       ],
1289 |       [
1290 |         -88.133636,
1291 |         37.700745
1292 |       ],
1293 |       [
1294 |         -88.15937,
1295 |         37.660686
1296 |       ],
1297 |       [
1298 |         -88.157631,
1299 |         37.628479
1300 |       ],
1301 |       [
1302 |         -88.134171,
1303 |         37.583572
1304 |       ],
1305 |       [
1306 |         -88.071564,
1307 |         37.51099
1308 |       ]
1309 |     ]
1310 |   ]]
1311 | }
1312 | 


--------------------------------------------------------------------------------