├── .gitignore ├── .npmignore ├── .travis.yml ├── LICENSE ├── README.md ├── index.js ├── lib └── timezones.json ├── package.json ├── regenerate ├── check-timezones.js ├── quantize.js └── regenerate-timezones.sh ├── test └── timespace.test.js └── util └── map.js /.gitignore: -------------------------------------------------------------------------------- 1 | # Logs 2 | logs 3 | *.log 4 | npm-debug.log* 5 | 6 | # Runtime data 7 | pids 8 | *.pid 9 | *.seed 10 | 11 | # Directory for instrumented libs generated by jscoverage/JSCover 12 | lib-cov 13 | 14 | # Coverage directory used by tools like istanbul 15 | coverage 16 | 17 | # nyc test coverage 18 | .nyc_output 19 | 20 | # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) 21 | .grunt 22 | 23 | # node-waf configuration 24 | .lock-wscript 25 | 26 | # Compiled binary addons (http://nodejs.org/api/addons.html) 27 | build/Release 28 | 29 | # Dependency directories 30 | node_modules 31 | jspm_packages 32 | 33 | # Optional npm cache directory 34 | .npm 35 | 36 | # Optional REPL history 37 | .node_repl_history 38 | 39 | .DS_Store 40 | .bk 41 | .bk2 -------------------------------------------------------------------------------- /.npmignore: -------------------------------------------------------------------------------- 1 | timezones.geojson 2 | timezones.geojson.gz 3 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: node_js 2 | node_js: 3 | - "4" -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | The MIT License (MIT) 2 | 3 | Copyright (c) 2016 Morgan Herlocker 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # timespace [![Build Status](https://travis-ci.org/mapbox/timespace.svg?branch=master)](https://travis-ci.org/mapbox/timespace) 2 | Compute fuzzy local time from a location. The default accuracy is [zoom level 8](http://wiki.openstreetmap.org/wiki/Zoom_levels). See ["Regenerate timezones.json"](https://github.com/mapbox/timespace#regenerate-timezonesjson) section for instructions on how to change accuracy. 3 | 4 | Timezone data is from https://github.com/evansiroky/timezone-boundary-builder/. 5 | 6 | ## Install 7 | ``` 8 | npm install @mapbox/timespace 9 | ``` 10 | 11 | ## Test 12 | ``` 13 | npm run test 14 | ``` 15 | 16 | ## Use 17 | 18 | ### Functions 19 | 20 | ```js 21 | var ts = require('@mapbox/timespace'); 22 | 23 | var timestamp = Date.now(); 24 | var point = [-122.27783203125, 37.84015683604136]; 25 | var time = ts.getFuzzyLocalTimeFromPoint(timestamp, point); 26 | //=> (a `moment-timezone` object – see https://momentjs.com/timezone/) 27 | 28 | 29 | var tile = [41, 98, 8]; // the tile [x, y, z] whose timezone we want to know 30 | var timezone1 = ts.getFuzzyTimezoneFromTile(tile); 31 | //=> 'America/Los_Angeles' 32 | 33 | 34 | var quadkey = '02301021'; // the quadkey whose timezone we want to know 35 | var timezone2 = ts.getFuzzyTimezoneFromQuadkey(quadkey); 36 | //=> 'America/Los_Angeles' 37 | ``` 38 | 39 | `./lib/timezones.json` file contains the timezone name of every z8 tile that contains land. 40 | 41 | 42 | If a tile/quadkey with zoom levels > 8 is passed into timespace functions, the timezone of its z8 parent is returned. 43 | 44 | If a tile/quadkey with zoom levels < 8 is passed into timespace functions, the most popular timezone amongst its z8 children is returned. 45 | 46 | 47 | ## Regenerate timezones.json 48 | 49 | To update timezone.json, 50 | 1. find the link address of the latest timezones.shapefile.zip release from https://github.com/evansiroky/timezone-boundary-builder/releases, 51 | 2. replace the link address in [this line](https://github.com/mapbox/timespace/blob/master/regenerate/regenerate-timezones.sh#L1) with the the link from step 1 52 | 3. run `npm run regenerate` 53 | 4. run `npm run test` to verify the new timezones.json file is ok 54 | 55 | 56 | To generate timezone.json for another zoom level: 57 | 1. change [the number in this line](https://github.com/mapbox/timespace/blob/master/regenerate/regenerate-timezones.sh#L8) to the desired zoom level, 58 | 2. run `npm run regenerate` 59 | 3. run `npm run test` to verify the new timezones.json file is ok 60 | 61 | -------------------------------------------------------------------------------- /index.js: -------------------------------------------------------------------------------- 1 | var tiles = require('./lib/timezones.json'); 2 | var tilebelt = require('@mapbox/tilebelt'); 3 | var moment = require('moment-timezone'); 4 | var ss = require('simple-statistics'); 5 | 6 | var z = Object.keys(tiles)[0].split('/').map(Number)[2]; 7 | 8 | module.exports = { 9 | getFuzzyLocalTimeFromPoint: getFuzzyLocalTimeFromPoint, 10 | getFuzzyTimezoneFromTile: getFuzzyTimezoneFromTile, 11 | getFuzzyTimezoneFromQuadkey: getFuzzyTimezoneFromQuadkey, 12 | _getParent: _getParent, // expose for testing 13 | _getChildren: _getChildren // expose for testing 14 | }; 15 | 16 | /** 17 | * Returns the local time at the point of interest. 18 | * @param {Integer} timestamp a unix timestamp 19 | * @param {Array} point a [lng, lat] point of interest 20 | * @return {Object} a moment-timezone object 21 | */ 22 | function getFuzzyLocalTimeFromPoint(timestamp, point) { 23 | var tile = tilebelt.pointToTile(point[0], point[1], z).join('/'); 24 | var locale = tiles[tile]; 25 | 26 | if (locale) return moment.tz(new Date(timestamp), locale); 27 | else return undefined; 28 | } 29 | 30 | /** 31 | * Retrieves the timezone of the tile of interest at z8-level accuracy. 32 | * @param {Array} tile [x, y, z] coordinate of a tile 33 | * @return {String} timezone for the tile 34 | */ 35 | function getFuzzyTimezoneFromTile(tile) { 36 | if (tile[2] === z) { 37 | var key = tile.join('/'); 38 | if (key in tiles) return tiles[key]; 39 | else throw new Error('tile not found'); 40 | 41 | } else if (tile[2] > z) { 42 | // higher zoom level (9, 10, 11, ...) 43 | key = _getParent(tile).join('/'); 44 | if (key in tiles) return tiles[key]; 45 | else throw new Error('tile not found'); 46 | 47 | } else { 48 | // lower zoom level (..., 5, 6, 7) 49 | var children = _getChildren(tile); 50 | var votes = []; // list of timezone abbrevations 51 | var abbrs = {}; // abbrevation to full name lookup table 52 | children.forEach(function(child) { 53 | key = child.join('/'); 54 | if (key in tiles) { 55 | var tz = tiles[key]; // timezone name 56 | 57 | // Need to use timezone abbreviation becuase e.g. America/Los_Angeles 58 | // and America/Vancouver are the same. Use a time to determine the 59 | // abbreviation, in case two similar tz have slightly different 60 | // daylight savings schedule. 61 | var abbr = moment.tz(Date.now(), tz)._z.abbrs[0]; 62 | votes.push(abbr); 63 | abbrs[abbr] = tz; 64 | } 65 | }); 66 | 67 | if (votes.length > 1) return abbrs[ss.mode(votes)]; 68 | else throw new Error('tile not found'); 69 | } 70 | } 71 | 72 | /** 73 | * Retrieves the timezone of the quadkey of interest at z8-level accuracy. 74 | * @param {Array} quadkey a quadkey 75 | * @return {String} timezone for the quadkey 76 | */ 77 | function getFuzzyTimezoneFromQuadkey(quadkey) { 78 | var tile = tilebelt.quadkeyToTile(quadkey); 79 | return getFuzzyTimezoneFromTile(tile); 80 | } 81 | 82 | /** 83 | * [private function] 84 | */ 85 | function _getParent(tile) { 86 | if (tile[2] < z) throw new Error('input tile zoom < ' + z); 87 | if (tile[2] > z) return _getParent(tilebelt.getParent(tile)); 88 | else return tile; 89 | } 90 | 91 | /** 92 | * [private function] 93 | */ 94 | function _getChildren(tile) { 95 | if (tile[2] > z) throw new Error('input tile zoom > ' + z); 96 | if (tile[2] === z) return [tile]; 97 | 98 | var children = tilebelt.getChildren(tile); 99 | return _getChildren(children[0]) 100 | .concat(_getChildren(children[1])) 101 | .concat(_getChildren(children[2])) 102 | .concat(_getChildren(children[3])); 103 | } 104 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "@mapbox/timespace", 3 | "version": "2.0.3", 4 | "description": "compute fuzzy local time from a location", 5 | "main": "index.js", 6 | "dependencies": { 7 | "@mapbox/tilebelt": "^1.0.1", 8 | "@mapbox/tile-cover": "^3.0.2", 9 | "d3-queue": "^3.0.3", 10 | "mkdirp": "^0.5.1", 11 | "moment": "^2.12.0", 12 | "moment-timezone": "^0.5.5", 13 | "rimraf": "^2.5.4", 14 | "simple-statistics": "^2.3.0", 15 | "tile-cover": "^3.0.1" 16 | }, 17 | "devDependencies": { 18 | "eslint": "^2.5.1", 19 | "eslint-config-mourner": "^2.0.0", 20 | "tap": "^5.7.0", 21 | "turf": "^2.0.2" 22 | }, 23 | "scripts": { 24 | "test": "npm run lint; tap -R spec test/*.test.js;", 25 | "lint": "eslint *.js --fix", 26 | "regenerate": "regenerate/regenerate-timezones.sh" 27 | }, 28 | "repository": { 29 | "type": "git", 30 | "url": "git+https://github.com/mapbox/timespace.git" 31 | }, 32 | "keywords": [ 33 | "localization", 34 | "time", 35 | "timezone", 36 | "geo" 37 | ], 38 | "author": "morganherlocker", 39 | "license": "MIT", 40 | "bugs": { 41 | "url": "https://github.com/mapbox/timespace/issues" 42 | }, 43 | "homepage": "https://github.com/mapbox/timespace#readme", 44 | "eslintConfig": { 45 | "extends": "mourner", 46 | "rules": { 47 | "strict": "off", 48 | "indent": [ 49 | 2, 50 | 2 51 | ], 52 | "camelcase": 0, 53 | "space-before-function-paren": [ 54 | 2, 55 | "never" 56 | ] 57 | } 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /regenerate/check-timezones.js: -------------------------------------------------------------------------------- 1 | /** 2 | * Removes timezones that are not supported by moment-timezone. 3 | * 4 | * USE: 5 | * node check-timezones.js timezones.geojson.gz timezones-cleaned.geojson.gz 6 | */ 7 | 8 | var fs = require('fs'); 9 | var zlib = require('zlib'); 10 | var moment = require('moment-timezone'); 11 | 12 | var datafile = process.argv[2]; 13 | var outfile = process.argv[3]; 14 | 15 | if (!datafile) throw new Error('Timezone geojson file is required.'); 16 | if (!outfile) throw new Error('Output filename is required.'); 17 | 18 | var knownIssues = { 19 | 'America/Monterey': 'America/Monterrey' 20 | }; 21 | 22 | var buffer = fs.readFileSync(datafile); 23 | 24 | zlib.gunzip(buffer, function(err, data) { 25 | if (err) throw err; 26 | 27 | var zones = JSON.parse(data); 28 | 29 | // filter out timezones not supported by moment-timezone 30 | zones.features = zones.features.filter(function(zone) { 31 | 32 | // check if tzid is in `moment-timezone` library 33 | if (moment.tz.zone(zone.properties.tzid) === null) { 34 | 35 | if (zone.properties.tzid in knownIssues) { 36 | // if known issue, replace with the correct tzid 37 | var wrongTz = zone.properties.tzid; 38 | var correctTz = knownIssues[zone.properties.tzid]; 39 | zone.properties.tzid = correctTz; 40 | console.log('Fixed timezone: ' + wrongTz + ' -> ' + correctTz); 41 | return true; 42 | 43 | } else { 44 | // if issue not known, remove from geojson 45 | console.log('Filtered out bad timezone ' + zone.properties.tzid); 46 | return false; 47 | } 48 | } else return true; 49 | }); 50 | 51 | zlib.gzip(JSON.stringify(zones), function(err, result) { 52 | if (err) throw err; 53 | 54 | fs.writeFileSync(outfile, result); 55 | }); 56 | }); 57 | 58 | -------------------------------------------------------------------------------- /regenerate/quantize.js: -------------------------------------------------------------------------------- 1 | /** 2 | * Qunatize timezone. 3 | * 4 | * USE: 5 | * node quantize.js 8 # fuzzy z8 timezones 6 | */ 7 | 8 | var fs = require('fs'); 9 | var path = require('path'); 10 | var cover = require('tile-cover'); 11 | var tilebelt = require('@mapbox/tilebelt'); 12 | var turf = require('turf'); 13 | var d3 = require('d3-queue'); 14 | var mkdirp = require('mkdirp'); 15 | var rimraf = require('rimraf'); 16 | var moment = require('moment-timezone'); 17 | var zlib = require('zlib'); 18 | var z = +process.argv[2]; 19 | 20 | // for tracking progress 21 | var zonesDone = 0; 22 | var totalZones = 0; 23 | 24 | var tiles = {}; 25 | var tzNames = {}; 26 | 27 | 28 | // load timezone polygons 29 | var timezoneBuffer = fs.readFileSync(path.join(__dirname, '../timezones.geojson.gz')); 30 | zlib.gunzip(timezoneBuffer, function(err, data) { 31 | if (err) throw err; 32 | 33 | 34 | zones = JSON.parse(data); 35 | 36 | zones = zones.features.filter(function(zone) { 37 | return moment.tz.zone(zone.properties.tzid) !== null; 38 | }); 39 | totalZones = zones.length; 40 | console.info('No. of timezones:', totalZones); 41 | 42 | 43 | // find which z7 tiles these these zones cover 44 | var q = d3.queue(); 45 | zones.forEach(function(zone) { 46 | q.defer(coverTile, zone) 47 | }); 48 | 49 | // output {tile: timezone} 50 | q.awaitAll(function (err) { 51 | if (err) { 52 | console.error(err) 53 | throw err; 54 | } 55 | 56 | Object.keys(tiles).forEach(function(tile) { 57 | tiles[tile] = tiles[tile].name; 58 | }); 59 | 60 | fs.writeFileSync(path.join(__dirname, '../lib/timezones.json'), JSON.stringify(tiles)); 61 | }); 62 | 63 | }); 64 | 65 | 66 | function coverTile(zone, done) { 67 | var opts = {min_zoom: z, max_zoom: z}; 68 | 69 | cover.tiles(zone.geometry, opts).forEach(function(tile) { 70 | var id = tile.join('/'); 71 | var poly = turf.polygon(tilebelt.tileToGeoJSON(tile).coordinates); 72 | 73 | try { 74 | var overlap = turf.area(turf.intersect(zone, poly)); 75 | if (!tiles[id] || tiles[id].overlap < overlap) 76 | tiles[id] = {name: zone.properties.tzid, overlap: overlap}; 77 | } catch (e) { 78 | console.log('Error detected: ' + e.message + '; zone: ' + zone.properties.tzid + '; tile: ' + id); 79 | } 80 | 81 | }); 82 | 83 | zonesDone++; 84 | console.info('Processed', zonesDone + '/' + totalZones) 85 | 86 | done(); 87 | } 88 | -------------------------------------------------------------------------------- /regenerate/regenerate-timezones.sh: -------------------------------------------------------------------------------- 1 | curl -L https://github.com/evansiroky/timezone-boundary-builder/releases/download/2017a/timezones.shapefile.zip -o tz_world_mp.zip; 2 | unzip tz_world_mp.zip; 3 | rm tz_world_mp.zip; 4 | ogr2ogr -f GeoJSON timezones.geojson dist/combined_shapefile.shp; 5 | rm -rf dist; 6 | gzip -f timezones.geojson; 7 | node ./regenerate/check-timezones.js timezones.geojson.gz timezones.geojson.gz; 8 | node ./regenerate/quantize.js 8 9 | rm timezones.geojson.gz; -------------------------------------------------------------------------------- /test/timespace.test.js: -------------------------------------------------------------------------------- 1 | var timezones = require('../lib/timezones.json'); 2 | var test = require('tap').test; 3 | var moment = require('moment-timezone'); 4 | var ts = require('../'); 5 | 6 | var z = Object.keys(timezones)[0].split('/').map(Number)[2]; 7 | 8 | test('get parent', function(t) { 9 | var tile = [344063, 802816, 21]; 10 | var actual = ts._getParent(tile); 11 | 12 | if (z === 8) { 13 | t.deepEqual(actual, [41, 98, 8], 'finds tile\'s z8 parent'); 14 | } else { 15 | t.equal(actual[2], z); 16 | } 17 | 18 | t.end(); 19 | }); 20 | 21 | test('get children', function(t) { 22 | if (z === 8) { 23 | var tile = [20, 49, 7]; 24 | var expected = [[40, 98, 8], [41, 98, 8], [41, 99, 8], [40, 99, 8]]; 25 | var actual = ts._getChildren(tile); 26 | t.deepequal(actual, expected, 'finds tile\'s z8 children'); 27 | 28 | tile = [10, 24, 6]; 29 | actual = ts._getChildren(tile); 30 | t.equal(actual.length, 16, 'finds 16 children') 31 | actual.forEach(function(child) { 32 | t.equal(child[2], 8, 'finds z8 child') 33 | }); 34 | } 35 | 36 | t.end(); 37 | }); 38 | 39 | test('check zone', function(t) { 40 | var timestamp = 1472168219655; 41 | var point = [-122.27783203125, 37.84015683604136]; 42 | var tile = [41, 98, 8]; 43 | var quadkey = '02301021'; 44 | var quadkey2 = '02301023'; 45 | 46 | if (z === 8) { 47 | var expected = moment.tz(new Date(timestamp), 'America/Los_Angeles'); 48 | t.deepequal(ts.getFuzzyLocalTimeFromPoint(timestamp, point), expected); 49 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 50 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 51 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey2), 'America/Los_Angeles'); 52 | } else { 53 | t.true(ts.getFuzzyLocalTimeFromPoint(timestamp, point)._z.name.indexOf('/') > 0); 54 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 55 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 56 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey2).indexOf('/') > 0); 57 | } 58 | 59 | t.end(); 60 | }); 61 | 62 | test('check lower zoom levels', function(t) { 63 | // z7 64 | var quadkeyZ7 = '0230102'; 65 | var quadkeyZ6 = '023010'; 66 | var quadkeyZ5 = '02301'; 67 | 68 | if (z === 8) { 69 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkeyZ7), 'America/Los_Angeles'); 70 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkeyZ6), 'America/Los_Angeles'); 71 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkeyZ5), 'America/Los_Angeles'); 72 | } else { 73 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkeyZ7).indexOf('/') > 0); 74 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkeyZ6).indexOf('/') > 0); 75 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkeyZ5).indexOf('/') > 0); 76 | } 77 | 78 | t.end(); 79 | }); 80 | 81 | 82 | test('check higher zoom levels', function(t) { 83 | var tile, quadkey; 84 | 85 | // z9 86 | tile = [83, 196, 9]; 87 | quadkey = '023010211'; 88 | if (z === 8) { 89 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 90 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 91 | } else { 92 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 93 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 94 | } 95 | 96 | // z10 97 | tile = [167, 392, 10]; 98 | quadkey = '0230102111'; 99 | if (z === 8) { 100 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 101 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 102 | } else { 103 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 104 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 105 | } 106 | 107 | // z11 108 | tile = [355, 784, 11]; 109 | quadkey = '02301021111'; 110 | if (z === 8) { 111 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 112 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 113 | } else { 114 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 115 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 116 | } 117 | 118 | // z12 119 | tile = [671, 1568, 12]; 120 | quadkey = '023010211111'; 121 | if (z === 8) { 122 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 123 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 124 | } else { 125 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 126 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 127 | } 128 | 129 | // z13 130 | tile = [1343, 3136, 13]; 131 | quadkey = '0230102111111'; 132 | if (z === 8) { 133 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 134 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 135 | } else { 136 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 137 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 138 | } 139 | 140 | // z14 141 | tile = [2687, 6272, 14]; 142 | quadkey = '02301021111111'; 143 | if (z === 8) { 144 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 145 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 146 | } else { 147 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 148 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 149 | } 150 | 151 | // z15 152 | tile = [5375, 12544, 15]; 153 | quadkey = '023010211111111'; 154 | if (z === 8) { 155 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 156 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 157 | } else { 158 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 159 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 160 | } 161 | 162 | // z16 163 | tile = [10751, 25088, 16]; 164 | quadkey = '0230102111111111'; 165 | if (z === 8) { 166 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 167 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 168 | } else { 169 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 170 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 171 | } 172 | 173 | // z17 174 | tile = [21503, 50176, 17]; 175 | quadkey = '0230102111111111'; 176 | if (z === 8) { 177 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 178 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 179 | } else { 180 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 181 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 182 | } 183 | 184 | // z18 185 | tile = [43007, 100352, 18]; 186 | quadkey = '02301021111111111'; 187 | if (z === 8) { 188 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 189 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 190 | } else { 191 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 192 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 193 | } 194 | 195 | // z19 196 | tile = [86015, 200704, 19]; 197 | quadkey = '023010211111111111'; 198 | if (z === 8) { 199 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 200 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 201 | } else { 202 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 203 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 204 | } 205 | 206 | // z20 207 | tile = [172031, 401408, 20]; 208 | quadkey = '0230102111111111111'; 209 | if (z === 8) { 210 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 211 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 212 | } else { 213 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 214 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 215 | } 216 | 217 | // z21 218 | tile = [344063, 802816, 21]; 219 | quadkey = '02301021111111111111'; 220 | if (z === 8) { 221 | t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles'); 222 | t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles'); 223 | } else { 224 | t.true(ts.getFuzzyTimezoneFromTile(tile).indexOf('/') > 0); 225 | t.true(ts.getFuzzyTimezoneFromQuadkey(quadkey).indexOf('/') > 0); 226 | } 227 | 228 | t.end(); 229 | }); 230 | -------------------------------------------------------------------------------- /util/map.js: -------------------------------------------------------------------------------- 1 | /** 2 | * USE: 3 | * node map.js | tippecanoe -z8 -f -o zones.mbtiles 4 | */ 5 | 6 | var path = require('path'); 7 | var cover = require('tile-cover'); 8 | var tilebelt = require('@mapbox/tilebelt'); 9 | var turf = require('turf'); 10 | 11 | var timezones = require('../lib/timezones.json'); 12 | 13 | var fc = turf.featurecollection([]); 14 | 15 | Object.keys(timezones).forEach(function(timezone){ 16 | var poly = turf.polygon(tilebelt.tileToGeoJSON(timezone.split('/').map(Number)).coordinates); 17 | poly.properties.zone = timezones[timezone] 18 | console.log(JSON.stringify(poly)) 19 | }); 20 | --------------------------------------------------------------------------------