www/plugins/gis/lib/leaflet/plugins/leaflet-providers.js

   1 (function (root, factory) {
   2         if (typeof define === 'function' && define.amd) {
   3                 // AMD. Register as an anonymous module.
   4                 define(['leaflet'], factory);
   5         } else if (typeof modules === 'object' && module.exports) {
   6                 // define a Common JS module that relies on 'leaflet'
   7                 module.exports = factory(require('leaflet'));
   8         } else {
   9                 // Assume Leaflet is loaded into global object L already
  10                 factory(L);
  11         }
  12 }(this, function (L) {
  13         'use strict';
  14
  15         L.TileLayer.Provider = L.TileLayer.extend({
  16                 initialize: function (arg, options) {
  17                         var providers = L.TileLayer.Provider.providers;
  18
  19                         var parts = arg.split('.');
  20
  21                         var providerName = parts[0];
  22                         var variantName = parts[1];
  23
  24                         if (!providers[providerName]) {
  25                                 throw 'No such provider (' + providerName + ')';
  26                         }
  27
  28                         var provider = {
  29                                 url: providers[providerName].url,
  30                                 options: providers[providerName].options
  31                         };
  32
  33                         // overwrite values in provider from variant.
  34                         if (variantName && 'variants' in providers[providerName]) {
  35                                 if (!(variantName in providers[providerName].variants)) {
  36                                         throw 'No such variant of ' + providerName + ' (' + variantName + ')';
  37                                 }
  38                                 var variant = providers[providerName].variants[variantName];
  39                                 var variantOptions;
  40                                 if (typeof variant === 'string') {
  41                                         variantOptions = {
  42                                                 variant: variant
  43                                         };
  44                                 } else {
  45                                         variantOptions = variant.options;
  46                                 }
  47                                 provider = {
  48                                         url: variant.url || provider.url,
  49                                         options: L.Util.extend({}, provider.options, variantOptions)
  50                                 };
  51                         }
  52
  53                         var forceHTTP = window.location.protocol === 'file:' || provider.options.forceHTTP;
  54                         if (provider.url.indexOf('//') === 0 && forceHTTP) {
  55                                 provider.url = 'http:' + provider.url;
  56                         }
  57
  58                         // If retina option is set
  59                         if (provider.options.retina) {
  60                                 // Check retina screen
  61                                 if (options.detectRetina && L.Browser.retina) {
  62                                         // The retina option will be active now
  63                                         // But we need to prevent Leaflet retina mode
  64                                         options.detectRetina = false;
  65                                 } else {
  66                                         // No retina, remove option
  67                                         provider.options.retina = '';
  68                                 }
  69                         }
  70
  71                         // replace attribution placeholders with their values from toplevel provider attribution,
  72                         // recursively
  73                         var attributionReplacer = function (attr) {
  74                                 if (attr.indexOf('{attribution.') === -1) {
  75                                         return attr;
  76                                 }
  77                                 return attr.replace(/\{attribution.(\w*)\}/,
  78                                         function (match, attributionName) {
  79                                                 return attributionReplacer(providers[attributionName].options.attribution);
  80                                         }
  81                                 );
  82                         };
  83                         provider.options.attribution = attributionReplacer(provider.options.attribution);
  84
  85                         // Compute final options combining provider options with any user overrides
  86                         var layerOpts = L.Util.extend({}, provider.options, options);
  87                         L.TileLayer.prototype.initialize.call(this, provider.url, layerOpts);
  88                 }
  89         });
  90
  91         /**
  92          * Definition of providers.
  93          * see http://leafletjs.com/reference.html#tilelayer for options in the options map.
  94          */
  95
  96         L.TileLayer.Provider.providers = {
  97                 OpenStreetMap: {
  98                         url: '//{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
  99                         options: {
 100                                 maxZoom: 19,
 101                                 attribution:
 102                                         '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
 103                         },
 104                         variants: {
 105                                 Mapnik: {},
 106                                 BlackAndWhite: {
 107                                         url: 'http://{s}.tiles.wmflabs.org/bw-mapnik/{z}/{x}/{y}.png',
 108                                         options: {
 109                                                 maxZoom: 18
 110                                         }
 111                                 },
 112                                 DE: {
 113                                         url: 'http://{s}.tile.openstreetmap.de/tiles/osmde/{z}/{x}/{y}.png',
 114                                         options: {
 115                                                 maxZoom: 18
 116                                         }
 117                                 },
 118                                 France: {
 119                                         url: '//{s}.tile.openstreetmap.fr/osmfr/{z}/{x}/{y}.png',
 120                                         options: {
 121                                                 maxZoom: 20,
 122                                                 attribution: '&copy; Openstreetmap France | {attribution.OpenStreetMap}'
 123                                         }
 124                                 },
 125                                 HOT: {
 126                                         url: '//{s}.tile.openstreetmap.fr/hot/{z}/{x}/{y}.png',
 127                                         options: {
 128                                                 attribution: '{attribution.OpenStreetMap}, Tiles courtesy of <a href="http://hot.openstreetmap.org/" target="_blank">Humanitarian OpenStreetMap Team</a>'
 129                                         }
 130                                 }
 131                         }
 132                 },
 133                 OpenSeaMap: {
 134                         url: 'http://tiles.openseamap.org/seamark/{z}/{x}/{y}.png',
 135                         options: {
 136                                 attribution: 'Map data: &copy; <a href="http://www.openseamap.org">OpenSeaMap</a> contributors'
 137                         }
 138                 },
 139                 OpenTopoMap: {
 140                         url: '//{s}.tile.opentopomap.org/{z}/{x}/{y}.png',
 141                         options: {
 142                                 maxZoom: 17,
 143                                 attribution: 'Map data: {attribution.OpenStreetMap}, <a href="http://viewfinderpanoramas.org">SRTM</a> | Map style: &copy; <a href="https://opentopomap.org">OpenTopoMap</a> (<a href="https://creativecommons.org/licenses/by-sa/3.0/">CC-BY-SA</a>)'
 144                         }
 145                 },
 146                 Thunderforest: {
 147                         url: '//{s}.tile.thunderforest.com/{variant}/{z}/{x}/{y}.png',
 148                         options: {
 149                                 attribution:
 150                                         '&copy; <a href="http://www.thunderforest.com/">Thunderforest</a>, {attribution.OpenStreetMap}',
 151                                 variant: 'cycle'
 152                         },
 153                         variants: {
 154                                 OpenCycleMap: 'cycle',
 155                                 Transport: {
 156                                         options: {
 157                                                 variant: 'transport',
 158                                                 maxZoom: 19
 159                                         }
 160                                 },
 161                                 TransportDark: {
 162                                         options: {
 163                                                 variant: 'transport-dark',
 164                                                 maxZoom: 19
 165                                         }
 166                                 },
 167                                 SpinalMap: {
 168                                         options: {
 169                                                 variant: 'spinal-map',
 170                                                 maxZoom: 11
 171                                         }
 172                                 },
 173                                 Landscape: 'landscape',
 174                                 Outdoors: 'outdoors',
 175                                 Pioneer: 'pioneer'
 176                         }
 177                 },
 178                 OpenMapSurfer: {
 179                         url: 'http://korona.geog.uni-heidelberg.de/tiles/{variant}/x={x}&y={y}&z={z}',
 180                         options: {
 181                                 maxZoom: 20,
 182                                 variant: 'roads',
 183                                 attribution: 'Imagery from <a href="http://giscience.uni-hd.de/">GIScience Research Group @ University of Heidelberg</a> &mdash; Map data {attribution.OpenStreetMap}'
 184                         },
 185                         variants: {
 186                                 Roads: 'roads',
 187                                 AdminBounds: {
 188                                         options: {
 189                                                 variant: 'adminb',
 190                                                 maxZoom: 19
 191                                         }
 192                                 },
 193                                 Grayscale: {
 194                                         options: {
 195                                                 variant: 'roadsg',
 196                                                 maxZoom: 19
 197                                         }
 198                                 }
 199                         }
 200                 },
 201                 Hydda: {
 202                         url: '//{s}.tile.openstreetmap.se/hydda/{variant}/{z}/{x}/{y}.png',
 203                         options: {
 204                                 variant: 'full',
 205                                 attribution: 'Tiles courtesy of <a href="http://openstreetmap.se/" target="_blank">OpenStreetMap Sweden</a> &mdash; Map data {attribution.OpenStreetMap}'
 206                         },
 207                         variants: {
 208                                 Full: 'full',
 209                                 Base: 'base',
 210                                 RoadsAndLabels: 'roads_and_labels'
 211                         }
 212                 },
 213                 MapBox: {
 214                         url: '//api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token={accessToken}',
 215                         options: {
 216                                 attribution:
 217                                         'Imagery from <a href="http://mapbox.com/about/maps/">MapBox</a> &mdash; ' +
 218                                         'Map data {attribution.OpenStreetMap}',
 219                                 subdomains: 'abcd'
 220                         }
 221                 },
 222                 Stamen: {
 223                         url: '//stamen-tiles-{s}.a.ssl.fastly.net/{variant}/{z}/{x}/{y}.{ext}',
 224                         options: {
 225                                 attribution:
 226                                         'Map tiles by <a href="http://stamen.com">Stamen Design</a>, ' +
 227                                         '<a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a> &mdash; ' +
 228                                         'Map data {attribution.OpenStreetMap}',
 229                                 subdomains: 'abcd',
 230                                 minZoom: 0,
 231                                 maxZoom: 20,
 232                                 variant: 'toner',
 233                                 ext: 'png'
 234                         },
 235                         variants: {
 236                                 Toner: 'toner',
 237                                 TonerBackground: 'toner-background',
 238                                 TonerHybrid: 'toner-hybrid',
 239                                 TonerLines: 'toner-lines',
 240                                 TonerLabels: 'toner-labels',
 241                                 TonerLite: 'toner-lite',
 242                                 Watercolor: {
 243                                         options: {
 244                                                 variant: 'watercolor',
 245                                                 minZoom: 1,
 246                                                 maxZoom: 16
 247                                         }
 248                                 },
 249                                 Terrain: {
 250                                         options: {
 251                                                 variant: 'terrain',
 252                                                 minZoom: 0,
 253                                                 maxZoom: 18
 254                                         }
 255                                 },
 256                                 TerrainBackground: {
 257                                         options: {
 258                                                 variant: 'terrain-background',
 259                                                 minZoom: 0,
 260                                                 maxZoom: 18
 261                                         }
 262                                 },
 263                                 TopOSMRelief: {
 264                                         options: {
 265                                                 variant: 'toposm-color-relief',
 266                                                 ext: 'jpg',
 267                                                 bounds: [[22, -132], [51, -56]]
 268                                         }
 269                                 },
 270                                 TopOSMFeatures: {
 271                                         options: {
 272                                                 variant: 'toposm-features',
 273                                                 bounds: [[22, -132], [51, -56]],
 274                                                 opacity: 0.9
 275                                         }
 276                                 }
 277                         }
 278                 },
 279                 Esri: {
 280                         url: '//server.arcgisonline.com/ArcGIS/rest/services/{variant}/MapServer/tile/{z}/{y}/{x}',
 281                         options: {
 282                                 variant: 'World_Street_Map',
 283                                 attribution: 'Tiles &copy; Esri'
 284                         },
 285                         variants: {
 286                                 WorldStreetMap: {
 287                                         options: {
 288                                                 attribution:
 289                                                         '{attribution.Esri} &mdash; ' +
 290                                                         'Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012'
 291                                         }
 292                                 },
 293                                 DeLorme: {
 294                                         options: {
 295                                                 variant: 'Specialty/DeLorme_World_Base_Map',
 296                                                 minZoom: 1,
 297                                                 maxZoom: 11,
 298                                                 attribution: '{attribution.Esri} &mdash; Copyright: &copy;2012 DeLorme'
 299                                         }
 300                                 },
 301                                 WorldTopoMap: {
 302                                         options: {
 303                                                 variant: 'World_Topo_Map',
 304                                                 attribution:
 305                                                         '{attribution.Esri} &mdash; ' +
 306                                                         'Esri, DeLorme, NAVTEQ, TomTom, Intermap, iPC, USGS, FAO, NPS, NRCAN, GeoBase, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), and the GIS User Community'
 307                                         }
 308                                 },
 309                                 WorldImagery: {
 310                                         options: {
 311                                                 variant: 'World_Imagery',
 312                                                 attribution:
 313                                                         '{attribution.Esri} &mdash; ' +
 314                                                         'Source: Esri, i-cubed, USDA, USGS, AEX, GeoEye, Getmapping, Aerogrid, IGN, IGP, UPR-EGP, and the GIS User Community'
 315                                         }
 316                                 },
 317                                 WorldTerrain: {
 318                                         options: {
 319                                                 variant: 'World_Terrain_Base',
 320                                                 maxZoom: 13,
 321                                                 attribution:
 322                                                         '{attribution.Esri} &mdash; ' +
 323                                                         'Source: USGS, Esri, TANA, DeLorme, and NPS'
 324                                         }
 325                                 },
 326                                 WorldShadedRelief: {
 327                                         options: {
 328                                                 variant: 'World_Shaded_Relief',
 329                                                 maxZoom: 13,
 330                                                 attribution: '{attribution.Esri} &mdash; Source: Esri'
 331                                         }
 332                                 },
 333                                 WorldPhysical: {
 334                                         options: {
 335                                                 variant: 'World_Physical_Map',
 336                                                 maxZoom: 8,
 337                                                 attribution: '{attribution.Esri} &mdash; Source: US National Park Service'
 338                                         }
 339                                 },
 340                                 OceanBasemap: {
 341                                         options: {
 342                                                 variant: 'Ocean_Basemap',
 343                                                 maxZoom: 13,
 344                                                 attribution: '{attribution.Esri} &mdash; Sources: GEBCO, NOAA, CHS, OSU, UNH, CSUMB, National Geographic, DeLorme, NAVTEQ, and Esri'
 345                                         }
 346                                 },
 347                                 NatGeoWorldMap: {
 348                                         options: {
 349                                                 variant: 'NatGeo_World_Map',
 350                                                 maxZoom: 16,
 351                                                 attribution: '{attribution.Esri} &mdash; National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, iPC'
 352                                         }
 353                                 },
 354                                 WorldGrayCanvas: {
 355                                         options: {
 356                                                 variant: 'Canvas/World_Light_Gray_Base',
 357                                                 maxZoom: 16,
 358                                                 attribution: '{attribution.Esri} &mdash; Esri, DeLorme, NAVTEQ'
 359                                         }
 360                                 }
 361                         }
 362                 },
 363                 OpenWeatherMap: {
 364                         url: 'http://{s}.tile.openweathermap.org/map/{variant}/{z}/{x}/{y}.png',
 365                         options: {
 366                                 maxZoom: 19,
 367                                 attribution: 'Map data &copy; <a href="http://openweathermap.org">OpenWeatherMap</a>',
 368                                 opacity: 0.5
 369                         },
 370                         variants: {
 371                                 Clouds: 'clouds',
 372                                 CloudsClassic: 'clouds_cls',
 373                                 Precipitation: 'precipitation',
 374                                 PrecipitationClassic: 'precipitation_cls',
 375                                 Rain: 'rain',
 376                                 RainClassic: 'rain_cls',
 377                                 Pressure: 'pressure',
 378                                 PressureContour: 'pressure_cntr',
 379                                 Wind: 'wind',
 380                                 Temperature: 'temp',
 381                                 Snow: 'snow'
 382                         }
 383                 },
 384                 HERE: {
 385                         /*
 386                          * HERE maps, formerly Nokia maps.
 387                          * These basemaps are free, but you need an API key. Please sign up at
 388                          * http://developer.here.com/getting-started
 389                          *
 390                          * Note that the base urls contain '.cit' whichs is HERE's
 391                          * 'Customer Integration Testing' environment. Please remove for production
 392                          * envirionments.
 393                          */
 394                         url:
 395                                 '//{s}.{base}.maps.cit.api.here.com/maptile/2.1/' +
 396                                 '{type}/{mapID}/{variant}/{z}/{x}/{y}/{size}/{format}?' +
 397                                 'app_id={app_id}&app_code={app_code}&lg={language}',
 398                         options: {
 399                                 attribution:
 400                                         'Map &copy; 1987-2014 <a href="http://developer.here.com">HERE</a>',
 401                                 subdomains: '1234',
 402                                 mapID: 'newest',
 403                                 'app_id': '<insert your app_id here>',
 404                                 'app_code': '<insert your app_code here>',
 405                                 base: 'base',
 406                                 variant: 'normal.day',
 407                                 maxZoom: 20,
 408                                 type: 'maptile',
 409                                 language: 'eng',
 410                                 format: 'png8',
 411                                 size: '256'
 412                         },
 413                         variants: {
 414                                 normalDay: 'normal.day',
 415                                 normalDayCustom: 'normal.day.custom',
 416                                 normalDayGrey: 'normal.day.grey',
 417                                 normalDayMobile: 'normal.day.mobile',
 418                                 normalDayGreyMobile: 'normal.day.grey.mobile',
 419                                 normalDayTransit: 'normal.day.transit',
 420                                 normalDayTransitMobile: 'normal.day.transit.mobile',
 421                                 normalNight: 'normal.night',
 422                                 normalNightMobile: 'normal.night.mobile',
 423                                 normalNightGrey: 'normal.night.grey',
 424                                 normalNightGreyMobile: 'normal.night.grey.mobile',
 425
 426                                 basicMap: {
 427                                         options: {
 428                                                 type: 'basetile'
 429                                         }
 430                                 },
 431                                 mapLabels: {
 432                                         options: {
 433                                                 type: 'labeltile',
 434                                                 format: 'png'
 435                                         }
 436                                 },
 437                                 trafficFlow: {
 438                                         options: {
 439                                                 base: 'traffic',
 440                                                 type: 'flowtile'
 441                                         }
 442                                 },
 443                                 carnavDayGrey: 'carnav.day.grey',
 444                                 hybridDay: {
 445                                         options: {
 446                                                 base: 'aerial',
 447                                                 variant: 'hybrid.day'
 448                                         }
 449                                 },
 450                                 hybridDayMobile: {
 451                                         options: {
 452                                                 base: 'aerial',
 453                                                 variant: 'hybrid.day.mobile'
 454                                         }
 455                                 },
 456                                 pedestrianDay: 'pedestrian.day',
 457                                 pedestrianNight: 'pedestrian.night',
 458                                 satelliteDay: {
 459                                         options: {
 460                                                 base: 'aerial',
 461                                                 variant: 'satellite.day'
 462                                         }
 463                                 },
 464                                 terrainDay: {
 465                                         options: {
 466                                                 base: 'aerial',
 467                                                 variant: 'terrain.day'
 468                                         }
 469                                 },
 470                                 terrainDayMobile: {
 471                                         options: {
 472                                                 base: 'aerial',
 473                                                 variant: 'terrain.day.mobile'
 474                                         }
 475                                 }
 476                         }
 477                 },
 478                 FreeMapSK: {
 479                         url: 'http://t{s}.freemap.sk/T/{z}/{x}/{y}.jpeg',
 480                         options: {
 481                                 minZoom: 8,
 482                                 maxZoom: 16,
 483                                 subdomains: '1234',
 484                                 bounds: [[47.204642, 15.996093], [49.830896, 22.576904]],
 485                                 attribution:
 486                                         '{attribution.OpenStreetMap}, vizualization CC-By-SA 2.0 <a href="http://freemap.sk">Freemap.sk</a>'
 487                         }
 488                 },
 489                 MtbMap: {
 490                         url: 'http://tile.mtbmap.cz/mtbmap_tiles/{z}/{x}/{y}.png',
 491                         options: {
 492                                 attribution:
 493                                         '{attribution.OpenStreetMap} &amp; USGS'
 494                         }
 495                 },
 496                 CartoDB: {
 497                         url: 'http://{s}.basemaps.cartocdn.com/{variant}/{z}/{x}/{y}.png',
 498                         options: {
 499                                 attribution: '{attribution.OpenStreetMap} &copy; <a href="http://cartodb.com/attributions">CartoDB</a>',
 500                                 subdomains: 'abcd',
 501                                 maxZoom: 19,
 502                                 variant: 'light_all'
 503                         },
 504                         variants: {
 505                                 Positron: 'light_all',
 506                                 PositronNoLabels: 'light_nolabels',
 507                                 PositronOnlyLabels: 'light_only_labels',
 508                                 DarkMatter: 'dark_all',
 509                                 DarkMatterNoLabels: 'dark_nolabels',
 510                                 DarkMatterOnlyLabels: 'dark_only_labels'
 511                         }
 512                 },
 513                 HikeBike: {
 514                         url: 'http://{s}.tiles.wmflabs.org/{variant}/{z}/{x}/{y}.png',
 515                         options: {
 516                                 maxZoom: 19,
 517                                 attribution: '{attribution.OpenStreetMap}',
 518                                 variant: 'hikebike'
 519                         },
 520                         variants: {
 521                                 HikeBike: {},
 522                                 HillShading: {
 523                                         options: {
 524                                                 maxZoom: 15,
 525                                                 variant: 'hillshading'
 526                                         }
 527                                 }
 528                         }
 529                 },
 530                 BasemapAT: {
 531                         url: '//maps{s}.wien.gv.at/basemap/{variant}/normal/google3857/{z}/{y}/{x}.{format}',
 532                         options: {
 533                                 maxZoom: 19,
 534                                 attribution: 'Datenquelle: <a href="www.basemap.at">basemap.at</a>',
 535                                 subdomains: ['', '1', '2', '3', '4'],
 536                                 format: 'png',
 537                                 bounds: [[46.358770, 8.782379], [49.037872, 17.189532]],
 538                                 variant: 'geolandbasemap'
 539                         },
 540                         variants: {
 541                                 basemap: 'geolandbasemap',
 542                                 grau: 'bmapgrau',
 543                                 overlay: 'bmapoverlay',
 544                                 highdpi: {
 545                                         options: {
 546                                                 variant: 'bmaphidpi',
 547                                                 format: 'jpeg'
 548                                         }
 549                                 },
 550                                 orthofoto: {
 551                                         options: {
 552                                                 variant: 'bmaporthofoto30cm',
 553                                                 format: 'jpeg'
 554                                         }
 555                                 }
 556                         }
 557                 },
 558                 NASAGIBS: {
 559                         url: '//map1.vis.earthdata.nasa.gov/wmts-webmerc/{variant}/default/{time}/{tilematrixset}{maxZoom}/{z}/{y}/{x}.{format}',
 560                         options: {
 561                                 attribution:
 562                                         'Imagery provided by services from the Global Imagery Browse Services (GIBS), operated by the NASA/GSFC/Earth Science Data and Information System ' +
 563                                         '(<a href="https://earthdata.nasa.gov">ESDIS</a>) with funding provided by NASA/HQ.',
 564                                 bounds: [[-85.0511287776, -179.999999975], [85.0511287776, 179.999999975]],
 565                                 minZoom: 1,
 566                                 maxZoom: 9,
 567                                 format: 'jpg',
 568                                 time: '',
 569                                 tilematrixset: 'GoogleMapsCompatible_Level'
 570                         },
 571                         variants: {
 572                                 ModisTerraTrueColorCR: 'MODIS_Terra_CorrectedReflectance_TrueColor',
 573                                 ModisTerraBands367CR: 'MODIS_Terra_CorrectedReflectance_Bands367',
 574                                 ViirsEarthAtNight2012: {
 575                                         options: {
 576                                                 variant: 'VIIRS_CityLights_2012',
 577                                                 maxZoom: 8
 578                                         }
 579                                 },
 580                                 ModisTerraLSTDay: {
 581                                         options: {
 582                                                 variant: 'MODIS_Terra_Land_Surface_Temp_Day',
 583                                                 format: 'png',
 584                                                 maxZoom: 7,
 585                                                 opacity: 0.75
 586                                         }
 587                                 },
 588                                 ModisTerraSnowCover: {
 589                                         options: {
 590                                                 variant: 'MODIS_Terra_Snow_Cover',
 591                                                 format: 'png',
 592                                                 maxZoom: 8,
 593                                                 opacity: 0.75
 594                                         }
 595                                 },
 596                                 ModisTerraAOD: {
 597                                         options: {
 598                                                 variant: 'MODIS_Terra_Aerosol',
 599                                                 format: 'png',
 600                                                 maxZoom: 6,
 601                                                 opacity: 0.75
 602                                         }
 603                                 },
 604                                 ModisTerraChlorophyll: {
 605                                         options: {
 606                                                 variant: 'MODIS_Terra_Chlorophyll_A',
 607                                                 format: 'png',
 608                                                 maxZoom: 7,
 609                                                 opacity: 0.75
 610                                         }
 611                                 }
 612                         }
 613                 },
 614                 NLS: {
 615                         // NLS maps are copyright National library of Scotland.
 616                         // http://maps.nls.uk/projects/api/index.html
 617                         // Please contact NLS for anything other than non-commercial low volume usage
 618                         //
 619                         // Map sources: Ordnance Survey 1:1m to 1:63K, 1920s-1940s
 620                         //   z0-9  - 1:1m
 621                         //  z10-11 - quarter inch (1:253440)
 622                         //  z12-18 - one inch (1:63360)
 623                         url: '//nls-{s}.tileserver.com/nls/{z}/{x}/{y}.jpg',
 624                         options: {
 625                                 attribution: '<a href="http://geo.nls.uk/maps/">National Library of Scotland Historic Maps</a>',
 626                                 bounds: [[49.6, -12], [61.7, 3]],
 627                                 minZoom: 1,
 628                                 maxZoom: 18,
 629                                 subdomains: '0123',
 630                         }
 631                 }
 632         };
 633
 634         L.tileLayer.provider = function (provider, options) {
 635                 return new L.TileLayer.Provider(provider, options);
 636         };
 637
 638         return L;
 639 }));