3f:null 40:["$","title",null,{"children":"Proposed Tapalcatl 2 Metadata | Seth Fitzsimmons | Observable"}] 46:Tee6,simple = ({ // REQUIRED. Tapalcatl 2 version number. tapalcatl: "2.0.0", // OPTIONAL. Default: null. A name describing the tileset. The name can // contain any legal character. Implementations SHOULD NOT interpret the // name as HTML. name: "watercolor", // OPTIONAL. Default: null. A text description of the tileset. The // description can contain any legal character. Implementations SHOULD NOT // interpret the description as HTML. description: "Stamen's watercolor style", // OPTIONAL. Default: "1.0.0". A semver.org style version number. When // changes across tiles are introduced, the minor version MUST change. // This may lead to cut off labels. Therefore, implementors can decide to // clean their cache when the minor version changes. Changes to the patch // level MUST only have changes to tiles that are contained within one tile. // When tiles change significantly, the major version MUST be increased. // Implementations MUST NOT use tiles with different major versions. version: "1.0.0", // OPTIONAL. Default: null. Contains an attribution to be displayed // when the map is shown to a user. Implementations MAY decide to treat this // as HTML or literal text. For security reasons, make absolutely sure that // this field can't be abused as a vector for XSS or beacon tracking. attribution: `Map tiles by Stamen Design, under CC BY 3.0. Data by OpenStreetMap, under CC BY SA.`, // OPTIONAL. Default: 0. >= 0, <= 30. // An integer specifying the minimum zoom level. This will be used as the // zoom level at the top of the root sub-pyramid (typically 0/0/0). minzoom: 0, // OPTIONAL. Default: 30. >= 0, <= 30. // An integer specifying the maximum zoom level. MUST be >= minzoom. maxzoom: 12, // OPTIONAL. Default: [-180, -90, 180, 90]. // The maximum extent of available map tiles. Bounds MUST define an area // covered by all zoom levels. The bounds are represented in WGS:84 // latitude and longitude values, in the order left, bottom, right, top. // Values may be integers or floating point numbers. bounds: [ -180, -85.05112877980659, 180, 85.0511287798066 ], // OPTIONAL. Default: null. // The first value is the longitude, the second is latitude (both in // WGS:84 values), the third value is the zoom level as an integer. // Longitude and latitude MUST be within the specified bounds. // The zoom level MUST be between minzoom and maxzoom. // Implementations can use this value to set the default location. If the // value is null, implementations may use their own algorithm for // determining a default location. center: [ -76.275329586789, 39.153492567373, 8 ], // REQUIRED. A URL template for tile archives. // {hash}, {z}, {x} and {y}, if present, are replaced with corresponding // hash, zoom, x, and y values. source: "s3://bucket/{z}/{x}/{y}.zip", // OPTIONAL. Default: 1. Metatile size. // The number of tiles on a side at the top of a sub-pyramid. This must // be a power of 2. metatile: 8, // REQUIRED. List of materialized zooms. // Zoom levels at which archives exist. materializedZooms: [0, 4, 8], // OPTIONAL. Default: 1. // The smallest scale available for this variant. If 1, filenames like // {z}. will be used. If > 1, filenames like {z}@. // will be used. minscale: 1, // OPTIONAL. Default: 1. // The largest scale available for this variant. See above for filename rules. maxscale: 2, // REQUIRED. Mapping from file extensions to content types for available formats. formats: { png: "image/png" } })47:T15df,multiple = ({ tapalcatl: "2.0.0", // REQUIRED. A URL template for tile archives. // {hash}, {z}, {x} and {y}, if present, are replaced with corresponding // hash, zoom, x, and y values. source: "s3://bucket/{hash}/{z}/{x}/{y}.zip", // REQUIRED. Metatile size. // The number of tiles on a side at the top of a sub-pyramid. This must // be a power of 2. metatile: 8, // REQUIRED. List of materialized zooms. // Zoom levels at which archives exist. materializedZooms: [0, 4, 8], variants: { "mapbox-streets": { // TileJSON attributes id: "mapbox.mapbox-streets-v5", name: "Mapbox Streets V5", attribution: "© Mapbox © OpenStreetMap Improve this map", bounds: [-180, -85.0511, 180, 85.0511], maxzoom: 14, minzoom: 0, // Mapnik attributes // when tiles are absent, try this zoom level next (used for empty/water tiles) maskLevel: 8, // (partial) list of vector layers vector_layers: [ { description: "", fields: { class: "One of: cemetery, hospital, industrial, park, parking, pitch, sand, school, wood", osm_id: "Unique OSM ID number" }, id: "landuse" }, { description: "", fields: { class: "One of: river, canal, stream, stream_intermittent, ditch, drain", osm_id: "Unique OSM ID number", type: "One of: river, canal, stream, ditch, drain" }, id: "waterway" } ], // Tapalcatl attributes // available formats + corresponding HTTP headers formats: { "mvt": { "Content-Type": "application/vnd.mapbox-vector-tile", "Content-Encoding": "gzip" } } }, watercolor: { // OPTIONAL. Default: null. A name describing the tileset. The name can // contain any legal character. Implementations SHOULD NOT interpret the // name as HTML. name: "watercolor", // OPTIONAL. Default: null. A text description of the tileset. The // description can contain any legal character. Implementations SHOULD NOT // interpret the description as HTML. description: "Stamen's watercolor style", // OPTIONAL. Default: "1.0.0". A semver.org style version number. When // changes across tiles are introduced, the minor version MUST change. // This may lead to cut off labels. Therefore, implementors can decide to // clean their cache when the minor version changes. Changes to the patch // level MUST only have changes to tiles that are contained within one tile. // When tiles change significantly, the major version MUST be increased. // Implementations MUST NOT use tiles with different major versions. version: "1.0.0", // OPTIONAL. Default: null. Contains an attribution to be displayed // when the map is shown to a user. Implementations MAY decide to treat this // as HTML or literal text. For security reasons, make absolutely sure that // this field can't be abused as a vector for XSS or beacon tracking. attribution: `Map tiles by Stamen Design, under CC BY 3.0. Data by OpenStreetMap, under CC BY SA.`, // OPTIONAL. Default: 0. >= 0, <= 30. // An integer specifying the minimum zoom level. This will be used as the // zoom level at the top of the root sub-pyramid (typically 0/0/0). minzoom: 0, // OPTIONAL. Default: 30. >= 0, <= 30. // An integer specifying the maximum zoom level. MUST be >= minzoom. maxzoom: 12, // OPTIONAL. Default: [-180, -90, 180, 90]. // The maximum extent of available map tiles. Bounds MUST define an area // covered by all zoom levels. The bounds are represented in WGS:84 // latitude and longitude values, in the order left, bottom, right, top. // Values may be integers or floating point numbers. bounds: [ -180, -85.05112877980659, 180, 85.0511287798066 ], // OPTIONAL. Default: null. // The first value is the longitude, the second is latitude (both in // WGS:84 values), the third value is the zoom level as an integer. // Longitude and latitude MUST be within the specified bounds. // The zoom level MUST be between minzoom and maxzoom. // Implementations can use this value to set the default location. If the // value is null, implementations may use their own algorithm for // determining a default location. center: [ -76.275329586789, 39.153492567373, 8 ], // OPTIONAL. Default: 1. // The smallest scale available for this variant. If 1, filenames like // {z}. will be used. If > 1, filenames like {z}@. // will be used. minscale: 1, // OPTIONAL. Default: 1. // The largest scale available for this variant. See above for filename rules. maxscale: 2, // REQUIRED. Mapping from file extensions to content types for available formats. // This is shorthand for the expanded version, which maps file extensions to an // object containing HTTP headers formats: { png: "image/png" } } } })48:[] 44:{"id":"ba1aab88cea3ef41","slug":"proposed-top-level-tapalcatl-2-metadata","title":"Proposed Tapalcatl 2 Metadata","thumbnail":"53e8529b6ef1363ad8f7092e566d7ffd2ebae93f226fc200781c9e9b770d5f5a","access_level":"public","create_time":"$D2018-10-12T01:12:28.461Z","update_time":"$D2018-11-14T03:04:31.255Z","view_time":null,"first_public_time":"$D2018-10-12T02:12:18.470Z","has_unpublished_edits":null,"fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"461277f0bca7897c","login":"mojodna","name":"Seth Fitzsimmons","avatar_url":"https://avatars-next.observableusercontent.com/2da6648e4443edddbb03f8be4bbbd7a74211c5c91f4b601246faa6f14d278a5d","tier":"starter_2024","bio":"","following":false},"version":61,"publish_version":61,"role":null,"authored":false,"authors":[{"type":"individual","id":"8981a93cd4c5e490","login":"mojodna","name":"Seth Fitzsimmons","avatar_url":"https://avatars-next.observableusercontent.com/2da6648e4443edddbb03f8be4bbbd7a74211c5c91f4b601246faa6f14d278a5d","tier":null,"bio":"","following":false}],"members":[{"type":"individual","id":"8981a93cd4c5e490","login":"mojodna","name":"Seth Fitzsimmons","avatar_url":"https://avatars-next.observableusercontent.com/2da6648e4443edddbb03f8be4bbbd7a74211c5c91f4b601246faa6f14d278a5d","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"titling":"auto","title":"Proposed Tapalcatl 2 Metadata","cells":[{"id":0,"value":"md`# Proposed Tapalcatl 2 Metadata`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":4,"value":"md`\n\n## \\`meta.json\\`\n\nThis is a subset of [TileJSON 2.2.0](https://github.com/mapbox/tilejson-spec/blob/master/2.2.0/README.md) augmented with Tapalcatl (and Mapnik) attributes. See below for annotated property descriptions. See [tapalcatl-2-spec](https://github.com/mojodna/tapalcatl-2-spec) for a living version of the specification.\n\nThis is the definition of a source containing only 1 variant. Tiles within the ZIP will be named \\`{z}/{x}/{y}.png\\` and \\`{z}/{x}/{y}@2x.png\\`.\n\n\\`\\`\\`json\n${JSON.stringify(simple, null, 2)}\n\\`\\`\\`\n\nThis is the definition for a source containing multiple variants. Mapbox Streets tiles within the ZIP would be named \\`mapbox-streets/{z}/{x}/{y}.mvt\\`.\n\n\\`\\`\\`json\n${JSON.stringify(multiple, null, 2)}\n\\`\\`\\`\n\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":47,"value":"md`\nPer-archive metadata looks the same, with \\`source\\` omitted and an additional \\`root\\` attribute corresponding to the top of the sub-pyramid contained in it, e.g.\n\n\\`\\`\\`json\n${JSON.stringify(simpleArchive, null, 2)}\n\\`\\`\\`\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":18,"value":"$46","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":6,"value":"$47","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":49,"value":"simpleArchive = {\n const { source, ...meta } = simple;\n \n return {\n ...meta,\n root: \"0/0/0\"\n };\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W48","stdlib":"1"}} 45:"$44:body"