tilelive.js

• Tilelive is a module to help interactions between tilelive source modules.
• A tilelive source is an interface implemented by node modules that deal with reading and writing map tiles.

Awesome tilelive modules

• tilelive-vector - Implements the tilelive API for rendering mapnik vector tiles to raster images.
• tilelive-bridge - Implements the tilelive API for generating mapnik vector tiles from traditional mapnik datasources.
• tilelive-mapnik - mapnik renderer backend for tilelive.
• tilelive-s3 - Extends TileJSON for S3-specific tasks.
• tilelive-file - tilelive.js adapter for reading from the filesystem.
• tilelive-tmsource - A tilelive provider for TM2 sources.
• tilelive-cache - A caching wrapper for tilelive.js
• tilelive-overlay - Render GeoJSON features with simplestyle styles in a tilelive pipeline.
• tilelive-tmstyle - A tilelive provider for tmstyle sources.
• tilelive-http - An HTTP source for tilelive.
• node-mbtiles - A mbtiles renderer and storage backend for tilelive.
• tl - An alternate command line interface to tilelive.
• tilelive-omnivore - Implements the tilelive api for a variety of data sources.
• tilelive-xray - Tilelive vector tile visualization.
• tilelive-merge - A tilelive source that merges sources.
• tilelive-streaming - Streaming functionality for tilelive modules.
• tilelive-redis - Redis wrapping source for tilelive.
• tilelive-modules - A listing of known tilelive modules.
• tilelive-decorator - Load vector tiles from a tilelive source and decorate them with properties from redis.
• tilelive-blend - A tilelive provider that blends.
• tilelive-carto - A Carto style source for tilelive
• mongotiles - mongotiles is a tilelive backend plug-in for MongoDB GridFS.
• tilelive-rasterpbf - A tilelive source for outputting PBF-encoded rasters from PostGIS.
• tilelive-memcached - A memcached wrapping source for tilelive.
• tilelive-csvin - A streaming tilelive source for CSV inputs.
• tilelive-tms - A tilelive.js adapter for reading from a TMS service.
• tilelive-multicache - Module for adding a caching layer in front a tilelive source.
• tilelive-cardboard - Renders vector tiles from a cardboard dataset.
• tilelive-utfgrig - A tilelive provider that treats grids as tiles
• tilelive-arcgis - A tilelive.js adapter for ArcGIS tile caches.
• tilelive-mapbox - A tilelive.js source for mapbox:// URIs.
• tilelive-solid - A tilelive provider that generates solid colored tiles.
• tilelive-raster - A tilelive source for simple rasters, both local and remote.
• tilelive-null - A noop sink for tilelive.
• tilelive-noop - A no-op tilelive source.
• tilelive-csv - PBF → CSV with tilelive.
• tilelive-error - Avoid repeating error-prone initialization.
• tilelive-lambda - AWS Lambda source for tilelive.
• tilelive-cartodb - A tilelive source for CartoDB.
• cdbtiles - A tilelive backend plug-in for CouchDB.
• node-tilejson - Tile source backend for online tile sources.
• tilelive-foxgis - A tilelive plugin to serve tiles with mongodb
• tessera - A tilelive-based tile server.

Ecosytem of tilelive

Usage

Tilelive doesn't ship with any implementing modules by default. To register a module as one tilelive recognizes:

require('[implementation]').registerProtocols(tilelive);

• tilelive.list(source, callback): Lists all tilesets in a directory. source is a folder that is used by registered implementations to search for individual tilesets. callback receives an error object (or null) and a hash hash with keys being Tilestore IDs and values being Tilestore URIs. Example:

{
    "world-light": "mbtiles:///path/to/file/world-light.mbtiles",
    "mapquest": "tilejson:///path/to/file/mapquest.tilejson"
}

• tilelive.findID(source, id, callback): Looks for a particular tileset ID in a directory. callback receives an error object (or null) and the URI of the tileset.

• tilelive.load(uri, callback): Loads the Tilestore object associated with the specified uri. callback receives an error object (or null) and the Tilestore object.

• tilelive.info(uri, callback): Loads the Tilestore object associated with the specified uri and retrieves its metadata in a TileJSON compliant format. callback receives an error object (or null), the metadata hash and the Tilestore object.

• tilelive.all(source, callback): Loads metadata in a TileJSON compliant format for all tilesets in the source directory. callback receives an error object (or null) and an array with TileJSON metadata about each tileset in that directory.

• tilelive.verify(tilejson): Validates a TileJSON object and returns error objects for invalid entries.

Read/write streams

Tilelive provides an implementation of node object streams for copying tiles from one source to another.

// Copy all tiles and metadata from source A to source B.
var get = tilelive.createReadStream(sourceA);
var put = tilelive.createWriteStream(sourceB);
get.pipe(put);
put.on('finish', function() {
    console.log('done!');
});

See tilelive-copy and the streams tests for example usage of copy streams.

Parallel read streams

Tilelive can split a read operation into an arbitrary number of jobs. Pass a job parameter to options when using tilelive.createReadStream or tilelive.deserialize:

var readable = tilelive.createReadStream(src, { type: 'scanline', job: { total: 4, num: 1 } });

This instructs tilelive to only read tiles that would fall into job 1 of 4. A complete read would mean four calls each with a different num.

bin/tilelive-copy

tilelive can be used to copy data between tilestores. For a full list of options, run tilelive-copy.

Tests

To run the tests

npm test