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    leaflet-tilelayer-swiss

    2.2.1 • Public • Published

    npm version

    Leaflet.TileLayer.Swiss

    Leaflet.TileLayer.Swiss is a Leaflet plugin for displaying national maps of Switzerland using map tiles from Swisstopo. This plugin is not affiliated with or endorsed by Swisstopo.

    Demo

    Screenshot of Demo

    Usage

    Quick start

    Check out the quick start documentation to get started.

    Examples

    Options

    Check out the list of all available map layers to see recommended combinations of options.

    All available options are listed below together with their default values.

    L.tileLayer.swiss({
      // Coordinate reference system. EPSG2056 and EPSG21781 are available.
      crs: L.CRS.EPSG2056
      // Image format (jpeg or png). Only one format is available per layer.
      format: 'jpeg',
      // Layer name.
      layer: 'ch.swisstopo.pixelkarte-farbe',
      // Minimum zoom. Levels below 14 exist for technical reasons,
      // but you probably do not want to use them.
      minZoom: 14,
      // Maximum zoom. Availability of zoom levels depends on the layer.
      maxNativeZoom: 27,
      // Timestamp. Most (but not all) layers have a 'current' timestamp.
      // Some layers have multiple versions with different timestamps.
      timestamp: 'current',
      // Map tile URL. Appropriate defaults are chosen based on the crs option.
      url: 'https://wmts{s}.geo.admin.ch/1.0.0/{layer}/default/{timestamp}/2056/{z}/{x}/{y}.{format}'
    });

    Coordinate reference systems (CRS)

    Two CRS are commonly used in Switzerland:

    In order to use EPSG:21781, both map and layer CRS have to be adapted:

    var map = L.map('map', { crs: L.CRS.EPSG21781 });
    var swissLayer = L.tileLayer.swiss({ crs: L.CRS.EPSG21781 }).addTo(map);
    
    map.setView(L.CRS.EPSG21781.unproject(L.point(600000, 200000)), 16);

    Swisstopo tile service

    Since 2021-03-01, Swisstopo maps are available as Open Government Data (OGD), and Swisstopo also provides a free tile service, for which no registration is required. In practice, this means that you can directly start using this plugin, and with the default configuration, the map will be loaded directly from Swisstopo servers.

    Attribution

    Swisstopo, like most map tile providers, requires that you display a copyright attribution below the map.

    This plugin adds a map attribution which links to Swisstopo.

    License

    This plugin is licensed under the MIT license, see the LICENSE file.

    Acknowledgements

    Thanks to Swisstopo and the Geoinformation Act for providing excellent geodata.

    Thanks to @procrastinatio whose blog post taught me how to use Swisstopo layers in Leaflet a few year ago.

    See also

    Keywords

    none

    Install

    npm i leaflet-tilelayer-swiss

    DownloadsWeekly Downloads

    122

    Version

    2.2.1

    License

    MIT

    Unpacked Size

    117 kB

    Total Files

    18

    Last publish

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