openlayers-3geotiff

Is there an implementation of GeoTIFF in OpenLayer 3?


As the title says, I need to add some (COG) GeoTIFF layer to a website using openlayers 3. Since we're not ready to upgrade to a current version of openlayers, I've been wondering whether there was a way to do so with openlayers 3.


Solution

  • GeoTIFF support was added in version 6.7.0. If your reason for keeping Openlayers 3 is the syntax you can also use OpenLayers 6 and 7 as a full build as below

    <!DOCTYPE html>
    <html lang="en">
      <head>
        <meta charset="UTF-8">
        <title>Cloud Optimized GeoTIFF (COG)</title>
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@v7.3.0/ol.css">
        <style>
          html, body, .map {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
          }
        </style>
      </head>
      <body>
        <div id="map" class="map"></div>
        <script src="https://cdn.jsdelivr.net/npm/elm-pep@1.0.6/dist/elm-pep.js"></script>
        <script src="https://cdn.jsdelivr.net/npm/geotiff"></script>
        <script src="https://cdn.jsdelivr.net/npm/ol@v7.3.0/dist/ol.js"></script>
        <script>
    
    const source = new ol.source.GeoTIFF({
      sources: [
        {
          url: 'https://sentinel-cogs.s3.us-west-2.amazonaws.com/sentinel-s2-l2a-cogs/36/Q/WD/2020/7/S2A_36QWD_20200701_0_L2A/TCI.tif',
        },
      ],
    });
    
    const map = new ol.Map({
      target: 'map',
      layers: [
        new ol.layer.WebGLTile({
          source: source,
        }),
      ],
      view: source.getView(),
    });
    
        </script>
      </body>
    </html>