turf.point

Takes coordinates and properties (optional) and returns a new Point feature.

<!doctype html>
<html lang="en">
  <head>
    <link rel="stylesheet" href="https://rawcdn.githack.com/openlayers/openlayers.github.io/master/en/v5.3.0/css/ol.css" type="text/css">
    <link rel="stylesheet" href="assets/css/styles.css" type="text/css">
    <script src="//cdn.jsdelivr.net/npm/@turf/turf@5/turf.min.js"></script>
    <script src="https://rawcdn.githack.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js" type="text/javascript"></script>
    <title>Turf and OpenLayers 3 - Helper point</title>
  </head>
  <body>
    <div id="map" class="map"></div>
    <script type="text/javascript">

      // Tower of Bretagne without properties declared
      var pt1 = turf.point([-1.5579479, 47.2175545]);

      // Cranes of Nantes with properties defined
      var pt2 = turf.point([-1.5741021, 47.1991929], {
        name: 'Grue grise',
        man_made: 'crane'
      });
      var pt3 = turf.point([-1.57007, 47.20507], {
        name: 'Grue jaune',
        man_made: 'crane'
      });

      // Declare a formatter to read GeoJSON
      var format = new ol.format.GeoJSON();

      // Declare a source
      var vectorSource = new ol.source.Vector();

      // When reading feature, reproject to EPSG 3857
      var feature = format.readFeature(pt1, {
        featureProjection: 'EPSG:3857'
      });
      // Add a feature
      vectorSource.addFeature(feature);

      // Create an Array of ol.Feature
      var feature_pt2 = format.readFeatures(pt2, {
        featureProjection: 'EPSG:3857'
      });
      // Create another Array of ol.Feature
      var feature_pt3 = format.readFeatures(pt3, {
        featureProjection: 'EPSG:3857'
      });
      // Combine together two Array of ol.Feature, just to play and learn
      var pt2_pt3 = feature_pt2.concat(feature_pt3);
      // Add features to the source
      vectorSource.addFeatures(pt2_pt3);

      // Declare a vector layer with the already
      // created source containing added features
      var vectorLayer = new ol.layer.Vector({
        source: vectorSource,
        style: [
          new ol.style.Style({
            image: new ol.style.Circle({
              stroke: new ol.style.Stroke({
                color: 'white'
              }),
              fill: new ol.style.Fill({
                color: '#1f6b75'
              }),
              radius: 5
            })
          })
        ]
      });

      // Instanciate a map and add layers
      var map = new ol.Map({
        target: 'map',
        layers: [
          new ol.layer.Tile({
            source: new ol.source.OSM()
          }),
          vectorLayer
        ],
        view: new ol.View({
          center: ol.proj.transform(
            [-1.563046, 47.214751],
            'EPSG:4326',
            'EPSG:3857'
          ),
          zoom: 13
        })
      });
    </script>
  </body>
</html>

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