EOC Flood using WFS

eoc-flood-using-wfs.markdown

EOC Flood using WFS

Example of using WFS with a BBOX strategy.

A Pen by Nico Mandery on CodePen.

License.

index.html

<div id="map" class="map" style="width: 100%; height: 100%; position:fixed"></div>

script.js

var vectorSource = new ol.source.Vector({
  format: new ol.format.GeoJSON(),
  url: function(extent) {
    return (
      "https://geoservice.dlr.de/eoc/zki/service/wfs?service=WFS&" +
      "version=1.1.0&request=GetFeature&typename=riesgos_workshop:flood&" +
      "outputFormat=application/json&srsname=EPSG:3857&" +
      "bbox=" +
      extent.join(",") +
      ",EPSG:3857"
    );
  },
  strategy: ol.loadingstrategy.bbox
});

var vector = new ol.layer.Vector({
  source: vectorSource,
  style: new ol.style.Style({
    stroke: new ol.style.Stroke({
      color: "rgba(0, 0, 255, 1.0)",
      width: 2
    })
  })
});

var bg = new ol.layer.Tile({
  visible: true,
  opacity: 1.0,
  title: "EOC Base Overlay",
  source: new ol.source.WMTS({
    attributions: [
      new ol.Attribution({
        html:
          '| Baseoverlay: Data © <a href="http://openstreetmap.org">OpenStreetMap contributors</a> and <a href="../about#basemaps">others</a>, Rendering © <a href="http://www.dlr.de/eoc">DLR/EOC</a>'
      })
    ],
    url: "https://tiles.geoservice.dlr.de/service/wmts",
    //		crossOrigin: 'Anonymous',
    layer: "eoc:baseoverlay",
    matrixSet: "EPSG:3857",
    format: "image/png",
    projection: ol.proj.get("EPSG:3857"),
    tileGrid: new ol.tilegrid.WMTS({
      extent: [-20037508.3428, -20037508.3428, 20037508.3428, 20037508.3428],
      origin: [-20037508.3428, 20037508.3428],
      resolutions: [
        156543.03392811998,
        78271.51696419998,
        39135.758481959994,
        19567.879241008,
        9783.939620504,
        4891.969810252,
        2445.984905126,
        1222.9924525644,
        611.4962262807999,
        305.74811314039994,
        152.87405657047998,
        76.43702828523999,
        38.21851414248,
        19.109257071295996,
        9.554628535647998,
        4.777314267823999,
        2.3886571339119995
      ],
      matrixIds: [
        "EPSG:3857:0",
        "EPSG:3857:1",
        "EPSG:3857:2",
        "EPSG:3857:3",
        "EPSG:3857:4",
        "EPSG:3857:5",
        "EPSG:3857:6",
        "EPSG:3857:7",
        "EPSG:3857:8",
        "EPSG:3857:9",
        "EPSG:3857:10",
        "EPSG:3857:11",
        "EPSG:3857:12",
        "EPSG:3857:13",
        "EPSG:3857:14",
        "EPSG:3857:15",
        "EPSG:3857:16"
      ],
      tileSize: [256, 256]
    }),
    wrapX: true
  })
});

var map = new ol.Map({
  layers: [bg, vector],
  target: document.getElementById("map"),
  view: new ol.View({
    center: [-7201856.245971127, -1992342.4195436193],
    maxZoom: 19,
    zoom: 3
  })
});

scripts

<script src="https://openlayers.org/en/v4.6.5/build/ol.js"></script>

styles

<link href="https://openlayers.org/en/v4.6.5/css/ol.css" rel="stylesheet" />