Query Esri REST services

This example passes your Fulcrum latitude and longitude as a point parameter in an Intersect query against data hosted on an Esri REST Service. Three text fields are required in the app, for the particular properties we're interested in here. NOTE: The LATITUDE and LONGITUDE functions will only return values if a record's geometry type is set to Point, and there is a location set. Unless you have enabled Lines and Polygons for your app, the Point type will be the only available geometry type for records in the app.

function getFloodInfo() {

  var options = {
    url: 'https://hazards.fema.gov/gis/nfhl/rest/services/public/NFHLWMS/MapServer/28/query',
    qs: {
      geometry: LONGITUDE() + ',' + LATITUDE(),
      geometryType: 'esriGeometryPoint',
      inSR: '4326',
      spatialRel: 'esriSpatialRelIntersects',
      outFields: '*',
      returnGeometry: false,
      f: 'pjson'
    }
  };

  REQUEST(options, function (err, res, body) {
    if (err) {
      ALERT('Error: ' + err.message);
    } else {
      var result = JSON.parse(body);
      if (result && result.features[0]) {
        SETVALUE('flood_zone', result.features[0].attributes['FLD_ZONE']);
        SETVALUE('flood_zone_subtype', result.features[0].attributes['ZONE_SUBTY']);
        SETVALUE('dfirm_id', result.features[0].attributes['DFIRM_ID']);
      } else {
        SETVALUE('flood_zone', 'NA');
        SETVALUE('flood_zone_subtype', 'NA');
        SETVALUE('dfirm_id', 'NA');
      }
    }
  });
}

ON('change-geometry', getFloodInfo);

Updated 4 months ago