Query Esri REST services

How to query an Esri ArcGIS Server or ArcGIS Online REST Service using Data Events in Fulcrum.

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.

USGS Elevation Query

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);