Method locationSetsAt

modules/core/LocationSystem.js:363–403

* locationSetsAt * Find all the locationSets valid at the given location. * Results include the area (in km²) to facilitate sorting. * * Object of locationSetIDs to areas (in km²) * { * "+[Q2]": 511207893.3958111, * "+[Q30]": 21817019.17, * "+[new_jersey.geojson]": 2239

(loc)

   * @return  Object of locationSetIDs valid at given location
   */
  locationSetsAt(loc) {
    let result = {};

    const hits = this._wp(loc, true) || [];
    const thiz = this;

    // locationSets
    hits.forEach(prop => {
      if (prop.id[0] !== '+') return;  // skip - it's a location
      const locationSetID = prop.id;
      const area = thiz._knownLocationSets.get(locationSetID);
      if (area) {
        result[locationSetID] = area;
      }
    });

    // locations included
    hits.forEach(prop => {
      if (prop.id[0] === '+') return;   // skip - it's a locationset
      const locationID = prop.id;
      const included = thiz._locationIncludedIn.get(locationID);
      (included || []).forEach(locationSetID => {
        const area = thiz._knownLocationSets.get(locationSetID);
        if (area) {
          result[locationSetID] = area;
        }
      });
    });

    // locations excluded
    hits.forEach(prop => {
      if (prop.id[0] === '+') return;   // skip - it's a locationset
      const locationID = prop.id;
      const excluded = thiz._locationExcludedIn.get(locationID);
      (excluded || []).forEach(locationSetID => {
        delete result[locationSetID];
      });
    });

    return result;
  }


  /**