Reverse azimuth correction, so it starts from reference place

projects/hazdev-ng-geoserve-output/src/lib/distance-azimuth.pipe.spec.ts

@@ -49,7 +49,7 @@ describe('DistanceAzimuthPipe', () => {
     });
     it('should accept a referencePlace', () => {
       expect(pipe.transform(place, referencePlace)).toEqual(
-        '447.3 km (277.9 mi) N'
+        '447.3 km (277.9 mi) S'
       );
     });
   });

projects/hazdev-ng-geoserve-output/src/lib/distance-azimuth.ts

@@ -13,12 +13,12 @@ export interface DistanceAzimuth {
  * Compute distance and azimuth from place to reference place.
  *
  * @param place
- *     starting place.
+ *     destination place.
  * @param referencePlace
- *     optional destination place.
+ *     optional starting place.
  * @return
  *     When reference place is specified:
- *       calculate direction and azimuth from place to referencePlace.
+ *       calculate direction and azimuth from referencePlace to place.
  *     Otherwise return distance and azimuth from place.
  */
 export function getDistanceAzimuth(
@@ -32,13 +32,13 @@ export function getDistanceAzimuth(
     const distAz = calculator.azimuth(
       {
         elv: 0,
-        lat: place.latitude,
-        lng: place.longitude
+        lat: referencePlace.latitude,
+        lng: referencePlace.longitude
       },
       {
         elv: 0,
-        lat: referencePlace.latitude,
-        lng: referencePlace.longitude
+        lat: place.latitude,
+        lng: place.longitude
       }
     );
     azimuth = distAz.azimuth;