show local flights (departure == arrival) as points

index.html

@@ -96,19 +96,31 @@
                 const toLongitude = parseFloat(toAirport.longitude);
                 const toLatitude = parseFloat(toAirport.latitude);
 
+                // if from == to, draw a point
+                var geometry;
+                if(fromAirport == toAirport) {
+                    geometry = {
+                        type: 'Point',
+                        coordinates: [fromLongitude, fromLatitude]
+                    };
+                }
+                else {
+                    geometry = {
+                        type: 'LineString',
+                        coordinates: [
+                            [fromLongitude, fromLatitude],
+                            [toLongitude, toLatitude]
+                        ]
+                    };
+                }
+
                 return {
                     type: 'Feature',
                     properties: {
                         from,
                         to
                     },
-                    geometry: {
-                        type: 'LineString',
-                        coordinates: [
-                            [fromLongitude, fromLatitude],
-                            [toLongitude, toLatitude]
-                        ]
-                    }
+                    geometry: geometry
                 };
             });
 
@@ -129,10 +141,21 @@
                     'line-cap': 'round'
                 },
                 paint: {
-                    'line-color': '#bd34eb',
-                    'line-width': 4
+                    'line-color': '#ce42f5',
+                    'line-width': 2
                 }
             });
+
+            map.addLayer({
+                id: 'points',
+                type: 'circle',
+                source: 'routes',
+                paint: {
+                    'circle-radius': 5,
+                    'circle-color': '#f00'
+                },
+                filter: ['==', '$type', 'Point']
+            });
         }
 
         function updateMap(csvData) {