1 files changed, 18 insertions, 0 deletions
diff --git a/static/js/utils.js b/static/js/utils.js
new file mode 100644
index 0000000..83e6397
--- /dev/null
+++ b/static/js/utils.js
@@ -0,0 +1,18 @@
+function deg2rad(deg) {
+    return deg * (Math.PI/180)
+}
+function getDistanceFromLatLon(item1, item2) {
+    lat1 = item1['latitude']; lon1 = item1['longitude'];
+    lat2 = item2['latitude']; lon2 = item2['longitude'];
+    var R = 3958.8; // Radius of the earth 
+    var dLat = deg2rad(lat2-lat1); 
+    var dLon = deg2rad(lon2-lon1); 
+    var a = 
+      Math.sin(dLat/2) * Math.sin(dLat/2) +
+      Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * 
+      Math.sin(dLon/2) * Math.sin(dLon/2)
+      ; 
+    var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); 
+    var d = R * c; // Distance in mi
+    return d;
+}
+\ No newline at end of file