Upload app.py

app.py

@@ -1,3 +1,5 @@
+import traceback
+
 import os
 import json
 import pathlib
@@ -21,6 +23,7 @@ import openmeteo_requests
 import requests_cache
 from retry_requests import retry
 
+from geopy import distance
 from geopy.geocoders import Nominatim
 geolocator = Nominatim(user_agent='FreeLetzWeather')
 
@@ -67,6 +70,37 @@ gpx_path = pathlib.Path(gpx_file)
 with open('weather_icons_custom.json', 'r') as file:
 	icons = json.load(file)
 
+def mid_point(df):
+
+    def add_ele(x):
+        return elevation_data.get_elevation(x['latitude'], x['longitude'], 0)
+
+    df['srtm'] = df.apply(lambda x: add_ele(x), axis=1)
+
+    # Distance estimation function
+
+    def eukarney(lat1, lon1, alt1, lat2, lon2, alt2):
+        p1 = (lat1, lon1)
+        p2 = (lat2, lon2)
+        karney = distance.distance(p1, p2).m
+        return np.sqrt(karney**2 + (alt2 - alt1)**2)
+
+    # Create shifted columns in order to facilitate distance calculation
+
+    df['lat_shift'] = df['latitude'].shift(periods=-1).fillna(df['latitude'])
+    df['lon_shift'] = df['longitude'].shift(periods=-1).fillna(df['longitude'])
+    df['alt_shift'] = df['srtm'].shift(periods=-1).fillna(df['srtm'])
+
+    # Apply the distance function to the dataframe
+
+    df['distances'] = df.apply(lambda x: eukarney(x['latitude'], x['longitude'], x['srtm'], x['lat_shift'], x['lon_shift'], x['alt_shift']), axis=1).fillna(0)
+    df['distance'] = df['distances'].cumsum().round(decimals = 0).astype(int)
+
+    gpx_dict = df.loc[df.distance==df.distance.median()].iloc[-1].to_dict()
+    print(gpx_dict)
+
+    return gpx_dict
+
 def map_icons(df):
 
 	code = df['weather_code']
@@ -234,7 +268,9 @@ def coor_gpx(gpx):
                         'elevation': p.elevation,
                 })
         df_gpx = pd.DataFrame.from_records(points)
-        gpx_dict = df_gpx.iloc[-1].to_dict()
+        #gpx_dict = df_gpx.iloc[-1].to_dict()
+        gpx_dict = mid_point(df_gpx)
+
         params['latitude'] = gpx_dict['latitude']
         params['longitude'] = gpx_dict['longitude']
         params['elevation'] = gpx_dict['elevation']
@@ -242,7 +278,7 @@ def coor_gpx(gpx):
         lon = params['longitude']
 
         if params['elevation'] == None:
-            params['elevation'] = int(round(elevation_data.get_elevation(lat, lon), 0))
+            params['elevation'] = int(round(gpx_dict['srtm'], 0))
         else:
             params['elevation'] = int(round(params['elevation'], 0))
 
@@ -267,7 +303,8 @@ def coor_gpx(gpx):
 
     try:
         parse_gpx(gpx)
-    except:
+    except Exception as error:
+        traceback.print_exc()
         parse_gpx(gpx_path)
         global gpx_name
         gpx_name = '<b style="color: firebrick;">ERROR: Not a valid GPX file. Upload another file.</b>'