list course view

rowers/courses.py

@@ -14,6 +14,8 @@ from utils import myqueue
 from matplotlib import path
 import xml.etree.ElementTree as et
 
+import pandas as pd
+
 ns = {'opengis': 'http://www.opengis.net/kml/2.2'}
 
 import django_rq
@@ -34,8 +36,59 @@ class InvalidTrajectoryError(Exception):
     def __str__(self):
 	return repr(self.value)
 
+def polygon_coord_center(polygon):
+
+    points = GeoPoint.objects.filter(polygon=polygon).order_by("order_in_poly")
+
+    latitudes = pd.Series([p.latitude for p in points])
+    longitudes = pd.Series([p.longitude for p in points])
+    
+    return latitudes.mean(), longitudes.mean()
+
+def course_coord_center(course):
+
+    polygons = GeoPolygon.objects.filter(course=course).order_by("order_in_course")
+
+    latitudes = []
+    longitudes = []
+
+    for p in polygons:
+        latitude,longitude = polygon_coord_center(p)
+        latitudes.append(latitude)
+        longitudes.append(longitude)
+
+    latitude = pd.Series(latitudes).median()
+    longitude = pd.Series(longitudes).median()
+
+    coordinates = pd.DataFrame({
+        'latitude':latitudes,
+        'longitude':longitudes,
+        })
+    
+    return latitude,longitude,coordinates
+
+def course_coord_maxmin(course):
+
+    polygons = GeoPolygon.objects.filter(course=course).order_by("order_in_course")
+
+    latitudes = []
+    longitudes = []
+
+    for p in polygons:
+        latitude,longitude = polygon_coord_center(p)
+        latitudes.append(latitude)
+        longitudes.append(longitude)
+
+    lat_min = pd.Series(latitudes).min()
+    lat_max = pd.Series(latitudes).max()
+    long_min = pd.Series(longitudes).min()
+    long_max = pd.Series(longitudes).max()
+
+
+    return lat_min,lat_max,long_min,long_max
+    
 def polygon_to_path(polygon):
-    points = GeoPoint.objects.filter(polygon==polygon).order_by(order_in_polygon)
+    points = GeoPoint.objects.filter(polygon==polygon).order_by("order_in_polygon")
     s = []
     for point in points:
         s.append([point.latitude,point.longitude])