better maps splines

rowers/interactiveplots.py

@@ -1868,7 +1868,7 @@ def course_map(course):
     var mymap = L.map('map_canvas', {{
               center: [{latmean}, {lonmean}],
               zoom: 13,
-              layers: [streets, satellite]
+              layers: [outdoors]
               }}).setView([{latmean},{lonmean}], 13);
 
     var navionics = new JNC.Leaflet.NavionicsOverlay({{

rowers/models.py

@@ -25,7 +25,8 @@ import re
 import pytz
 from django_countries.fields import CountryField
 
-from scipy.interpolate import splprep, splev, CubicSpline
+from scipy.interpolate import splprep, splev, CubicSpline,interp1d
+
 import numpy as np
 
 import shutil
@@ -438,8 +439,10 @@ def course_spline(coordinates):
     tnew = np.linspace(0,1,100)
 
     try:
-        latnew = CubicSpline(t,latitudes,bc_type='clamped')(tnew)
-        lonnew = CubicSpline(t,longitudes,bc_type='clamped')(tnew)
+        #latnew = CubicSpline(t,latitudes,bc_type='not-a-knot')(tnew)
+        #lonnew = CubicSpline(t,longitudes,bc_type='not-a-knot')(tnew)
+        latnew = interp1d(t,latitudes)(tnew)
+        lonnew = interp1d(t,longitudes)(tnew)
     except ValueError:
         latnew = latitudes
         lonnew = longitudes