some bug fixes

rowers/utils.py

@@ -77,11 +77,14 @@ def geo_distance(lat1,lon1,lat2,lon2):
 
 
 def isbreakthrough(delta,cpvalues,p0,p1,p2,p3,ratio):
-  pwr = p0/(1+delta/p2)
-  pwr += p1/(1+delta/p3)
+  pwr = abs(p0)/(1+(delta/abs(p2)))
+  pwr += abs(p1)/(1+(delta/abs(p3)))
 
   pwr *= ratio
 
+  delta = delta.values
+  cpvalues = cpvalues.values
+
   res = np.sum(cpvalues>pwr)
 
   btdf = pd.DataFrame(
@@ -92,6 +95,7 @@ def isbreakthrough(delta,cpvalues,p0,p1,p2,p3,ratio):
     }
   )
 
+
   btdf.sort_values('delta',axis=0,inplace=True)