original_docstring: 
          Calculate a histogram of TC genesis occurrences given a set
          of tracks
  
          :param tracks: Collection of :class:`Track` objects.
          
docstring: Calculate a histogram of TC genesis occurrences given a set
  of tracks
docstring_tokens: Calculate a histogram of TC genesis occurrences given a set of tracks
code: def calculate(self, tracks):
          """
          Calculate a histogram of TC genesis occurrences given a set
          of tracks
  
          :param tracks: Collection of :class:`Track` objects.
          """
  
          lon = np.array([])
          lat = np.array([])
  
          for t in tracks:
              lon = np.append(lon, t.Longitude[0])
              lat = np.append(lat, t.Latitude[0])
          histogram, x, y = np.histogram2d(lon, lat,
                                           [self.lon_range,
                                            self.lat_range],
                                           normed=False)
          return histogram
code_tokens: def calculate ( self , tracks ) : lon = np . array ( [ ] ) lat = np . array ( [ ] ) for t in tracks : lon = np . append ( lon , t . Longitude [ 0 ] ) lat = np . append ( lat , t . Latitude [ 0 ] ) histogram , x , y = np . histogram2d ( lon , lat , [ self . lon_range , self . lat_range ] , normed = False ) return histogram
short_docstring: Calculate a histogram of TC genesis occurrences given a set
  of tracks
short_docstring_tokens: Calculate a histogram of TC genesis occurrences given a set of tracks
comment: """
          Calculate a histogram of TC genesis occurrences given a set
          of tracks
  
          :param tracks: Collection of :class:`Track` objects.
          """