docs: def array(self, size_chunk, start, bytesize):
          ''' Read part of the binary file
  
          Args:
              size_chunk (int) : Size of the chunk to read
              start (int): Starting byte
              bytesize (int): Ending byte
  
          Returns:
              (np.array): array of the corresponding values
          '''
  
          with open(self.img, 'rb') as f1:
              f1.seek(self.start_byte + start * self.bytesize)
              data = f1.read(size_chunk * self.bytesize)
              Z = np.fromstring(data, dtype=self.dtype, count=size_chunk)
              if self.grid == 'LOLA':
                  return Z * float(self.SCALING_FACTOR)
              else:
                  return Z