docs: def voxel_loop(self):
          '''iterator that loops through each voxel and yields the coords and time series as a tuple'''
          # Prob not the most efficient, but the best I can do for now:
          for x in xrange(len(self.data)):
              for y in xrange(len(self.data[x])):
                  for z in xrange(len(self.data[x][y])):
                      yield ((x,y,z),self.data[x][y][z])