code: def dtype(cls, dataset, dimension):
      name = dataset.get_dimension(dimension, strict=True).name
      data = dataset.data[name]
      if util.isscalar(data):
          return np.array([data]).dtype
      else:
          return data.dtype
  
imports: import sys
  import warnings
  import numpy
  import param
  from ..None import util
  from ..element import Element
  from ..ndmapping import NdMapping
  from .util import finite_range
label_desc: Use image node_id 13 for calling the Interface obj's underlying member method code with example usage: obj.dtype(cls, dataset, dimension) and returns: np, data