class_docstr: The base volumetric structure.
  
  This object represents numerical values embedded in a
  3-dimensional world space (called a field in physics and
  engineering)
  
  This is an abstract base class: it defines the interface, but not
  the logics.
  
  Attributes
  ----------
  
  world_space: string
      World space the data is embedded in. For instance `mni152`.
  metadata: dictionary
      Optional, user-defined, dictionary used to carry around
      extra information about the data as it goes through
      transformations. The consistency of this information is not
      maintained as the data is modified.
docstr: Implement this method to put in the logic of applying a
  transformation on the image class.
docstr_tok: ["Implement","this","method","to","put","in","the","logic","of","applying","a","transformation","on","the","image","class","."]
code: def _apply_transform(self, w2w_transform):
      """Implement this method to put in the logic of applying a
      transformation on the image class.
      """
      raise NotImplementedError
  
file_path: nipy/nipy/labs/datasets/volumes/volume_field.py
imports: from ..transforms.transform import CompositionError
label_desc: Use image node_id 6 for calling the VolumeField obj's underlying member method code with example usage: obj._apply_transform(w2w_transform) without return types