class_docstr: Scale a tensor representing points
class_docstr_tok: ["Scale","a","tensor","representing","points"]
code: def setups(self, dl):
      res = first(dl.do_item(None), risinstance(TensorPoint))
      if res is not None:
          self.c = res.numel()
  
imports: from __future__ import annotations
  from ..torch_basics import *
  from ..data.all import *
  from PIL import Image
  from matplotlib import patches, patheffects
label_desc: Use image node_id 4 for calling the PointScaler obj's underlying member method code with example usage: obj.setups(dl) without return types