class_docstr: Class representing a simple nonlinear least squares model.
docstr: Set Z into `self`
  
  Returns
  -------
  None
docstr_tok: ["Set","Z","into","`","self","`","Returns","--","--","--","-","None"]
code: def getZ(self):
      """Set Z into `self`
  
      Returns
      -------
      None
      """
      self._Z = self.grad(self.design, self.theta)
  
file_path: nipy/nipy/algorithms/statistics/models/nlsmodel.py
imports: import numpy
  import numpy.linalg
  from .model import Model
label_desc: Use image node_id 4 for calling the NLSModel obj's underlying member method code with example usage: obj.getZ() without return types