code: def SAS(self):
      
      if self.x is None:
        self.x = np.arange(self.dx/2., self.dx * self.qs.shape[0], self.dx)
      if self.filename:
        # Define the (scalar) elastic thickness
        self.Te = self.configGet("float", "input", "ElasticThickness")
        # Define a stress-based qs = q0
        self.qs = self.q0.copy()
        # Remove self.q0 to avoid issues with multiply-defined inputs
        # q0 is the parsable input to either a qs grid or contains (x,(y),q)
        del self.q0
      if self.dimension == 2:
        if self.y is None:
          self.y = np.arange(self.dy/2., self.dy * self.qs.shape[0], self.dy)
        # Define a stress-based qs = q0
        # But only if the latter has not already been defined
        # (e.g., by the getters and setters)
        try:
          self.qs
        except:
          self.qs = self.q0.copy()
          # Remove self.q0 to avoid issues with multiply-defined inputs
          # q0 is the parsable input to either a qs grid or contains (x,(y),q)
          del self.q0
        from scipy.special import kei
docs: Set-up for the rectangularly-gridded superposition of analytical solutions 
      method for solving flexure