class_docstr: The log transform as a link function:
  
  g(x) = log(x)
docstr: Log transform
  
  g(x) = log(x)
  
  INPUTS:
     x   -- mean parameters
  
  OUTPUTS: z
     z   -- log(x)
docstr_tok: ["Log","transform","g","(","x",")","=","log","(","x",")","INPUTS",":","x","--","mean","parameters","OUTPUTS",":","z","z","--","log","(","x",")"]
code: def __call__(self, x, **extra):
      """
      Log transform
  
      g(x) = log(x)
  
      INPUTS:
         x   -- mean parameters
  
      OUTPUTS: z
         z   -- log(x)
  
      """
      x = self.clean(x)
      return np.log(x)
  
imports: import numpy
  import scipy.stats
label_desc: Use image node_id 2 for calling the Log obj's underlying member method code with example usage: obj.__call__(x) and returns: np