class_docstr: This is a decorator class used later to construct nice names
code: def __init__(self, f):
      self.f = f
  
imports: import numpy
  import pandas
  from scipy import stats
  from scipy.optimize import newton
  from scipy.integrate import cumtrapz
label_desc: Use image node_id 1 to create a new coeff_func object  with example: obj = coeff_func(f)