code: import grama as gr
  import pandas as pd
  import matplotlib.pyplot as plt
  
  from grama.models import make_cantilever_beam
  md_beam = make_cantilever_beam()
  
  md_beam >> \
      gr.ev_sinews(n_density=50, n_sweeps=10, df_det="nom", skip=True) >> \
      gr.pt_auto()
  plt.savefig("../images/ex_beam_sinews_doe.png")
  
  md_beam >> \
      gr.ev_sinews(n_density=50, n_sweeps=10, df_det="nom", skip=False) >> \
      gr.pt_auto()
  plt.savefig("../images/ex_beam_sinews_res.png")
  
apis: matplotlib.pyplot.savefig