code: def minard_graph():
      data1 = """\
  24.0,54.9,340000,A,1
  24.5,55.0,340000,A,1
  25.5,54.5,340000,A,1
  26.0,54.7,320000,A,1
  27.0,54.8,300000,A,1
  28.0,54.9,280000,A,1
  28.5,55.0,240000,A,1
  29.0,55.1,210000,A,1
  30.0,55.2,180000,A,1
  30.3,55.3,175000,A,1
  32.0,54.8,145000,A,1
  33.2,54.9,140000,A,1
  34.4,55.5,127100,A,1
  35.5,55.4,100000,A,1
  36.0,55.5,100000,A,1
  37.6,55.8,100000,A,1
  37.7,55.7,100000,R,1
  37.5,55.7,98000,R,1
  37.0,55.0,97000,R,1
  36.8,55.0,96000,R,1
  35.4,55.3,87000,R,1
  34.3,55.2,55000,R,1
  33.3,54.8,37000,R,1
  32.0,54.6,24000,R,1
  30.4,54.4,20000,R,1
  29.2,54.3,20000,R,1
  28.5,54.2,20000,R,1
  28.3,54.3,20000,R,1
  27.5,54.5,20000,R,1
  26.8,54.3,12000,R,1
  26.4,54.4,14000,R,1
  25.0,54.4,8000,R,1
  24.4,54.4,4000,R,1
  24.2,54.4,4000,R,1
  24.1,54.4,4000,R,1"""
      data2 = """\
  24.0,55.1,60000,A,2
  24.5,55.2,60000,A,2
  25.5,54.7,60000,A,2
  26.6,55.7,40000,A,2
  27.4,55.6,33000,A,2
  28.7,55.5,33000,R,2
  29.2,54.2,30000,R,2
  28.5,54.1,30000,R,2
  28.3,54.2,28000,R,2"""
      data3 = """\
  24.0,55.2,22000,A,3
  24.5,55.3,22000,A,3
  24.6,55.8,6000,A,3
  24.6,55.8,6000,R,3
  24.2,54.4,6000,R,3
  24.1,54.4,6000,R,3"""
      cities = """\
  24.0,55.0,Kowno
  25.3,54.7,Wilna
  26.4,54.4,Smorgoni
  26.8,54.3,Moiodexno
  27.7,55.2,Gloubokoe
  27.6,53.9,Minsk
  28.5,54.3,Studienska
  28.7,55.5,Polotzk
  29.2,54.4,Bobr
  30.2,55.3,Witebsk
  30.4,54.5,Orscha
  30.4,53.9,Mohilow
  32.0,54.8,Smolensk
  33.2,54.9,Dorogobouge
  34.3,55.2,Wixma
  34.4,55.5,Chjat
  36.0,55.5,Mojaisk
  37.6,55.8,Moscou
  36.6,55.3,Tarantino
  36.5,55.0,Malo-Jarosewii"""
  
      c = {}
      for line in cities.split("\n"):
          x, y, name = line.split(",")
          c[name] = (float(x), float(y))
  
      g = []
  
      for data in [data1, data2, data3]:
          G = nx.Graph()
          i = 0
          G.pos = {}  # location
          G.pop = {}  # size
          last = None
          for line in data.split("\n"):
              x, y, p, r, n = line.split(",")
              G.pos[i] = (float(x), float(y))
              G.pop[i] = int(p)
              if last is None:
                  last = i
              else:
                  G.add_edge(i, last, **{r: int(n)})
                  last = i
              i = i + 1
          g.append(G)
  
      return g, c
  
label_desc: Use image node_id 1 for calling a global function with example usage: minard_graph() and returns: g,  c