composite2.gv

digraph composite2 {
  # Intialization of graph attributes
  graph [overlap = false bgcolor=transparent]

  # Initialization of node attributes
  node [shape = circle,
        fontname = Helvetica,
        color = gray80,
        type = box,
        fixedsize = true]


  # Node statements
  Composite [width=3, height=1, shape=hexagon, color=gray80];

  node [width=1, shape=square, color=gray10]
  I1; I2; I3; I4; 

  # Initialization of edge attributes
  edge [color = gray50, rel = yields]

  # Edge statements
  I1 -> Composite [style=dashed]; I2 -> Composite; I3 -> Composite; I4 -> Composite;

  }