text: import rlpy.Tools.results as rt
  
  paths = { "LSPI": "./Results/Tests/gridworld/LSPI",
  	"PSRL" : "./Results/Tests/gridworld/PSRL",
       "UCRL" : "./Results/Tests/gridworld/UCRL",
       "SARSA" : "./Results/Tests/gridworld/SARSA"}
  
  merger = rt.MultiExperimentResults(paths)
  fig = merger.plot_avg_sem("learning_steps","return")
  rt.save_figure(fig,"./Results/Tests/gridworld/plot.pdf")
  