def FileName(dir,stat,alg,avg,min,max):
  """get svg graph file name from dimensions.

  For stat use 'perf|size(min|avg|max)' used for the y axis.
  Use 't' for the dimension used as the timeseries label.
  Use 'x' for dimension used as x axis.
  Use 'o' for the optimal value for the algorithm.
  Use 's' for the standard value for the algorithm.
  """
  #print("%r %r %r %r" % (alg, avg, min, max))
  return '%s/%s-%s-%s-%s-%s.svg' % (dir, stat, alg, avg, min, max)