docstr: Note that this is a poor estimate of the Ishigami
  function.
docstr_tok: ["Note","that","this","is","a","poor","estimate","of","the","Ishigami","function","."]
code: def test_regression_morris_scaled(self, set_seed):
      """Note that this is a poor estimate of the Ishigami
      function.
      """
      set_seed
      param_file = "src/SALib/test_functions/params/Ishigami.txt"
      problem = read_param_file(param_file)
      param_values = morris_sampler(
          problem, 10000, 4, optimal_trajectories=None
      )
  
      Y = Ishigami.evaluate(param_values)
  
      Si = morris.analyze(
          problem,
          param_values,
          Y,
          conf_level=0.95,
          scaled=True,
          print_to_console=False,
          num_levels=4,
      )
  
      assert_allclose(
          Si["mu_star"],
          [0.532657, 0.658405, 0.43654],
          atol=0,
          rtol=1e-5,
      )
  
imports: from pytest import fixture, mark
  import numpy
  from numpy.testing import assert_allclose
  from SALib.analyze import delta, dgsm, fast, rbd_fast, sobol, morris, hdmr
  from SALib.sample import fast_sampler, finite_diff, latin, saltelli
  from SALib.sample.morris import sample
  from SALib.test_functions import Ishigami
  from SALib.test_functions import linear_model_1
  from SALib.test_functions import linear_model_2
  from SALib.util import read_param_file
label_desc: Use image node_id 2 for calling the TestMorris obj's underlying member method code with example usage: obj.test_regression_morris_scaled(set_seed) without return types