code: def make_fake_data():
      con_imgs = [
          make_xyz_image(
              np.random.normal(0, 1, size=SIZE), AFFINE, "talairach"
          )
          for i in range(NSUBJ)
      ]
      parcel_img = make_xyz_image(
          np.random.randint(NLABELS, size=SIZE), AFFINE, "talairach"
      )
      return con_imgs, parcel_img
  
file_path: nipy/nipy/algorithms/group/tests/test_parcel_analysis.py
imports: import os
  import numpy
  import pytest
  from numpy.testing import assert_array_equal
  from ....core.image.image_spaces import make_xyz_image, xyz_affine
  from ..parcel_analysis import ParcelAnalysis, _smooth_image_pair, parcel_analysis
label_desc: Use image node_id 2 for calling a global function with example usage: make_fake_data() and returns: con_imgs,  parcel_img