code: def _sample_plate_carree_scalar_field():
      return np.array([2, 4, 2, 1.2, 3, 1.2])
  
file_path: cartopy/lib/cartopy/tests/test_vector_transform.py
imports: import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_equal
  import pytest
  import cartopy.crs
  import cartopy.vector_transform
label_desc: Use image node_id 2 for calling a global function with example usage: _sample_plate_carree_scalar_field() and returns: np