code: def test_radius_neighbors_graph(self):
      x = [[0], [3], [1]]
      df = pdml.ModelFrame(x)
  
      result = df.neighbors.radius_neighbors_graph(1.5)
      expected = neighbors.radius_neighbors_graph(x, 1.5)
  
      self.assert_numpy_array_almost_equal(
          result.toarray(), expected.toarray()
      )
  
file_path: pandas-ml/pandas_ml/skaccessors/test/test_neighbors.py
imports: import pytest
  import sklearn.datasets
  import sklearn.neighbors
  import pandas_ml
  import pandas_ml.util.testing
label_desc: Use image node_id 3 for calling the TestNeighbors obj's underlying member method code with example usage: obj.test_radius_neighbors_graph() without return types