code: def grid_points_in_poly(shape, verts, binarize=True):
      """Test whether points on a specified grid are inside a polygon.
  
      For each ``(r, c)`` coordinate on a grid, i.e. ``(0, 0)``, ``(0, 1)`` etc.,
      test whether that point lies inside a polygon.
  
      You can control the output type with the `binarize` flag. Please refer to its
      documentation for further details.
  
      Parameters
      ----------
      shape : tuple (M, N)
          Shape of the grid.
      verts : (V, 2) array
          Specify the V vertices of the polygon, sorted either clockwise
          or anti-clockwise. The first point may (but does not need to be)
          duplicated.
      binarize: bool
          If `True`, the output of the function is a boolean mask.
          Otherwise, it is a labeled array. The labels are:
          O - outside, 1 - inside, 2 - vertex, 3 - edge.
  
      See Also
      --------
      points_in_poly
  
      Returns
      -------
      mask : (M, N) ndarray
          If `binarize` is True, the output is a boolean mask. True means the
          corresponding pixel falls inside the polygon.
          If `binarize` is False, the output is a labeled array, with pixels
          having a label between 0 and 3. The meaning of the values is:
          O - outside, 1 - inside, 2 - vertex, 3 - edge.
  
      """
      output = _grid_points_in_poly(shape, verts)
      if binarize:
          output = output.astype(bool)
      return output
  
label_desc: Use image node_id 1 for calling a global function with example usage: grid_points_in_poly(shape, verts, binarize) and returns: output