code: def _blank_drift(frametimes):
      """Create the blank drift matrix
  
      Returns
      -------
      np.ones_like(frametimes)
      """
      return np.reshape(
          np.ones_like(frametimes), (np.size(frametimes), 1)
      )
  
file_path: nipy/nipy/modalities/fmri/design_matrix.py
imports: from warnings import warn
  import numpy
  from .hemodynamic_models import _orthogonalize, compute_regressor
label_desc: Use image node_id 3 for calling a global function with example usage: _blank_drift(frametimes) and returns: np