code: def reorient_on_axis(bvecs, current_ornt, new_ornt, axis=0):
      return gradients.reorient_on_axis(
          bvecs=bvecs,
          current_ornt=current_ornt,
          new_ornt=new_ornt,
          axis=axis,
      )
  
file_path: dipy/dipy/io/bvectxt.py
imports: from os.path import splitext
  import numpy
  from dipy.core import gradients
  from dipy.utils.deprecator import deprecate_with_version
label_desc: Use image node_id 4 for calling a global function with example usage: reorient_on_axis(bvecs, current_ornt, new_ornt, axis) and returns: gradients