content: """
  Display ROI Labels
  ==================
  
  Using PySurfer you can plot Freesurfer cortical labels on the surface
  with a large amount of control over the visual representation.
  
  """
  import os
  from surfer import Brain
  
  print(__doc__)
  
  subject_id = "fsaverage"
  hemi = "lh"
  surf = "smoothwm"
  brain = Brain(subject_id, hemi, surf)
  
  # If the label lives in the normal place in the subjects directory,
  # you can plot it by just using the name
  brain.add_label("BA1")
  
  # Some labels have an associated scalar value at each ID in the label.
  # For example, they may be probabilistically defined. You can threshold
  # what vertices show up in the label using this scalar data
  brain.add_label("BA1", color="blue", scalar_thresh=.5)
  
  # Or you can give a path to a label in an arbitrary location
  subj_dir = os.environ["SUBJECTS_DIR"]
  label_file = os.path.join(subj_dir, subject_id,
                            "label", "%s.MT.label" % hemi)
  brain.add_label(label_file)
  
  # By default the label is 'filled-in', but you can
  # plot just the label boundaries
  brain.add_label("BA44", borders=True)
  
  # You can also control the opacity of the label color
  brain.add_label("BA6", alpha=.7)
  
  # Finally, you can plot the label in any color you want.
  brain.show_view(dict(azimuth=-42, elevation=105, distance=225,
                       focalpoint=[-30, -20, 15]))
  
  # Use any valid matplotlib color.
  brain.add_label("V1", color="steelblue", alpha=.6)
  brain.add_label("V2", color="#FF6347", alpha=.6)
  brain.add_label("entorhinal", color=(.2, 1, .5), alpha=.6)
  