{
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    {
      "execution_count": null, 
      "cell_type": "code", 
      "source": [
        "%matplotlib inline"
      ], 
      "outputs": [], 
      "metadata": {
        "collapsed": false
      }
    }, 
    {
      "source": [
        "\n# Visualize subject head movement\n\n\nShow how subjects move as a function of time.\n\n"
      ], 
      "cell_type": "markdown", 
      "metadata": {}
    }, 
    {
      "execution_count": null, 
      "cell_type": "code", 
      "source": [
        "# Authors: Eric Larson <larson.eric.d@gmail.com>\n#\n# License: BSD (3-clause)\n\nfrom os import path as op\n\nimport mne\n\nprint(__doc__)\n\ndata_path = op.join(mne.datasets.testing.data_path(verbose=True), 'SSS')\n\npos = mne.chpi.read_head_pos(op.join(data_path, 'test_move_anon_raw.pos'))"
      ], 
      "outputs": [], 
      "metadata": {
        "collapsed": false
      }
    }, 
    {
      "source": [
        "Visualize the subject head movements as traces:\n\n"
      ], 
      "cell_type": "markdown", 
      "metadata": {}
    }, 
    {
      "execution_count": null, 
      "cell_type": "code", 
      "source": [
        "mne.viz.plot_head_positions(pos, mode='traces')"
      ], 
      "outputs": [], 
      "metadata": {
        "collapsed": false
      }
    }, 
    {
      "source": [
        "Or we can visualize them as a continuous field (with the vectors pointing\nin the head-upward direction):\n\n"
      ], 
      "cell_type": "markdown", 
      "metadata": {}
    }, 
    {
      "execution_count": null, 
      "cell_type": "code", 
      "source": [
        "mne.viz.plot_head_positions(pos, mode='field')"
      ], 
      "outputs": [], 
      "metadata": {
        "collapsed": false
      }
    }
  ], 
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      "display_name": "Python 2", 
      "name": "python2", 
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    }, 
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