t(d,chartBOLD)}		
    },		
    axis: {		
      x: {		
        type: 'category',
        label: 'Subject'	
      },		
      y: {
        label: 'spatial correlation',
        tick: {
          format: d3.format('0.2f')
        }
      }
    },		
    zoom: {		
      enabled: true		
    },		
    selection: {		
      enabled: true		
    }		
  });		

  // Chart of frame displacement and number of volumes
  var chartFD = c3.generate({
    bindto: '#chart-FD',
    data: {
      x: 'Run',
