private void setUpChartArea() {
    Viewport currentViewport = new Viewport(chart.getMaximumViewport());

    currentViewport.left = (float) (chart.getMaximumViewport().left * 1.9);
    currentViewport.right = (float) (chart.getMaximumViewport().right * 0.1);

    chart.setCurrentViewport(currentViewport);

    chart.setZoomEnabled(false);
  }