}
coverageChart = new ProteinSequencePanel(Color.WHITE).getSequencePlot(this, new JSparklinesDataset(sparkLineDataSeriesCoverage), blocTooltips, true, true);
// make sure that the range is the same for both charts (coverage and ptm)
coverageChart.getChart().addChangeListener(new ChartChangeListener() {
@Override
public void chartChanged(ChartChangeEvent cce) {
if (ptmChart != null) {
Range range = ((CategoryPlot) coverageChart.getChart().getPlot()).getRangeAxis().getRange();
((CategoryPlot) ptmChart.getChart().getPlot()).getRangeAxis().setRange(range);