Chronoscope.initialize();
mockDsFactory = new MockDatasetFactory(Chronoscope.get().getComponentFactory().getDatasetFactory());
final Dataset[] ds = new Dataset[2];
ds[0] = Chronoscope.get().getDatasetReader().createDatasetFromJson(new GwtJsonDataset(getJson("unratedata")));
ds[1] = mockDsFactory.getBasicDataset();
final ChartPanel chartPanel = Chronoscope
.createTimeseriesChart(ds, chartWidth, chartHeight);
chartPanel.setReadyListener(new ViewReadyCallback() {
public void onViewReady(final View view) {
final Marker m = new Marker(
ds[0].getDomainExtrema().midpoint(), "A", 0);
m.addOverlayClickListener(new OverlayClickListener() {
public void onOverlayClick(Overlay overlay, int x, int y) {