public void displayDataItems(DataItems items) {
if (items == null) return;
// TimeSeriesCollection tsc = new TimeSeriesCollection();
XYSeriesCollection tsc = new XYSeriesCollection();
// TimeSeries ts = new TimeSeries("序列值");
XYSeries ts = new XYSeries("序列值");
int len = items.getLength();
for (int i = 0; i < len; i++) {
DataItem item = items.getElementAt(i);
Date date = item.getTime();
double val = Double.parseDouble(item.getData());
// ts.addOrUpdate(items.getTimePeriodOfElement(i), val);
ts.add(i, val);
}
tsc.addSeries(ts);
chart.getXYPlot().setDataset(tsc);
}
