final Class timePeriodClass = getTimePeriodClass(getDomainPeriodType());
if (series == null)
{
series = new TimeSeries(seriesName, timePeriodClass);
timeSeriesDataset.addSeries(series);
}
final RegularTimePeriod regularTimePeriod =
RegularTimePeriod.createInstance(timePeriodClass, timeValue, TimeZone.getDefault());
final TimeSeriesDataItem timeSeriesDataItem = new TimeSeriesDataItem(regularTimePeriod, value);