FixedMillisecond

[Juergen Hoffmann]

Hi all,

can someone try to tell me what i am doing wrong here?

private void drawJFreeChart(String iface, double[] tiv, double[] tov)
{
long[] dates = DataStore.getDateTimes(iface);
BasicTimeSeries i = new BasicTimeSeries("bla", Millisecond.class);
BasicTimeSeries o = new BasicTimeSeries("fasel", Millisecond.class);
for (int i = 0; i < dates.length; i++)
{
i.add(new FixedMillisecond(dates), tiv);
o.add(new FixedMillisecond(dates), tov);
}
TimeSeriesCollection t = new TimeSeriesCollection();
t.addSeries(i);
t.addSeries(o);
JFreeChart jfc = ChartFactory.createTimeSeriesChart("Karte " + iface, "dates",
"values", t, true);
ChartPanel cp = new ChartPanel(jfc);
jPanel2.add("Center", cp);
}

I am trying to draw XY Data based on long timestamps as in System.currentTimeMillis() The Series should hold a Pair every 5 Minutes.

I am getting:

com.jrefinery.data.SeriesException: TimeSeries.add(...): inconsistent time period class

Any help is highly appreciated

[David Gilbert]

You've defined your series to use the Millisecond class, then tried to add a FixedMillisecond.

The difference between these two is related to time zones. FixedMillisecond is like java.util.Date, it represents one moment in time, irrespective of the time zone. Once you specify a time zone, you can convert it to a date and time. I would have used java.util.Date, but I need to subclass TimePeriod.

Millisecond goes the other way. It represents a particular millisecond (0-999) within a Second (0-59), within a Minute (0-59), within an Hour (0-23), within a Day. The Day "floats", and you have to peg it to a TimeZone before you can translate the start and end of the day (TimePeriod) to a java.util.Date.

Does that make sense?

Regards,

DG.