protected void preload_DoWork(object sender, DoWorkEventArgs e)
{
if (_mustStopNow)
{
return;
}
recordedData = _sensor.get_recordedData(0, 0);
try
{
recordedDataLoadProgress = recordedData.loadMore();
}
catch (Exception ex) { LogManager.Log(_hwdName + ": preload more caused an exception " + ex.ToString()); }
globalDataLoadProgress = recordedDataLoadProgress;
((BackgroundWorker)sender).ReportProgress(recordedDataLoadProgress);
List <YMeasure> measures = recordedData.get_preview();
previewCurData = new List <pointXY>();
int startIndex = 0;
for (int i = startIndex; i < measures.Count; i++)
{
double t = measures[i].get_endTimeUTC();
previewCurData.Add(new pointXY()
{
x = t, y = measures[i].get_averageValue()
});
}
}
internal YDataloggerContext(YSensor s, int start, int stop)
{
if (start < 0)
{
start = 0;
}
if (stop < 0)
{
stop = 0;
}
_sensor = s;
_dataset = _sensor.get_recordedData(start, stop);
_progress = _dataset.loadMore();
_preview = _dataset.get_preview();
}
/**
* <summary>
* Returns a condensed version of the measures that can
* retrieved in this <c>YDataSet</c>, as a list of <c>YMeasure</c>
* objects.
* <para>
* Each item includes:
* - the start of a time interval
* - the end of a time interval
* - the minimal value observed during the time interval
* - the average value observed during the time interval
* - the maximal value observed during the time interval
* </para>
* <para>
* This preview is available as soon as <c>loadMore()</c> has
* been called for the first time.
* </para>
* <para>
* </para>
* </summary>
* <returns>
* a table of records, where each record depicts the
* measured values during a time interval
* </returns>
* <para>
* On failure, throws an exception or returns an empty array.
* </para>
*/
public virtual YMeasure[] get_preview()
{
return(_objref.get_preview().ToArray());
}