private void UpdatePlotHumid(double t, double d)
{
LineSeries lineSeries = Humid.Series[0] as LineSeries;
lineSeries.Points.Add(new DataPoint(t, d));
if (lineSeries.Points.Count > config.MaxSampleNumber)
{
lineSeries.Points.RemoveAt(0);
}
if (t >= config.XAxisMax)
{
Humid.Axes[0].Minimum = (t - config.XAxisMax);
Humid.Axes[0].Maximum = t + config.SampleTime / 1000.0;;
}
Humid.InvalidatePlot(true);
}