public static IObservable <(Mat Frame, double Time, double Sin, double NoisySin)> MakeStream(int frequency)
{
var span = 1000 / (double)frequency;
var time = 0.0;
var observable = Observable.Interval(TimeSpan.FromMilliseconds(span), ThreadPoolScheduler.Instance)
.Select(_ =>
{
time += span / 1000;
var sin = Math.Sin(time);
var noisySin = sin + (new Random((int)DateTime.Now.Ticks).NextDouble() - 0.5) / 4;
var frame = CvChart.Update(time, new double[] { sin, noisySin });
return(frame, time, sin, noisySin);
})
.Finally(() => CvChart.SaveAsCsv("..\\..\\..\\Log.csv"))
.Publish();
_disposer = observable.Connect();
return(observable);
}
public static Mat Init()
{
var lines = new string[] { "Sin", "NoisySin" };
return(CvChart.Initialize("time", lines, 9, 2));
}