private static void AdjustYExtent(CandleStickAndVolumeSeries series, OxyPlot.Axes.DateTimeAxis xaxis, OxyPlot.Axes.LogarithmicAxis yaxis)
{
var xmin = xaxis.ActualMinimum;
var xmax = xaxis.ActualMaximum;
var istart = series.FindByX(xmin);
var iend = series.FindByX(xmax);
var ymin = double.MaxValue;
var ymax = double.MinValue;
for (int i = istart; i < iend + 1; i++)
{
var bar = series.Items[i];
ymin = Math.Min(ymin, bar.Low);
ymax = Math.Max(ymax, bar.High);
}
yaxis.Zoom(ymin * (0.999), ymax * 1.001);
}
public Example GenerateGraph(Stock Stck, Stock.Interval Period)
{
int length = 0;
double startPost = 0;
double endPOs = 0;
List <TradingPeriod> TradingList = new List <TradingPeriod>();
switch (Period)
{
case Stock.Interval.Hour:
length = Stck.HourlyHist.Count;
TradingList = Stck.HourlyHist;
startPost = length + 6;
endPOs = length - 50;
break;
case Stock.Interval.Day:
length = Stck.DailyHist.Count;
TradingList = Stck.DailyHist;
startPost = length + 6;
endPOs = length - 110;
break;
case Stock.Interval.Week:
length = Stck.WeeklyHist.Count;
TradingList = Stck.WeeklyHist;
startPost = length + 6;
endPOs = length - 80;
break;
case Stock.Interval.Month:
length = Stck.MonthlyHist.Count;
TradingList = Stck.MonthlyHist;
startPost = length + 3;
endPOs = length - 48;
break;
}
VolumeStyle style = VolumeStyle.Combined;
bool naturalY = false;
bool naturalV = false;
var pm = new PlotModel {
};
var series = new CandleStickAndVolumeSeries
{
PositiveColor = OxyColors.DarkGreen,
NegativeColor = OxyColors.Red,
PositiveHollow = false,
NegativeHollow = false,
SeparatorColor = OxyColors.Gray,
SeparatorLineStyle = LineStyle.Dash,
VolumeStyle = VolumeStyle.Combined
};
// create bars
foreach (var v in TradingList)
{
OhlcvItem Temp = new OhlcvItem();
Temp.BuyVolume = (v.Volume);
Temp.Close = v.Close;
Temp.High = v.High;
Temp.Low = v.Low;
Temp.Open = v.Open;
Temp.X = v.Index;
series.Append(Temp);
}
// create visible window
var Istart = length - 10;
var Iend = length - 1;
var Ymin = series.Items.Skip((int)endPOs).Take((int)startPost - (int)endPOs + 1).Select(x => x.Low).Min();
var Ymax = series.Items.Skip((int)endPOs).Take((int)startPost - (int)endPOs + 1).Select(x => x.High).Max();
// setup axes
var timeAxis = new OxyPlot.Axes.DateTimeAxis
{
Position = AxisPosition.Bottom,
Minimum = endPOs,
Maximum = startPost,
//StartPosition = Xmax - TimeSpan.FromDays(180).Ticks,
//EndPosition = Xmax,
};
var barAxis = new OxyPlot.Axes.LogarithmicAxis()
{
Position = AxisPosition.Left,
Key = series.BarAxisKey,
StartPosition = 0.15,
EndPosition = 1.0,
Minimum = naturalY ? double.NaN : Ymin,
Maximum = naturalY ? double.NaN : Ymax,
};
var volAxis = new OxyPlot.Axes.LinearAxis()
{
Position = AxisPosition.Left,
Key = series.VolumeAxisKey,
StartPosition = 0.0,
EndPosition = 0.15,
Minimum = naturalV ? double.NaN : 0,
Maximum = naturalV ? double.NaN : TradingList.Max(x => x.Volume)
};
switch (style)
{
case VolumeStyle.None:
barAxis.Key = null;
barAxis.StartPosition = 0.0;
pm.Axes.Add(timeAxis);
pm.Axes.Add(barAxis);
break;
case VolumeStyle.Combined:
case VolumeStyle.Stacked:
pm.Axes.Add(timeAxis);
pm.Axes.Add(barAxis);
pm.Axes.Add(volAxis);
break;
case VolumeStyle.PositiveNegative:
volAxis.Minimum = naturalV ? double.NaN : -5000;
pm.Axes.Add(timeAxis);
pm.Axes.Add(barAxis);
pm.Axes.Add(volAxis);
break;
}
pm.Series.Add(series);
if (naturalY == false)
{
timeAxis.AxisChanged += (sender, e) => AdjustYExtent(series, timeAxis, barAxis);
//timeAxis.AxisChanged += (sender, e) => AdjustYExtent(series, timeAxis, volAxis);
}
///Adding Pivot Annotation
///
Stck.GetPivots(Period);
var ResistanceLines = new List <OxyPlot.Annotations.LineAnnotation>();
var FirstOrderPivots = new List <OxyPlot.Annotations.PointAnnotation>();
var SecondOrderPivots = new List <OxyPlot.Annotations.PointAnnotation>();
var ThirdOrderPivots = new List <OxyPlot.Annotations.PointAnnotation>();
foreach (var f in TradingList)
{
if (f.IsPivotHigh[0])
{
FirstOrderPivots.Add(new OxyPlot.Annotations.PointAnnotation()
{
Fill = OxyColors.LawnGreen, X = f.Index, Y = f.High
});
}
if (f.IsPivotHigh[1])
{
SecondOrderPivots.Add(new OxyPlot.Annotations.PointAnnotation()
{
Fill = OxyColors.Green, X = f.Index, Y = f.High
});
}
if (f.IsPivotHigh[2])
{
ThirdOrderPivots.Add(new OxyPlot.Annotations.PointAnnotation()
{
Fill = OxyColors.DarkGreen, X = f.Index, Y = f.High
});
}
if (f.IsPivotLow[0])
{
FirstOrderPivots.Add(new OxyPlot.Annotations.PointAnnotation()
{
Fill = OxyColors.Pink, X = f.Index, Y = f.Low
});
}
if (f.IsPivotLow[1])
{
SecondOrderPivots.Add(new OxyPlot.Annotations.PointAnnotation()
{
Fill = OxyColors.Red, X = f.Index, Y = f.Low
});
}
if (f.IsPivotLow[2])
{
ThirdOrderPivots.Add(new OxyPlot.Annotations.PointAnnotation()
{
Fill = OxyColors.DarkRed, X = f.Index, Y = f.Low
});
}
}
ResistanceLines = MarketStructure.DefineSupportResistanceZonesPivots(Stck, Period);
GraphOverlays FOP = new GraphOverlays();
GraphOverlays SOP = new GraphOverlays();
GraphOverlays TOP = new GraphOverlays();
GraphOverlays Lines = new GraphOverlays();
FOP.Name = "First Order Pivot";
SOP.Name = "Second Order Pivot";
TOP.Name = "Third Order Pivot";
Lines.Name = "Resistance Lines";
FOP.Overlay = FirstOrderPivots;
SOP.Overlay = SecondOrderPivots;
TOP.Overlay = ThirdOrderPivots;
Lines.Overlay = ResistanceLines;
FOP.Period = Period;
SOP.Period = Period;
TOP.Period = Period;
Lines.Period = Period;
CurrentOverlays.Add(FOP);
CurrentOverlays.Add(SOP);
CurrentOverlays.Add(TOP);
CurrentOverlays.Add(Lines);
///Adding line annotation...
var la = new OxyPlot.Annotations.LineAnnotation {
Type = LineAnnotationType.Horizontal, Y = TradingList.Last().Close
};
la.MouseDown += (s, e) =>
{
if (e.ChangedButton != OxyMouseButton.Left)
{
return;
}
la.StrokeThickness *= 5;
pm.InvalidatePlot(false);
e.Handled = true;
};
// Handle mouse movements (note: this is only called when the mousedown event was handled)
la.MouseMove += (s, e) =>
{
la.Y = la.InverseTransform(e.Position).Y;
la.Text = string.Format("{0:0.###}", la.Y);
pm.InvalidatePlot(false);
e.Handled = true;
};
la.MouseUp += (s, e) =>
{
la.StrokeThickness /= 5;
pm.InvalidatePlot(false);
e.Handled = true;
};
pm.Annotations.Add(la);
OxyPlot.Annotations.ArrowAnnotation tmp = null;
pm.MouseDown += (s, e) =>
{
if (e.ChangedButton == OxyMouseButton.Left)
{
// Create a new arrow annotation
tmp = new OxyPlot.Annotations.ArrowAnnotation();
tmp.HeadLength = 0;
tmp.StartPoint = tmp.EndPoint = timeAxis.InverseTransform(e.Position.X, e.Position.Y, barAxis);
pm.Annotations.Add(tmp);
e.Handled = true;
}
if (e.ChangedButton == OxyMouseButton.Middle)
{
//delete old arrow annotation
if (e.HitTestResult != null)
{
if (e.HitTestResult.Element.GetType() == typeof(OxyPlot.Annotations.ArrowAnnotation))
{
tmp = (OxyPlot.Annotations.ArrowAnnotation)e.HitTestResult.Element;
pm.Annotations.Remove(tmp);
e.Handled = true;
}
}
}
};
// Handle mouse movements (note: this is only called when the mousedown event was handled)
pm.MouseMove += (s, e) =>
{
if (tmp != null)
{
// Modify the end point
tmp.EndPoint = timeAxis.InverseTransform(e.Position.X, e.Position.Y, barAxis);
tmp.FontWeight = FontWeights.Bold;
tmp.Text = string.Format("{0:0.##}%", ((tmp.StartPoint.Y - tmp.EndPoint.Y) * -100) / tmp.StartPoint.Y);
// Redraw the plot
pm.InvalidatePlot(false);
e.Handled = true;
}
};
pm.MouseUp += (s, e) =>
{
if (tmp != null)
{
tmp = null;
e.Handled = true;
}
};
pm.Title = Stck.StockName;
var controller = new PlotController();
//controller.UnbindAll();
//controller.BindMouseDown(OxyMouseButton.Middle, PlotCommands);
//controller.BindMouseDown(OxyMouseButton.Left, PlotCommands.PanAt);
//controller.BindMouseDown(OxyMouseButton.Middle, );
return(new Example(pm, controller));
}
