public CandlePlotSample()
: base()
{
infoText = "";
infoText += "Simple CandlePlot example. Demonstrates - \n";
infoText += " * Setting candle plot datapoints using arrays \n";
plotCanvas.Clear();
//FilledRegion fr = new FilledRegion (new VerticalLine (1.2), new VerticalLine (2.4));
//fr.Brush = Brushes.BlanchedAlmond;
//plotCanvas.Add (fr);
// note that arrays can be of any type you like.
int[] opens = {1, 2, 1, 2, 1, 3};
double[] closes = {2, 2, 2, 1, 2, 1};
float[] lows = {0, 1, 1, 1, 0, 0};
System.Int64[] highs = {3, 2, 3, 3, 3, 4};
int[] times = {0, 1, 2, 3, 4, 5};
CandlePlot cp = new CandlePlot ();
cp.CloseData = closes;
cp.OpenData = opens;
cp.LowData = lows;
cp.HighData = highs;
cp.AbscissaData = times;
plotCanvas.Add (cp);
HorizontalLine line = new HorizontalLine (1.2);
line.LengthScale = 0.89;
plotCanvas.Add (line, -10);
//VerticalLine line2 = new VerticalLine ( 1.2 );
//line2.LengthScale = 0.89;
//plotCanvas.Add (line2);
plotCanvas.Title = "Line in the Title Number 1\nFollowed by another title line\n and another";
plotCanvas.Redraw ();
plotCanvas.Legend = new Legend( );
plotCanvas.LegendZOrder = 1; // default zorder for adding idrawables is 0, so this puts legend on top.
PackStart (plotCanvas.Canvas, true);
Label la = new Label (infoText);
PackStart (la);
}
public TradingSample()
: base()
{
infoText = "";
infoText += "Stock Dataset Sample. Demonstrates - \n";
infoText += " * CandlePlot, FilledRegion, LinePlot and ArrowItem IDrawables \n";
infoText += " * DateTime axes \n";
infoText += " * Horizontal Drag Interaction - try dragging the plot surface \n";
infoText += " * Axis Drag Interaction - try dragging in the horizontal and vertical Axis areas";
plotCanvas.Clear ();
// [NOTIMP] plotCanvas.DateTimeToolTip = true;
// obtain stock information from xml file
DataSet ds = new DataSet();
System.IO.Stream file =
Assembly.GetExecutingAssembly ().GetManifestResourceStream ("Samples.Resources.asx_jbh.xml");
ds.ReadXml (file, System.Data.XmlReadMode.ReadSchema);
DataTable dt = ds.Tables[0];
// DataView dv = new DataView( dt );
// create CandlePlot.
CandlePlot cp = new CandlePlot ();
cp.DataSource = dt;
cp.AbscissaData = "Date";
cp.OpenData = "Open";
cp.LowData = "Low";
cp.HighData = "High";
cp.CloseData = "Close";
cp.BearishColor = Colors.Red;
cp.BullishColor = Colors.Green;
cp.Style = CandlePlot.Styles.Filled;
// calculate 10 day moving average and 2*sd line
ArrayList av10 = new ArrayList();
ArrayList sd2_10 = new ArrayList();
ArrayList sd_2_10 = new ArrayList();
ArrayList dates = new ArrayList();
for (int i=0; i<dt.Rows.Count-10; ++i) {
float sum = 0.0f;
for (int j=0; j<10; ++j) {
sum += (float)dt.Rows[i+j]["Close"];
}
float average = sum / 10.0f;
av10.Add (average);
sum = 0.0f;
for (int j=0; j<10; ++j) {
sum += ((float)dt.Rows[i+j]["Close"]-average)*((float)dt.Rows[i+j]["Close"]-average);
}
sum /= 10.0f;
sum = 2.0f * (float)Math.Sqrt (sum);
sd2_10.Add (average + sum);
sd_2_10.Add (average - sum);
dates.Add ((DateTime)dt.Rows[i+10]["Date"]);
}
// and a line plot of close values.
LinePlot av = new LinePlot ();
av.OrdinateData = av10;
av.AbscissaData = dates;
av.LineColor = Colors.DarkGray;
av.LineWidth = 2.0;
LinePlot top = new LinePlot ();
top.OrdinateData = sd2_10;
top.AbscissaData = dates;
top.LineColor = Colors.LightBlue;
top.LineWidth = 2.0;
LinePlot bottom = new LinePlot ();
bottom.OrdinateData = sd_2_10;
bottom.AbscissaData = dates;
bottom.LineColor = Colors.LightBlue;
bottom.LineWidth = 2.0;
FilledRegion fr = new FilledRegion (top, bottom);
fr.FillColor = Colors.LightGreen;
// Note: order of adding FilledRegion, Plots, etc is important for visibility
plotCanvas.Add (fr);
plotCanvas.Add (new Grid());
plotCanvas.Add (av);
plotCanvas.Add (top);
plotCanvas.Add (bottom);
plotCanvas.Add (cp);
// now make an arrow...
ArrowItem arrow = new ArrowItem (new Point (((DateTime)dt.Rows[60]["Date"]).Ticks, 2.28), -80, "An interesting flat bit");
arrow.ArrowColor = Colors.DarkBlue;
arrow.PhysicalLength = 50;
plotCanvas.Add (arrow);
plotCanvas.Title = "Stock Prices";
plotCanvas.XAxis1.Label = "Date / Time";
plotCanvas.XAxis1.WorldMin += plotCanvas.XAxis1.WorldLength / 4.0;
plotCanvas.XAxis1.WorldMax -= plotCanvas.XAxis1.WorldLength / 2.0;
plotCanvas.YAxis1.Label = "Price [$]";
plotCanvas.XAxis1 = new TradingDateTimeAxis (plotCanvas.XAxis1);
plotCanvas.PlotBackColor = Colors.White;
plotCanvas.XAxis1.LineColor = Colors.Black;
plotCanvas.YAxis1.LineColor = Colors.Black;
PackStart (plotCanvas.Canvas, true);
Label la = new Label (infoText);
PackStart (la);
}
