/// <summary>
/// Determine the value for any minor tic.
/// </summary>
/// <remarks>
/// This method properly accounts for <see cref="Scale.IsLog"/>, <see cref="Scale.IsText"/>,
/// and other axis format settings.
/// </remarks>
/// <param name="baseVal">
/// The value of the first major tic (floating point double). This tic value is the base
/// reference for all tics (including minor ones).
/// </param>
/// <param name="iTic">
/// The major tic number (0 = first major tic). For log scales, this is the actual power of 10.
/// </param>
/// <returns>
/// The specified minor tic value (floating point double).
/// </returns>
override internal double CalcMinorTicValue(double baseVal, int iTic)
{
XDate xDate = new XDate(baseVal);
switch (_minorUnit)
{
case DateUnit.Year:
default:
xDate.AddYears((double)iTic * _minorStep);
break;
case DateUnit.Month:
xDate.AddMonths((double)iTic * _minorStep);
break;
case DateUnit.Day:
xDate.AddDays((double)iTic * _minorStep);
break;
case DateUnit.Hour:
xDate.AddHours((double)iTic * _minorStep);
break;
case DateUnit.Minute:
xDate.AddMinutes((double)iTic * _minorStep);
break;
case DateUnit.Second:
xDate.AddSeconds((double)iTic * _minorStep);
break;
}
return(xDate.XLDate);
}
public JapaneseCandleStickDemo()
: base("Demonstration of the Japanese Candlestick Chart Type",
"Japanese CandleStick Demo", DemoType.Bar)
{
GraphPane myPane = base.GraphPane;
myPane.Title.Text = "UER/USD(欧/日)";
myPane.XAxis.Title.Text = "交易日期";
myPane.YAxis.Title.Text = "价格, $￥";
StockPointList spl = new StockPointList();
Random rand = new Random();
// First day is jan 1st
XDate xDate = new XDate(2002, 12, 1);
double open = 50.0;
for (int i = 0; i < 50; i++)
{
double x = xDate.XLDate;
double close = open + rand.NextDouble() * 10.0 - 5.0;
double hi = Math.Max(open, close) + rand.NextDouble() * 5.0;
double low = Math.Min(open, close) - rand.NextDouble() * 3.0;
StockPt pt = new StockPt(x, hi, low, open, close, 100);
spl.Add(pt);
open = close;
xDate.AddHours(1);
if (XDate.XLDateToDayOfWeek(xDate.XLDate) == 6)
{
xDate.AddDays(1.0);
}
}
JapaneseCandleStickItem myCurve = myPane.AddJapaneseCandleStick("蜡烛线", spl);
myCurve.Stick.IsAutoSize = true;
myCurve.Stick.Color = Color.Blue;
myPane.XAxis.Type = AxisType.DateAsOrdinal;
myPane.XAxis.Scale.Min = new XDate(2006, 1, 1);
myPane.Chart.Fill = new Fill(Color.Black, Color.LightGoldenrodYellow, 45.0f);
myPane.Fill = new Fill(Color.White, Color.FromArgb(220, 220, 255), 45.0f);
//myPane.Chart.Fill = new Fill(Color.Black);
//myPane.Fill = new Fill(Color.Black);
base.ZedGraphControl.AxisChange();
}
private void button2_Click(object sender, EventArgs e)
{
XDate toDate = DateTime.Now;
XDate fromDate = toDate;
fromDate.AddHours(-5);
IEnumerable <UnitData> q;
dbl.GetDataAtTime(fromDate, toDate, 2, out q);
textBox1.Text = "";
foreach (var i in q)
{
textBox1.AppendText(string.Format("{0} \t{1} \t{2}\r\n", ((XDate)i.Time).DateTime.ToLongTimeString(), i.GetValue(0), i.GetValue(1)));
}
}
/// <summary>
/// 计算某主刻度值
/// </summary>
/// <param name="baseVal"></param>
/// <param name="tic"></param>
/// <returns></returns>
private double CalcMajorTicValue(double baseVal, double tic)
{
XDate xDate = new XDate(baseVal);
switch (_majorUnit)
{
case DateUnit.Year:
default:
xDate.AddYears(tic * _majorStep);
break;
case DateUnit.Month:
xDate.AddMonths(tic * _majorStep);
break;
case DateUnit.Day:
xDate.AddDays(tic * _majorStep);
break;
case DateUnit.Hour:
xDate.AddHours(tic * _majorStep);
break;
case DateUnit.Minute:
xDate.AddMinutes(tic * _majorStep);
break;
case DateUnit.Second:
xDate.AddSeconds(tic * _majorStep);
break;
case DateUnit.Millisecond:
xDate.AddMilliseconds(tic * _majorStep);
break;
}
return(xDate.XLDate);
}
