private void hScrollBar1_ValueChanged(object sender, EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
XDate startx = new XDate(_firstDate.Year, _firstDate.Month, _firstDate.Day, _firstDate.Hour, _firstDate.Minute, _firstDate.Second);
XDate endx = new XDate(startx);
startx.AddMinutes(hScrollBar1.Value*_minutesPage);
endx.AddMinutes((hScrollBar1.Value + 1)*_minutesPage);
for (int i = 0; i < zedGraphControl1.MasterPane.PaneList.Count; i++)
{
zedGraphControl1.MasterPane[i].XAxis.Scale.Min = (double)startx;
zedGraphControl1.MasterPane[i].XAxis.Scale.Max = (double)endx;
}
int pixelunits = (int)Math.Ceiling((double)(hScrollBar1.Width - 130) / hScrollBar1.Maximum);
lbScrollTime.Location = new Point(hScrollBar1.Left + pixelunits* hScrollBar1.Value,lbScrollTime.Location.Y);
lbScrollTime.Text = String.Format("{0}-{1}", startx.DateTime.ToShortTimeString(), endx.DateTime.ToShortTimeString());
if (_isAdaptingPointSize) SetPointSize();
zedGraphControl1.AxisChange();
zedGraphControl1.Refresh();
this.Cursor = Cursors.Default;
}
// Japanese Candlestick
private void CreateGraph_JapaneseCandleStick( ZedGraphControl z1 )
{
GraphPane myPane = z1.GraphPane;
myPane.Title.Text = "Japanese Candlestick Chart Demo";
myPane.XAxis.Title.Text = "Trading Date";
myPane.YAxis.Title.Text = "Share Price, $US";
StockPointList spl = new StockPointList();
Random rand = new Random();
// First day is jan 1st
XDate xDate = new XDate( 2006, 1, 1 );
double open = 50.0;
for ( int i = 0; i < 500; 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() * 5.0;
StockPt pt = new StockPt( x, hi, low, open, close, 100000 );
spl.Add( pt );
open = close;
// Advance one day
xDate.AddMinutes( 1.0 );
// but skip the weekends
if ( XDate.XLDateToDayOfWeek( xDate.XLDate ) == 6 )
xDate.AddMinutes( 2.0 );
}
JapaneseCandleStickItem myCurve = myPane.AddJapaneseCandleStick( "trades", spl );
myCurve.Stick.IsAutoSize = true;
myCurve.Stick.Color = Color.Blue;
// Use DateAsOrdinal to skip weekend gaps
//myPane.XAxis.Type = AxisType.DateAsOrdinal;
myPane.XAxis.Type = AxisType.Date;
//myPane.XAxis.Scale.Min = new XDate( 2006, 1, 1 );
// pretty it up a little
myPane.Chart.Fill = new Fill( Color.White, Color.LightGoldenrodYellow, 45.0f );
myPane.Fill = new Fill( Color.White, Color.FromArgb( 220, 220, 255 ), 45.0f );
// Tell ZedGraph to calculate the axis ranges
z1.AxisChange();
z1.Invalidate();
//z1.PointValueEvent += new ZedGraphControl.PointValueHandler( z1_PointValueEvent );
}
/// <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>
internal override 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;
}
private static StockPointList CreateStockPointList(long valueStepSizeMinutes)
{
StockPointList spl = new StockPointList();
Random rand = new Random();
XDate xDate = new XDate(2013, 1, 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() * 5.0;
StockPt pt = new StockPt(x, hi, low, open, close, 100000);
spl.Add(pt);
open = close;
xDate.AddMinutes(valueStepSizeMinutes);
if (XDate.XLDateToDayOfWeek(xDate.XLDate) == 6)
{
xDate.AddDays(2.0);
}
}
return spl;
}
/// <summary>
/// Determine the value for any minor tic.
/// </summary>
/// <remarks>
/// This method properly accounts for <see cref="IsLog"/>, <see cref="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>
private double CalcMinorTicValue( double baseVal, int iTic )
{
double[] dLogVal = { 0, 0.301029995663981, 0.477121254719662, 0.602059991327962,
0.698970004336019, 0.778151250383644, 0.845098040014257,
0.903089986991944, 0.954242509439325, 1 };
if ( this.IsDate ) // date scale
{
XDate xDate= new XDate( baseVal );
switch ( this.minorUnit )
{
case DateUnit.Year:
default:
xDate.AddYears( (double) iTic * this.minorStep );
break;
case DateUnit.Month:
xDate.AddMonths( (double) iTic * this.minorStep );
break;
case DateUnit.Day:
xDate.AddDays( (double) iTic * this.minorStep );
break;
case DateUnit.Hour:
xDate.AddHours( (double) iTic * this.minorStep );
break;
case DateUnit.Minute:
xDate.AddMinutes( (double) iTic * this.minorStep );
break;
case DateUnit.Second:
xDate.AddSeconds( (double) iTic * this.minorStep );
break;
}
return xDate.XLDate;
}
else if ( this.IsLog ) // log scale
{
return baseVal + Math.Floor( (double) iTic / 9.0 ) + dLogVal[ ( iTic + 9 ) % 9 ];
}
else // regular linear scale
{
return baseVal + (double) this.minorStep * (double) iTic;
}
}
/// <summary>
/// Determine the value for any major tic.
/// </summary>
/// <remarks>
/// This method properly accounts for <see cref="IsLog"/>, <see cref="IsText"/>,
/// and other axis format settings.
/// </remarks>
/// <param name="baseVal">
/// The value of the first major tic (floating point double)
/// </param>
/// <param name="tic">
/// The major tic number (0 = first major tic). For log scales, this is the actual power of 10.
/// </param>
/// <returns>
/// The specified major tic value (floating point double).
/// </returns>
private double CalcMajorTicValue( double baseVal, double tic )
{
if ( this.IsDate ) // date scale
{
XDate xDate = new XDate( baseVal );
switch ( this.majorUnit )
{
case DateUnit.Year:
default:
xDate.AddYears( tic * this.step );
break;
case DateUnit.Month:
xDate.AddMonths( tic * this.step );
break;
case DateUnit.Day:
xDate.AddDays( tic * this.step );
break;
case DateUnit.Hour:
xDate.AddHours( tic * this.step );
break;
case DateUnit.Minute:
xDate.AddMinutes( tic * this.step );
break;
case DateUnit.Second:
xDate.AddSeconds( tic * this.step );
break;
}
return xDate.XLDate;
}
else if ( this.IsLog ) // log scale
{
return baseVal + (double) tic;
}
else // regular linear scale
{
return baseVal + (double) this.step * tic;
}
}
