Steema Software - Customer Support Forums
http://teechart.com/support/
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public Form1()
{
InitializeComponent();
InitializeChart();
}
private Steema.TeeChart.Styles.Line line1,line2;
private Steema.TeeChart.Functions.Smoothing smoothing1;
private Steema.TeeChart.Tools.SeriesBandTool BandTool;
private void InitializeChart()
{
tChart1.Aspect.View3D = false;
line1 = new Line(tChart1.Chart);
line2 = new Line(tChart1.Chart);
smoothing1 = new Smoothing();
line1.Add(new int[] { 4, 9, 5, 7, 2, 12, 15 });
line1.Color = Color.YellowGreen;
line2.DataSource = line1;
line2.Function = smoothing1;
line2.Color = Color.BlueViolet;
//Smoothing
smoothing1.Factor = 4;
smoothing1.Period = 1;
smoothing1.Interpolate = true;
//ColorBand
BandTool = new SeriesBandTool(tChart1.Chart);
BandTool.Series = line2;
BandTool.Series2 = line1;
BandTool.Brush.Color = Color.Green;
BandTool.Brush.Transparency = 50;
}Code: Select all
srgn.Brush.Style = System.Drawing.Drawing2D.HatchStyle.VerticalCode: Select all
Private Sub DisplayBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DisplayBtn.Click
Try
'Dim sBandTool As New Steema.TeeChart.Tools.SeriesBandTool
'sBandTool.Series = FastLine1
'GraphChart.Tools.Add(sBandTool)
GraphChart.Aspect.View3D = False
GraphChart.Header.Text = "Graph"
GraphChart.Zoom.Direction = Steema.TeeChart.ZoomDirections.Horizontal
' FastLine1.Clear()
'FastLine1.DrawAllPoints = False
''FastLine1.DrawAllPointsStyle = Steema.TeeChart.Styles.DrawAllPointsStyle.MinMax
'FastLine1.TreatNulls = Steema.TeeChart.Styles.TreatNullsStyle.DoNotPaint
'FastLine1.LinePen.Width = 1
'FastLine1.LinePen.Style = Drawing2D.DashStyle.Solid
GraphChart.Series.RemoveAllSeries()
Dim Area1 As New Steema.TeeChart.Styles.Area
GraphChart.Series.Add(Area1)
Area1.TreatNulls = Steema.TeeChart.Styles.TreatNullsStyle.DoNotPaint
Area1.Color = Color.Transparent
Area1.UseOrigin = True
Area1.Origin = 0
Dim txtReader As New System.IO.StreamReader("..\..\input.txt")
Dim tmpStr As String()
While Not txtReader.EndOfStream
tmpStr = Split(txtReader.ReadLine, ",")
Area1.Add(CDbl(tmpStr(0)), CDbl(tmpStr(1)))
End While
txtReader.Close()
'add a series region tool
Dim srgn As New Steema.TeeChart.Tools.SeriesRegionTool
srgn.Series = Area1 'FastLine1
srgn.Active = True
srgn.UseOrigin = True
srgn.Brush.Style = System.Drawing.Drawing2D.HatchStyle.Vertical
'set brush transparency
srgn.Brush.Transparency = 100
'disabling pen
srgn.Pen.Visible = False
'set Foreground color
srgn.Brush.ForegroundColor = FastLine1.Color
'GraphChart.Tools.Add(srgn)
Catch ex As Exception
End Try
End SubIn that case the only solution I can think is that you create your custom series inheriting from FastLine series and overriding relevant drawing methods, eg.: DrawValue method. Please bear in mind that drawing more elements into a FastLine series you'll slow it down. To improve your project's performance I strongly recommend you to read the Real-time Charting article here. If that's not enough for your needs you may also consider using TeeChart.Direct2D.dll. Last but not least, you'll find custom series examples here:Area series is not a feasible solution for us. FastLine series itself is not fast enough for our data volumes and area series is out question.
This is an issue (TF02014468) with FastLine series when DrawAllPoints is set to false and SeriesRegionTool but there's no mention that tool's brush is linked to series data. As you can see in the screen-shots in the thread you pointed at, SeriesRegionTool draws more brush pattern lines there than points are in the series, the same issue discussed in this thread.One related question I have is that the issues posted here long ago shows that the vertical lines are dependent on the series data. How is it so if the brush is not aware of the data source?
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private void tChart1_AfterDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g)
{
if (tChart1[0].Count > 0)
for (int i = tChart1[0].FirstDisplayedIndex(); i <= tChart1[0].LastDisplayedIndex(); i++)
{
g.Line(tChart1[0].CalcXPosValue(tChart1[0].XValues[i]), tChart1[0].CalcYPosValue(tChart1[0].YValues[i]),
tChart1[0].CalcXPosValue(tChart1[0].XValues[i]), tChart1.Axes.Left.CalcYPosValue(0));
}
}