次要滴答TeeChart delphi对数刻度

关于次要蜱,我有一个非常具体的要求.根据不同的几十年,我的客户想要一个具有不同数量的次要刻度的图表.例如,如果十年小于1,他想要10个标签(1,2,3,4,5,6,7,8,9,10)和下面的小标记(1.5,2.5,3.5,4.5,5.5) ,6.5,7.5,8.5,9.5)

如果十年是1到2,他想要以下标签(1,2,3,4,5,6,8,10)和以下小标记(1.5,2.5,3.5,4.5,5.5,7,9)

任何帮助非常感谢.我找不到如何覆盖刻度线,所以我可以将它们放在自定义点.我已经想出了自定义标签.

谢谢

这里回答你 here.我在这里发布了最后一个更复杂的例子中的代码,其中自定义标签用于绘制不规则标签,并创建DrawMinorTick函数以手动绘制不规则的自定义次要刻度.

uses Series, TeCanvas;

procedure TForm1.FormCreate(Sender: TObject);
var i: Integer;
begin
  Chart1.View3D:=false;
  Chart1.Legend.Visible:=false;

  Chart1.AddSeries(TFastLineSeries).FillSampleValues(10);
  for i:=0 to Chart1[0].Count-1 do
    Chart1[0].XValue[i]:=i+1;

  Chart1.Axes.Bottom.Items.Clear;
  for i:=1 to 4 do
    Chart1.Axes.Bottom.Items.Add(i, IntToStr(i));

  Chart1.Axes.Bottom.Items.Add(7, '7');
  Chart1.Axes.Bottom.Items.Add(10, '10');

  Chart1.Axes.Bottom.MinorTickCount:=0;
end;

procedure TForm1.Chart1AfterDraw(Sender: TObject);
begin
  DrawMinorTick(Chart1.Axes.Bottom, 1.5);
  DrawMinorTick(Chart1.Axes.Bottom, 2.5);
  DrawMinorTick(Chart1.Axes.Bottom, 5);
  DrawMinorTick(Chart1.Axes.Bottom, 6);
  DrawMinorTick(Chart1.Axes.Bottom, 8);
  DrawMinorTick(Chart1.Axes.Bottom, 9);
end;

procedure TForm1.DrawMinorTick(axis: TChartAxis; value: double);
var XPos, YPos: Integer;
begin
  Chart1.Canvas.Pen.Color:=axis.MinorTicks.Color;
  Chart1.Canvas.Pen.Width:=axis.MinorTicks.Width;
  Chart1.Canvas.Pen.Style:=axis.MinorTicks.Style;
  if axis.Horizontal then
  begin
    XPos:=axis.CalcPosValue(value);
    YPos:=axis.PosAxis+1;
    Chart1.Canvas.Line(XPos, YPos, XPos, YPos+axis.MinorTickLength);
  end
  else
  begin
    XPos:=axis.PosAxis;
    YPos:=axis.CalcPosValue(value);
    Chart1.Canvas.Line(XPos, YPos, XPos-axis.MinorTickLength, YPos);
  end;
end;