delphi中tchart动态显示多条曲线源码
时间: 2023-07-29 15:04:19 浏览: 158
在Delphi中使用TChart动态显示多条曲线的源码可以如下所示:
```delphi
unit Unit1;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, VCLTee.Series, Vcl.ExtCtrls, VCLTee.TeEngine,
VCLTee.TeeProcs, VCLTee.Chart;
type
TForm1 = class(TForm)
Chart1: TChart;
Timer1: TTimer;
procedure FormCreate(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
private
{ Private declarations }
procedure AddRandomData(Series: TLineSeries);
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
var
Series1, Series2: TLineSeries;
begin
// 创建两条曲线
Series1 := TLineSeries.Create(Chart1);
Series2 := TLineSeries.Create(Chart1);
// 设置曲线的标题和样式
Series1.Title := '曲线1';
Series2.Title := '曲线2';
Series1.Pointer.Visible := True;
Series2.Pointer.Visible := True;
// 将曲线添加到图表中
Chart1.AddSeries(Series1);
Chart1.AddSeries(Series2);
// 设置图表的标题和坐标轴名称
Chart1.Title.Text.Text := '动态显示多条曲线';
Chart1.BottomAxis.Title.Caption := 'X轴';
Chart1.LeftAxis.Title.Caption := 'Y轴';
// 启动定时器,定时刷新曲线数据
Timer1.Enabled := True;
end;
procedure TForm1.Timer1Timer(Sender: TObject);
begin
// 每个定时周期更新曲线的数据
AddRandomData(TLineSeries(Chart1.Series[0]));
AddRandomData(TLineSeries(Chart1.Series[1]));
end;
procedure TForm1.AddRandomData(Series: TLineSeries);
begin
// 随机生成曲线的数据点
Series.Add(Random(100), Random(100));
// 更新图表显示
Chart1.AutoRepaint := True;
end;
end.
```
这是一个简单的示例,其中通过TLineSeries来显示两条曲线,并使用定时器Timer1来动态更新曲线的数据。在定时器的事件中,调用AddRandomData方法生成随机的曲线数据点,并通过Chart1.AutoRepaint := True来实时刷新图表显示。
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