转载自：https://blog.csdn.net/qq_23176133/article/details/86766162?utm_medium=distribute.pc_relevant.none-task-blog-baidujs-5
前面介绍了Live Charts的基础和设置，接下将介绍如何绘制动态的折线图，实时更新数据的折线图。
效果预览
前台代码
<Grid x:Name="mygrid">
<lvc:CartesianChart Series="{Binding SeriesCollection}" LegendLocation="Left">
<lvc:CartesianChart.AxisX>
<lvc:Axis Title="Time" Labels="{Binding Labels}" FontSize="14"></lvc:Axis>
</lvc:CartesianChart.AxisX>
<lvc:CartesianChart.AxisY>
<lvc:Axis MaxValue="10" MinValue="-10" MinRange="-10" MaxRange="10"/>
</lvc:CartesianChart.AxisY>
</lvc:CartesianChart>
</Grid>
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后台代码
public partial class MainWindow : Window
{
public SeriesCollection SeriesCollection { get; set; }
public List <string> Labels { get; set; }
private double _trend;
private double[] temp = { 1, 3, 2, 4,-3,5,2,1 };
public MainWindow()
{
InitializeComponent();
//实例化一条折线图
LineSeries mylineseries = new LineSeries();
//设置折线的标题
mylineseries.Title = "Temp";
//折线图直线形式
mylineseries.LineSmoothness = 0;
//折线图的无点样式
mylineseries.PointGeometry = null;
//添加横坐标
Labels =new List<string>{ "1", "3", "2", "4", "-3", "5", "2", "1" };
//添加折线图的数据
mylineseries.Values = new ChartValues<double>(temp);
SeriesCollection = new SeriesCollection { };
SeriesCollection.Add(mylineseries);
_trend = 8;
linestart();
DataContext = this;
}
//连续折线图的方法
public void linestart()
{
Task.Run(() =>
{
var r = new Random();
while (true)
{
Thread.Sleep(1000);
_trend = r.Next(-10, 10);
//通过Dispatcher在工作线程中更新窗体的UI元素
Application.Current.Dispatcher.Invoke(() =>
{
//更新横坐标时间
Labels.Add(DateTime.Now.ToString());
Labels.RemoveAt(0);
//更新纵坐标数据
SeriesCollection[0].Values.Add(_trend);
SeriesCollection[0].Values.RemoveAt(0);
});
}
});
}
}
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</div><div><div></div></div>
<link href="https://csdnimg.cn/release/phoenix/mdeditor/markdown_views-60ecaf1f42.css" rel="stylesheet">
</div>
前面介绍了Live Charts的基础和设置，接下将介绍如何绘制动态的折线图，实时更新数据的折线图。
效果预览
前台代码
<Grid x:Name="mygrid">
<lvc:CartesianChart Series="{Binding SeriesCollection}" LegendLocation="Left">
<lvc:CartesianChart.AxisX>
<lvc:Axis Title="Time" Labels="{Binding Labels}" FontSize="14"></lvc:Axis>
</lvc:CartesianChart.AxisX>
<lvc:CartesianChart.AxisY>
<lvc:Axis MaxValue="10" MinValue="-10" MinRange="-10" MaxRange="10"/>
</lvc:CartesianChart.AxisY>
</lvc:CartesianChart>
</Grid>
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后台代码
public partial class MainWindow : Window
{
public SeriesCollection SeriesCollection { get; set; }
public List <string> Labels { get; set; }
private double _trend;
private double[] temp = { 1, 3, 2, 4,-3,5,2,1 };
public MainWindow()
{
InitializeComponent();
//实例化一条折线图
LineSeries mylineseries = new LineSeries();
//设置折线的标题
mylineseries.Title = "Temp";
//折线图直线形式
mylineseries.LineSmoothness = 0;
//折线图的无点样式
mylineseries.PointGeometry = null;
//添加横坐标
Labels =new List<string>{ "1", "3", "2", "4", "-3", "5", "2", "1" };
//添加折线图的数据
mylineseries.Values = new ChartValues<double>(temp);
SeriesCollection = new SeriesCollection { };
SeriesCollection.Add(mylineseries);
_trend = 8;
linestart();
DataContext = this;
}
//连续折线图的方法
public void linestart()
{
Task.Run(() =>
{
var r = new Random();
while (true)
{
Thread.Sleep(1000);
_trend = r.Next(-10, 10);
//通过Dispatcher在工作线程中更新窗体的UI元素
Application.Current.Dispatcher.Invoke(() =>
{
//更新横坐标时间
Labels.Add(DateTime.Now.ToString());
Labels.RemoveAt(0);
//更新纵坐标数据
SeriesCollection[0].Values.Add(_trend);
SeriesCollection[0].Values.RemoveAt(0);
});
}
});
}
}
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</div><div><div></div></div>
<link href="https://csdnimg.cn/release/phoenix/mdeditor/markdown_views-60ecaf1f42.css" rel="stylesheet">
</div>