OxyPlot使用教程

库的下载

项目的引用右键，选择“管理NuGet程序包”，搜索OxyPlot，安装OxyPlot.WindowsForms

或者直接引用OxyPlot.dll，和OxyPlot.WIndowsForms.dll文件，在此处下载。

 

HelloWorld

首先在Form上创建一个PlotView控件，暂时无法直接拖入。

可以在InitializeComponent下调用InitPlot();

        private void InitPlot()
        {
            this.plot1 = new OxyPlot.WindowsForms.PlotView();
            this.SuspendLayout();
            this.plot1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.plot1.Location = new System.Drawing.Point(0, 0);
            this.plot1.Name = "plot1";
            this.plot1.TabIndex = 0;
            this.plot1.Margin = new System.Windows.Forms.Padding(0);
            this.Controls.Add(this.plot1);
            this.ResumeLayout();
        }

注意：如果是在Form的一个Panel下添加PlotView，

可以这样

this.panel1.Controls.Add(this.plot1);

然后创建Model，整体代码如下

        public Form1()
        {
            InitializeComponent();
            InitPlot();
            var myModel = new PlotModel { Title = "Example 1" };
            myModel.Series.Add(new FunctionSeries(Math.Cos, 0, 10, 0.1, "cos(x)"));
            this.plot1.Model = myModel;
        }

 

 

 

改变背景色，添加曲线

            var myModel = new PlotModel { Title = "Example 1" ,Background=OxyColors.White};
            myModel.Series.Add(new FunctionSeries(Math.Cos, 0, 10, 0.1, "cos(x)"));
            myModel.Series.Add(new FunctionSeries(Math.Sin, -10, 10, 0.1, "sin(x)"));
            myModel.Series.Add(new FunctionSeries(t => 5 * Math.Cos(t), t => 5 * Math.Sin(t), 0, 2 * Math.PI, 0.1, "cos(t),sin(t)"));
            this.plot1.Model = myModel;

 

 

 一个实时更新曲线的例子

来源https://blog.csdn.net/weixin_42930928/article/details/81706540

    public partial class Form1 : Form
    {
        private PlotView plot1;
        public Form1()
        {
            InitializeComponent();
            InitPlot();
            
        }
        private void InitPlot()
        {
            this.plot1 = new OxyPlot.WindowsForms.PlotView();
            this.SuspendLayout();
            this.plot1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.plot1.Location = new System.Drawing.Point(0, 0);
            this.plot1.Name = "plot1";
            this.plot1.TabIndex = 0;
            this.plot1.Margin = new System.Windows.Forms.Padding(0);
            this.panel1.Controls.Add(this.plot1);
            this.ResumeLayout();
        }
        private PlotModel _myPlotModel;
        private DateTimeAxis _dateAxis;
        private LinearAxis _valueAxis;

        private Random rand = new Random();
        private void Form1_Load(object sender, EventArgs e)
        {
            _myPlotModel = new PlotModel()
            {
                Title = "Temp & Humi",
                LegendTitle = "Legend",
                LegendOrientation = LegendOrientation.Horizontal,
                LegendPlacement = LegendPlacement.Inside,
                LegendPosition = LegendPosition.TopRight,
                LegendBackground = OxyColor.FromAColor(200, OxyColors.Beige),
                LegendBorder = OxyColors.Black
            };
            //X轴
            _dateAxis = new DateTimeAxis()
            {
                MajorGridlineStyle = LineStyle.Solid,
                MinorGridlineStyle = LineStyle.Dot,
                IntervalLength = 80,
                //IsZoomEnabled = false,
                //IsPanEnabled = false
            };
            _myPlotModel.Axes.Add(_dateAxis);

            //Y轴
            _valueAxis = new LinearAxis()
            {
                MajorGridlineStyle = LineStyle.Solid,
                MinorGridlineStyle = LineStyle.Dot,
                IntervalLength = 80,
                Angle = 60,
                IsZoomEnabled = false,
                IsPanEnabled = false,
                Maximum = 100,
                Minimum = -1
            };
            _myPlotModel.Axes.Add(_valueAxis);

            //添加标注线，温度上下限和湿度上下限
            var lineTempMaxAnnotation = new OxyPlot.Annotations.LineAnnotation()
            {
                Type = LineAnnotationType.Horizontal,
                Color = OxyColors.Red,
                LineStyle = LineStyle.Solid,
                Y = 10,
                Text = "Temp MAX:10"
            };
            _myPlotModel.Annotations.Add(lineTempMaxAnnotation);

            var lineTempMinAnnotation = new LineAnnotation()
            {
                Type = LineAnnotationType.Horizontal,
                Y = 30,
                Text = "Temp Min:30",
                Color = OxyColors.Red,
                LineStyle = LineStyle.Solid
            };
            _myPlotModel.Annotations.Add(lineTempMinAnnotation);

            var lineHumiMaxAnnotation = new OxyPlot.Annotations.LineAnnotation()
            {
                Type = LineAnnotationType.Horizontal,
                Color = OxyColors.Red,
                LineStyle = LineStyle.Solid,
                //lineMaxAnnotation.MaximumX = 0.8;
                Y = 75,
                Text = "Humi MAX:75"
            };
            _myPlotModel.Annotations.Add(lineHumiMaxAnnotation);

            var lineHumiMinAnnotation = new LineAnnotation()
            {
                Type = LineAnnotationType.Horizontal,
                Y = 35,
                Text = "Humi Min:35",
                Color = OxyColors.Red,
                LineStyle = LineStyle.Solid
            };
            _myPlotModel.Annotations.Add(lineHumiMinAnnotation);

            //添加两条曲线
            var series = new LineSeries()
            {
                Color = OxyColors.Green,
                StrokeThickness = 2,
                MarkerSize = 3,
                MarkerStroke = OxyColors.DarkGreen,
                MarkerType = MarkerType.Diamond,
                Title = "Temp",
            };
            _myPlotModel.Series.Add(series);
            series = new LineSeries()
            {
                Color = OxyColors.Blue,
                StrokeThickness = 2,
                MarkerSize = 3,
                MarkerStroke = OxyColors.BlueViolet,
                MarkerType = MarkerType.Star,
                Title = "Humi",
            };
            _myPlotModel.Series.Add(series);


            plot1.Model = _myPlotModel;

            Task.Factory.StartNew(() =>
            {
                while (true)
                {

                    var date = DateTime.Now;
                    _myPlotModel.Axes[0].Maximum = DateTimeAxis.ToDouble(date.AddSeconds(1));

                    var lineSer = plot1.Model.Series[0] as LineSeries;
                    lineSer.Points.Add(new DataPoint(DateTimeAxis.ToDouble(date), rand.Next(100, 300) / 10.0));
                    if (lineSer.Points.Count > 100)
                    {
                        lineSer.Points.RemoveAt(0);
                    }

                    lineSer = plot1.Model.Series[1] as LineSeries;
                    lineSer.Points.Add(new DataPoint(DateTimeAxis.ToDouble(date), rand.Next(350, 750) / 10.0));
                    if (lineSer.Points.Count > 100)
                    {
                        lineSer.Points.RemoveAt(0);
                    }

                    _myPlotModel.InvalidatePlot(true);

                    Thread.Sleep(1000);
                }
            });


        }
    }

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