plotModel = new PlotModel()

            {

                Title = "数据统计",

                LegendTitle = "Max:红色，Min:黄色",

                LegendOrientation = LegendOrientation.Horizontal,

                LegendPlacement = LegendPlacement.Inside,

                LegendPosition = LegendPosition.TopRight,

                LegendBackground = OxyColor.FromAColor(, OxyColors.Beige),

                LegendBorder = OxyColors.Black,

                DefaultFont = "微软雅黑",

            };

            #region X，Y轴

            //X轴

            var _dateAxis = new DateTimeAxis()

            {

                MajorGridlineStyle = LineStyle.Solid,

                MinorGridlineStyle = LineStyle.Dot,

                IntervalLength = ,

                IsZoomEnabled = false,

                IsPanEnabled = false,

                StringFormat = "M/d HH:mm:ss",

                Title = "时间"

            };

            plotModel.Axes.Add(_dateAxis);

            //Y轴

            var _valueAxis = new LinearAxis()

            {

                Title = "数值",

                Maximum = usl + usl / ,

                Minimum = lsl - lsl / ,

                MajorGridlineStyle = LineStyle.Solid,//主刻度设置格网

                MinorGridlineStyle = LineStyle.Dot,//子刻度设置格网样式

                IntervalLength = ,

                Angle = ,

                IsZoomEnabled = true,//坐标轴缩放

                IsPanEnabled = true,//图表缩放功能

                Position = AxisPosition.Left,

            };

            plotModel.Axes.Add(_valueAxis);

            #endregion

            #region 线条

            //动态线条

            var lineSerial = new LineSeries()

            {

                Title = SvidSelected.ParaName,//eqpParam name

                Color = OxyColors.Black,

                Smooth = true,

                MarkerType = MarkerType.Circle,

                StrokeThickness = ,

                MarkerSize = ,

                MarkerStroke = OxyColors.BlueViolet,

            };

            plotModel.Series.Add(lineSerial);

            Task.Factory.StartNew(() =>

               {

                   for (int i = ; i < resData.Count; i++)

                   {

                       lineSerial.Points.Add(DateTimeAxis.CreateDataPoint(resData[i].occurenceTime, resData[i].val));

                       plotModel.InvalidatePlot(true); //每秒刷新一次视图

                       //Thread.Sleep(200);

                   }

                   sw.Stop();

                   TotalDate = "总渲染时间(毫秒):" + sw.ElapsedMilliseconds;//sw.ElapsedTicks / (decimal)Stopwatch.Frequency;

               });

            #endregion

            #region 上限，下限，中线

            //添加标注线

            var lineMaxAnnotation = new LineAnnotation()

            {//上限

                Type = LineAnnotationType.Horizontal,

                Y = usl,

                Text = "上限:" + usl,

                Color = OxyColors.Red,

                LineStyle = LineStyle.DashDashDot,

                StrokeThickness =

            };

            plotModel.Annotations.Add(lineMaxAnnotation);

            var lineMinAnnotation = new LineAnnotation()

            {//下限

                Type = LineAnnotationType.Horizontal,

                Color = OxyColors.Blue,

                LineStyle = LineStyle.Dash,

                StrokeThickness = ,

                Y = lsl,

                Text = "下限:" + lsl

            };

            plotModel.Annotations.Add(lineMinAnnotation);

            var lineMean = new LineAnnotation()

            {//平均

                Type = LineAnnotationType.Horizontal,

                Color = OxyColors.Green,

                LineStyle = LineStyle.LongDash,

                StrokeThickness = ,

                Y = mean,

                Text = "平均:" + mean

            };

            plotModel.Annotations.Add(lineMean);

            #endregion

            #region 最大值，最小值

            var min = new ScatterSeries();

            var maxDataPoint = DateTimeAxis.CreateDataPoint(maxPoint.occurenceTime, maxPoint.val);

            min.Points.Add(new ScatterPoint(maxDataPoint.X, maxDataPoint.Y, ));

            min.MarkerFill = OxyColor.FromAColor(, OxyColors.Red);

            min.MarkerType = MarkerType.Circle;

            plotModel.Series.Add(min);

            var max = new ScatterSeries();

            var minDataPoint = DateTimeAxis.CreateDataPoint(minPoint.occurenceTime, minPoint.val);

            max.Points.Add(new ScatterPoint(minDataPoint.X, minDataPoint.Y, ));

            max.MarkerFill = OxyColor.FromAColor(, OxyColors.Yellow);

            max.MarkerType = MarkerType.Circle;

            plotModel.Series.Add(max);

            #endregion