添加项目文件。

测试Scottplot/SavitzkyGolay.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+namespace 测试Scottplot
+{
+    /***************************
+    * Savitzky Golay filter 
+    * E-Mail: w@sfox.cn
+    ***************************/
+
+
+
+    public class SavitzkyGolay
+    {
+
+        /// <summary>
+        /// 滤波系数
+        /// </summary>
+        public double[] Coefficient { get; private set; }
+        /// <summary>
+        /// 构造梯度滤波器
+        /// </summary>
+        /// <param name="m">半步宽(m>0,m越大,平滑度越大)</param>
+        public SavitzkyGolay(int m = 2)
+        {
+            this.SetCoefficient(m);
+        }
+        /// <summary>
+        /// 设置滤波系数
+        /// </summary>
+        /// <param name="m">半步宽(m>0,m越大,平滑度越大)</param>
+        public void SetCoefficient(int m)
+        {
+            List<double> result = new List<double>();
+            int w = m * 2 + 1;
+            double W2 = Math.Pow(w, 2);
+            double a1 = 15 / (W2 - 4);
+            double a2 = (W2 - 1) / 12;
+            for (int j = -m; j <= m; j++)
+            {
+                result.Add((1 + a1 * (a2 - Math.Pow(j, 2))) / w);
+            }
+            //var ss = result.Select(x1 => x1.ToString()).Aggregate((a, b) => a + " " + b);
+            this.Coefficient = result.ToArray();
+        }
+
+        /// <summary>
+        /// 单点平滑
+        /// </summary>
+        /// <param name="list">平滑参考点(list.Length 必须等于 this.Coefficient.Length)</param>
+        /// <returns></returns>
+        public double Smooth(List<double> list)
+        {
+            double result = 0;
+            for (int i = 0; i < this.Coefficient.Length; i++)
+            {
+                result += this.Coefficient[i] * list[i];
+            }
+            return result;
+        }
+
+        /// <summary>
+        /// 曲线平滑
+        /// </summary>
+        /// <param name="curve">曲线</param>
+        /// <returns></returns>
+        public double[] Smoothes(double[] curve)
+        {
+
+            int length = curve.Length;
+            double[] result = new double[length];//Result cache
+            int k = this.Coefficient.Length / 2;
+            //this.SetCoefficient(w);//Savitzky Golay Filter Coefficient
+            Array.Copy(curve, result, k);//Fill head
+
+            for (int i = k; i < length - k; i++)
+            {
+                List<double> list = new List<double>();//Smooth list
+                for (int j = i - k; j <= i + k; j++)
+                {
+                    list.Add(curve[j]);
+                }
+                result[i] = this.Smooth(list);//Single point smooth
+            }
+
+            Array.Copy(curve, length - k, result, length - k, k);//Fill Tail
+            return result;
+        }
+    }
+
+}