DW5S/DW5S.App/FindRef/LinearInterpolation.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DW5S.App
{
    public class LinearInterpolation
    {
        public static double CalSigTimeDto(DateTime x, DateTime x0, DateTime x1, double y0, double y1)
        {
            // 线性插值公式: y = y0 + (x - x0) * ((y1 - y0) / (x1 - x0))
            if (x0 == x1)
            {
                return (y0 + y1) / 2;
            }
            double y = y0 + (x - x0).TotalSeconds * ((y1 - y0) / (x1 - x0).TotalSeconds);
            if (y == double.NaN)
            {
                y = 0;
            }
            return Math.Round(y, 3);
        }

    }
}