CODE:

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

namespace GnuplotLib
{
    using XY = Tuple;
    using XYZ = Tuple;

    public class Gnuplot
    {
        #region enum
        public enum Position
        {
            left,
            right,
            top,
            bottom,
            outside,
            below,
            unset,
            off
        }
        public enum PlotMode
        {
            Plot,
            Replot
        }
        #endregion

        #region Internal
        private static string gnuplotExeFilePath = "gnuplot";
        private System.Diagnostics.Process GnuConsole
        {
            get;
            set;
        }
        private bool Started = false;
        #endregion

        #region Property
        public bool SetXaxisLogScale = false;
        public bool SetYaxisLogScale = false;
        public string GraphTitle = "";
        public string XaxisLabel = "";
        public string YaxisLabel = "";
        public string ZaxisLabel = "";
        public Position KeyPosition = Position.unset;
        #endregion

        #region Public Method
        public Gnuplot(
            bool redirectStandardInput = true,
            bool createNoWindow = true,
            bool useShellExecute = false
            )
        {
            GnuConsole = new System.Diagnostics.Process();
            GnuConsole.StartInfo.Arguments = "-p";
            GnuConsole.StartInfo.FileName = gnuplotExeFilePath;
            GnuConsole.StartInfo.CreateNoWindow = createNoWindow;
            GnuConsole.StartInfo.UseShellExecute = useShellExecute;
            GnuConsole.StartInfo.RedirectStandardInput = redirectStandardInput;

        }

        

        public void PlotXY(
            string title,
            List list,
            string style
        )
        {
            string command = "replot";
            if (!Started)
            {
                Start();
                command = "plot";
            }
            else
            {
                WritePreCommandsForGnuConsole();
            }
            string name = Math.Abs(title.GetHashCode()).ToString();
            name = ReplaceNumber(name);

            GnuConsole.StandardInput.WriteLine("$" + name + "  list,
            string style
        )
        {
            string command = "replot";
            if (!Started)
            {
                Start();
                command = "splot";
            }
            else
            {
                WritePreCommandsForGnuConsole();
            }
            string name = Math.Abs(title.GetHashCode()).ToString();
            name = ReplaceNumber(name);

            GnuConsole.StandardInput.WriteLine("$" + name + " ();
            /* listに数字を代入*/
            var gnuplot = new GnuplotLib.Gnuplot();
            gnuplot.XaxisLabel = "Speed(m/s)";
            gnuplot.YaxisLabel = "RollAngle(°)";
            gnuplot.PlotXY("V-ViecleRollAngle", list, "lines");