Accord.Controls.WavechartBox.show C# (CSharp) Method

        private static WavechartBox show(String title, bool hold, params Tuple<Signal, int>[] series)
        {
            WavechartBox form = null;
            Thread formThread = null;

            AutoResetEvent stopWaitHandle = new AutoResetEvent(false);

            formThread = new Thread(() =>
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);

                // Show control in a form
                form = new WavechartBox();
                form.Text = title;
                form.formThread = formThread;

                if (!String.IsNullOrEmpty(title))
                {
                    form.zedGraphControl.GraphPane.Title.IsVisible = true;
                    form.zedGraphControl.GraphPane.Title.Text = title;
                }

                var sequence = new ColorSequenceCollection(series.Length);

                for (int i = 0; i < series.Length; i++)
                {
                    var signal = series[i].Item1;
                    int channel = series[i].Item2;

                    ComplexSignal complex = signal as ComplexSignal;

                    if (complex != null && complex.Status != ComplexSignalStatus.Normal)
                    {
                        double[] spectrum = Accord.Audio.Tools.GetPowerSpectrum(complex.GetChannel(channel));
                        double[] frequencies = Accord.Audio.Tools.GetFrequencyVector(signal.Length, signal.SampleRate);

                        form.series.Add(new LineItem(i.ToString(), frequencies,
                            spectrum, sequence.GetColor(i), SymbolType.None));

                        form.zedGraphControl.GraphPane.XAxis.Title.Text = "Frequency";
                        form.zedGraphControl.GraphPane.YAxis.Title.Text = "Power";
                    }
                    else
                    {
                        double[] values;
                        if (signal.Channels == 1)
                        {
                            values = signal.ToDouble();
                        }
                        else
                        {
                            ExtractChannel extract = new ExtractChannel(channel);
                            values = extract.Apply(signal).ToDouble();
                        }

                        form.series.Add(new LineItem(i.ToString(), Vector.Range(0, signal.Length).ToDouble(),
                            values, sequence.GetColor(i), SymbolType.None));

                        form.zedGraphControl.GraphPane.XAxis.Title.Text = "Time";
                        form.zedGraphControl.GraphPane.YAxis.Title.Text = "Amplitude";
                    }
                }

                form.zedGraphControl.GraphPane.AxisChange();

                stopWaitHandle.Set();

                Application.Run(form);
            });

            formThread.SetApartmentState(ApartmentState.STA);

            formThread.Start();

            stopWaitHandle.WaitOne();

            if (!hold)
                formThread.Join();

            return form;
        }