/// <summary>
///
/// </summary>
public void LoadCsv(string path)
{
var csv = new CsvImport().Load(path);
for (int column = 0; column < csv.ColumCount; column++)
{
var wave = new Waveform();
var row = 0;
for (row = 0; row < csv.RowCount; row++)
{
var cell = csv.Table[row, column];
if (!string.IsNullOrEmpty(cell))
{
if (double.TryParse(cell, out double dummy) == false)
{
cell = cell.ToUpper();
if (cell.Contains("NAME"))
{
wave.Name = cell.Split('=')[1].Trim();
}
if (cell.Contains("DELTAX"))
{
wave.DeltaX = double.Parse(cell.Split('=')[1].Trim());
}
}
else
{
break;
}
}
}
wave.YArray = new double[csv.RowCount - row];
var yindex = 0;
for (; row < csv.RowCount; row++)
{
var cell = csv.Table[row, column];
if (string.IsNullOrEmpty(cell))
{
break;
}
else if (double.TryParse(cell, out double value) == true)
{
wave.YArray[yindex++] = value;
}
else
{
throw new InvalidCastException();
}
}
Waveforms.Add(wave);
}
}
/// <summary>
///
/// </summary>
/// <param name="amplitude"></param>
/// <param name="cycleNum">The periodic count. eg.:1,2,3...n</param>
/// <param name="resolution">Period resolution in radian. min: 2*Math.PI , or Math.PI/20 </param>
/// <param name="phase">Phase in radian. eg.: Math.PI/2 = 90degree </param>
/// <param name="offset"></param>
/// <returns></returns>
public static void Generator(double amplitude,
int cycleNum,
double resolution,
double phase,
double offset,
WaveformCollection waveforms)
{
var wave = new Waveform();
wave.Name = "Sine Wave" + Guid.NewGuid().ToString();
wave.Timestamp = new DateTime(1985, 01, 23, 07, 30, 33);
wave.DeltaX = 1; /*sec*/
double[] sequence = new double[0];
int index = 0;
for (int cycle = 0; cycle < cycleNum; cycle++)
{
for (double p = 0; p <= (2 * Math.PI); p += resolution)
{
Array.Resize(ref sequence, index + 1);
sequence[index++] = amplitude * Math.Sin(p + phase) + offset;
}
}
wave.YArray = new double[index + 1];
sequence.CopyTo(wave.YArray, 0);
for (int i = 0; i < wave.YArray.Length; i++)
{
wave.YArray[i] = Math.Round(wave.YArray[i], AppConstants.RoundDigits);
}
waveforms.Add(wave);
}
/// <summary>
///
/// </summary>
public static void CreateSample2(WaveformCollection waveforms)
{
var wave1 = new Waveform();
wave1.Name = "Sine Wave";
wave1.Timestamp = new DateTime(1985, 01, 23, 07, 30, 33);
wave1.DeltaX = 1; /*sec*/
wave1.YArray = new double[] { 0, 0.707, 1, 0.707, 0, -0.707, -1, -0.707 };
waveforms.Add(wave1);
}
public static void Generator(int length, double frequency, double sampleRate, WaveformCollection waveforms)
{
/*
* This data was generated using the function definition:
*
* sin(2 * pi * freq * time)
*
* freq = 5Hz
* sampling rate = 100Hz
*
* 0. => sin( 2 * pi 0/100 * 5) = 0.
* 1. => sin( 2 * pi 1/100 * 5) = 0.3090
* 2. => sin( 2 * pi 1/100 * 5) = 0.5877
*
* */
var wave = new Waveform();
wave.Name = "wave1";
wave.Freq = frequency; /*Hz*/
wave.DeltaX = 1 / sampleRate; /*sec*/
wave.Timestamp = new DateTime(1985, 01, 23, 07, 30, 33);
wave.YArray = new double[length];
for (int pointIndex = 0; pointIndex < length; pointIndex++)
{
wave.YArray[pointIndex] = Math.Sin(2 * Math.PI * (pointIndex / sampleRate) * frequency);
}
for (int i = 0; i < wave.YArray.Length; i++)
{
wave.YArray[i] = Math.Round(wave.YArray[i], AppConstants.RoundDigits);
}
waveforms.Add(wave);
}
