public EditContractsViewModel() : base()
{
selectedEmployee = new Employee();
selectedTypeContract = new TypeContract();
selectedCurrency = new Currency();
selectedDepartment = new Department();
selectedPosition = new Position();
selectedTypeRate = new TypeRate();
selectedTerminationWay = new TerminationWay();
}
public void Dispose()
{
date = null;
rate = null;
sma = null;
ema = null;
currencyList = null;
count = 0;
parametrEMA = 0;
typeRate = null;
}
public void Calculate(List <CurrencyRate> _currencyList, int _count, double _parametrEMA, TypeRate _typeRate)
{
currencyList = _currencyList;
count = _count;
parametrEMA = _parametrEMA;
typeRate = _typeRate;
for (int i = 0; i < count; i++)
{
date.Add(currencyList[i].Date);
}
List <double> currencyRate = new List <double>();
double sum = 0;
switch (typeRate.Name)
{
case "Close":
currencyRate.AddRange(currencyList.Select(item => item.Close));
for (int i = 0; i < count; i++)
{
sum += currencyRate[i];
sma.Add(sum / (i + 1));
}
ema.Add(sma[0]);
for (int i = 1; i < count; i++)
{
// EMA = (CLOSE(i) * P) + (EMA(i - 1) * (1 - P))
// где:
// CLOSE(i) — цена закрытия текущего периода;
// EMA(i - 1) — значение скользящего среднего предыдущего периода;
// P — доля использования значения цен.
ema.Add(currencyRate[i] * parametrEMA + (ema[i - 1] * (1 - parametrEMA)));
}
break;
case "Open":
currencyRate.AddRange(currencyList.Select(item => item.Open));
//double sum = 0;
for (int i = 0; i < count; i++)
{
sum += currencyRate[i];
sma.Add(sum / (i + 1));
}
ema.Add(sma[0]);
for (int i = 1; i < count; i++)
{
ema.Add(currencyRate[i] * parametrEMA + (ema[i - 1] * (1 - parametrEMA)));
}
break;
case "High":
currencyRate.AddRange(currencyList.Select(item => item.High));
for (int i = 0; i < count; i++)
{
sum += currencyRate[i];
sma.Add(sum / (i + 1));
}
ema.Add(sma[0]);
for (int i = 1; i < count; i++)
{
ema.Add(currencyRate[i] * parametrEMA + (ema[i - 1] * (1 - parametrEMA)));
}
break;
default:
currencyRate.AddRange(currencyList.Select(item => item.Low));
for (int i = 0; i < count; i++)
{
sum += currencyRate[i];
sma.Add(sum / (i + 1));
}
ema.Add(sma[0]);
for (int i = 1; i < count; i++)
{
ema.Add(currencyRate[i] * parametrEMA + (ema[i - 1] * (1 - parametrEMA)));
}
break;
}
for (int i = 0; i < count; i++)
{
rate.Add(currencyRate[i]);
}
}
private void BuildChartButton_Click(object sender, EventArgs e)
{
if (currencyList != null && currencyList.Count != 0)
{
if (periodTextBox.Text != "")
{
count = Int32.Parse(periodTextBox.Text);
}
else
{
count = 20;
}
if (parametrEmaTextBox.Text != "")
{
parametrEMA = Double.Parse(parametrEmaTextBox.Text, new CultureInfo("en-US"));
}
else
{
parametrEMA = 0.5;
}
TypeRate typeRate = typeRateComboBox.SelectedItem as TypeRate;
MovingAverageCalculate calc = new MovingAverageCalculate();
calc.Calculate(currencyList, count, parametrEMA, typeRate);
//count = period;
#region calc
//List<DateTime> date = new List<DateTime>();
//for (int i = 0; i < count; i++)
//{
// date.Add(currencyList[i].Date);
//}
//double[] sma = new double[count];
//double[] ema = new double[count];
//List<double> currencyRate = new List<double>();
//double sum = 0;
//switch (typeRate.Name)
//{
// case "Close":
// currencyRate.AddRange(currencyList.Select(item => item.Close));
// for (int i = 0; i < count; i++)
// {
// sum += currencyRate[i];
// sma[i] = sum / (i + 1);
// }
// ema[0] = sma[0];
// for (int i = 1; i < count; i++)
// {
// // EMA = (CLOSE(i) * P) + (EMA(i - 1) * (1 - P))
// // где:
// // CLOSE(i) — цена закрытия текущего периода;
// // EMA(i - 1) — значение скользящего среднего предыдущего периода;
// // P — доля использования значения цен.
// ema[i] = currencyRate[i] * parametrEMA + (ema[i - 1] * (1 - parametrEMA));
// }
// break;
// case "Open":
// currencyRate.AddRange(currencyList.Select(item => item.Open));
// //double sum = 0;
// for (int i = 0; i < count; i++)
// {
// sum += currencyRate[i];
// sma[i] = sum / (i + 1);
// }
// ema[0] = sma[0];
// for (int i = 1; i < count; i++)
// {
// ema[i] = currencyRate[i] * parametrEMA + (ema[i - 1] * (1 - parametrEMA));
// }
// break;
// case "High":
// currencyRate.AddRange(currencyList.Select(item => item.High));
// for (int i = 0; i < count; i++)
// {
// sum += currencyRate[i];
// sma[i] = sum / (i + 1);
// }
// ema[0] = sma[0];
// for (int i = 1; i < count; i++)
// {
// ema[i] = currencyRate[i] * parametrEMA + (ema[i - 1] * (1 - parametrEMA));
// }
// break;
// default:
// currencyRate.AddRange(currencyList.Select(item => item.Low));
// for (int i = 0; i < count; i++)
// {
// sum += currencyRate[i];
// sma[i] = sum / (i + 1);
// }
// ema[0] = sma[0];
// for (int i = 1; i < count; i++)
// {
// ema[i] = currencyRate[i] * parametrEMA + (ema[i - 1] * (1 - parametrEMA));
// }
// break;
//}
//List<double> rate = new List<double>();
//for (int i = 0; i < count; i++)
//{
// rate.Add(currencyRate[i]);
//}
#endregion
chart1.ChartAreas[0].AxisX.MajorGrid.Interval = 1;
//chart1.ChartAreas[0].AxisY.StripLines.Add(new StripLine());
//chart1.ChartAreas[0].AxisY.StripLines[0].BackColor = Color.FromArgb(80, 252, 180, 65);
//chart1.ChartAreas[0].AxisY.StripLines[0].StripWidth = 4;
//chart1.ChartAreas[0].AxisY.StripLines[0].Interval = 10;
//chart1.ChartAreas[0].AxisY.StripLines[0].IntervalOffset = 20;
chart1.ChartAreas[0].AxisY.Maximum = calc.rate.Max() + 2;
chart1.ChartAreas[0].AxisY.Minimum = calc.rate.Min() - 2;
chart1.Series[0].XValueType = ChartValueType.Date;
chart1.Series[0].Points.DataBindXY(calc.date, calc.sma);
chart1.Series[1].XValueType = ChartValueType.Date;
chart1.Series[1].Points.DataBindXY(calc.date, calc.ema);
chart1.Series[2].XValueType = ChartValueType.Date;
chart1.Series[2].Points.DataBindXY(calc.date, calc.rate);
calc.Dispose();
//chart1.ChartAreas[0].AxisY.Maximum = rate.Max() + 2;
//chart1.ChartAreas[0].AxisY.Minimum = rate.Min() - 2;
//chart1.Series[0].XValueType = ChartValueType.Date;
//chart1.Series[0].Points.DataBindXY(date, sma);
//chart1.Series[1].XValueType = ChartValueType.Date;
//chart1.Series[1].Points.DataBindXY(date, ema);
//chart1.Series[2].XValueType = ChartValueType.Date;
//chart1.Series[2].Points.DataBindXY(date, rate);
}
}