public readonly int SDataCount; // number of data points in series / chart
/// <summary>
/// ViewModel constructor, requires data source and number of data point in series / chart
/// </summary>
/// <param name="ohlc">data source</param>
/// <param name="nseries">number of data points</param>
public ViewModelCandleStickChart(DataTSOHLC ohlc, int nseries)
{
// init properties
DSOHLC = ohlc;
SDataCount = nseries;
CSOpenCloseDown = new ObservableCollection <DataPoint>();
CSOpenCloseUp = new ObservableCollection <DataPoint>();
CSHighLowDown = new ObservableCollection <DataPoint>();
CSHighLowUp = new ObservableCollection <DataPoint>();
XAxisLabelFormatter = (d0) => "";
// pre-allocate data points
for (int i0 = 0; i0 < SDataCount; ++i0)
{
for (int i1 = 0; i1 < 3; ++i1)
{
SetCollectionDataPoint(CSOpenCloseDown, -1, i0 + 1, double.NaN);
SetCollectionDataPoint(CSOpenCloseUp, -1, i0 + 1, double.NaN);
SetCollectionDataPoint(CSHighLowDown, -1, i0 + 1, double.NaN);
SetCollectionDataPoint(CSHighLowUp, -1, i0 + 1, double.NaN);
}
}
}
/// <summary>
/// Update data source and all data point
/// </summary>
/// <param name="ohlc">new data source</param>
/// <param name="current">current print data array in DataCurrent.Print format</param>
public void ChangeDataSource(DataTSOHLC ohlc, double[] currentprint)
{
DSOHLC = ohlc; // set to new data source
NewData(currentprint, true); // update all data points, will cause GUI to redraw
}
