public void OffsetPointAt(IDataSeries series, int index, double offset)
{
double yValue = ((double)series.YValues[index]);
yValue += offset;
series.YValues[index] = yValue;
series.InvalidateParentSurface(RangeMode.None);
}
private void UpdateSpectrogramHeatmapSeries(XyDataSeries <double, double> series)
{
// Compute the new spectrogram frame
for (int x = 99; x >= 0; x--)
{
for (int y = 0; y < 1024; y++)
{
_spectrogramBuffer[x, y] = (x == 99) ? series.YValues[y] : _pastFrame[x + 1, y];
}
}
// Preserve the past frame, as current spectrogram is computed based on last + Xy fft values
Array.Copy(_spectrogramBuffer, _pastFrame, _spectrogramBuffer.Length);
// Forces Heatmap to redraw after updating values
_uniformHeatmapDataSeries.InvalidateParentSurface(RangeMode.None);
}
public TradeOverlayExampleViewModel()
{
// Create some data to show on the chart
_chartDataSeries = new XyDataSeries <DateTime, double>();
_chartDataSeries.SeriesName = "CL FUT JUN15 2013";
// Get some price data, trades
List <Trade> trades;
List <NewsEvent> newsEvents;
var priceData = DataManager.Instance.GetRandomTrades(out trades, out newsEvents);
// Buffer above and append all in one go to avoid multiple recalculations of series range
_chartDataSeries.Append(priceData.TimeData, priceData.CloseData);
// Create annotations
TradeAnnotations = CreateAnnotations(trades, newsEvents);
_chartDataSeries.InvalidateParentSurface(RangeMode.ZoomToFit);
}