// Called when the AppendDataCommand is invoked via button click on the view
private void AppendData()
{
var newData = _dataSource.GetRandomWalkSeries(50);
_dataSeries0.Append(newData.XData, newData.YData);
ViewportManager.ZoomExtents();
}
private void OnRunExample()
{
Messages.Clear();
OpacityParamsForInstructions = null;
Task.Factory.StartNew(() =>
{
// Add DataSeries for the candlestick and SMA series
var ds0 = new OhlcDataSeries <DateTime, double>()
{
SeriesName = "$SPX500"
};
var ds1 = new XyDataSeries <DateTime, double>()
{
SeriesName = "MA 200"
};
var ds2 = new XyDataSeries <DateTime, double>()
{
SeriesName = "MA 50"
};
Messages.Add("Generating 1M candlesticks ...");
// Append historical bars to data series
var prices = _marketDataService.GetHistoricalData(1000000);
Messages.Add("Appending Data to chart ...");
ds0.Append(
prices.Select(x => x.DateTime),
prices.Select(x => x.Open),
prices.Select(x => x.High),
prices.Select(x => x.Low),
prices.Select(x => x.Close));
//ds1.Append(prices.Select(x => x.DateTime), prices.Select(y => _sma50.Push(y.Close).Current));
PriceSeries = ds0;
Messages.Add("Done!");
ViewportManager.ZoomExtents();
});
}
private void UpdateHistoryDataSeriesCollection(HistoryDataUpdatedEventArg arg)
{
var dataList = arg.HistoryDataDtos.ToList();
var timeType = arg.DataTimeType;
var dataTypeName = arg.DataTypeName;
Application.Current.Dispatcher.BeginInvoke(new Action(() =>
{
SeriesViewModels.Clear();
if (dataList.Count > 0)
{
int index = 0;
var colors = _colors;
foreach (var historyData in dataList)
{
var ds0 = new XyDataSeries <DateTime, double>()
{
SeriesName = historyData.pointName
};
SeriesViewModels.Add(
new ChartSeriesViewModel(ds0,
new FastLineRenderableSeries()
{
SeriesColor = colors[index],
StrokeThickness = 2,
//PointMarker = new EllipsePointMarker()
//{
// Fill = colors[index],
// Stroke = colors[index],
// StrokeThickness = 1,
// Width = 3,
// Height = 3,
//}
}
));
index++;
List <DatavalueDTO> data = historyData.dataValue.OrderBy(d => d.time).ToList();
ds0.Append(data.Select(x => x.time), data.Select(y => double.Parse(y.value)));
}
ViewportManager.ZoomExtents();
YAxis.VisibleRange.GrowBy(0.4, 0.4);
}
}));
//Application.Current.Dispatcher.BeginInvoke(new Action(() =>
//{
// ResetDataSeries();
// if (dataList.Count > 0)
// {
// foreach (var historyData in dataList)
// {
// var lineSeries = new LineSeries();
// lineSeries.Title = historyData.pointName;
// lineSeries.Values = new ChartValues<DateModel>();
// lineSeries.LabelPoint = value => $"{value.Y} {historyData.unit}";
// foreach (var dataValue in historyData.dataValue)
// {
// lineSeries.Values.Add(new DateModel { Value = double.Parse(dataValue.value), DateTime = dataValue.time });
// }
// SeriesCollection.Add(lineSeries);
// }
// string unit = dataList[0]?.unit;
// string dateFormat = string.Empty;
// switch (timeType)
// {
// case TimeType.Day:
// dateFormat = "HH:mm";
// break;
// case TimeType.Month:
// dateFormat = "d日 HH:mm";
// break;
// case TimeType.Year:
// dateFormat = "MM月-d日 HH:mm";
// break;
// default:
// break;
// }
// YFormatter = value => $"{value} {unit}";
// XFormatter = value =>
// {
// if (value > 0)
// {
// var resultValue = new System.DateTime((long)(value * TimeSpan.FromHours(1).Ticks)).ToString(dateFormat);
// return resultValue;
// }
// else
// return "0";
// };
// var colors = CartesianChart.Colors;
// int index = 0;
// List<SeriesInfo> seriesList = new List<SeriesInfo>();
// foreach (var item in SeriesCollection.Chart.View.ActualSeries)
// {
// var seriesItem = (item as Series);
// if (seriesItem != null)
// {
// var color = colors.ElementAt(index++);
// seriesList.Add(new SeriesInfo()
// {
// Title = seriesItem.Title,
// Fill = new SolidColorBrush(color),// == null ? (seriesItem as IFondeable).PointForeround : seriesItem.Fill,
// Stroke = seriesItem.Stroke,
// StrokeThickness = seriesItem.StrokeThickness
// });
// }
// }
// SeriesList.AddRange(seriesList);
// }
// DataTypeName = dataTypeName;
//}));
}
