/// <summary> /// Updates each point. /// </summary> /// <param name="dataPoint">The data point to update.</param> protected override void UpdateDataPoint(DataPoint dataPoint) { if (SeriesHost == null || PlotArea == null) { return; } object category = dataPoint.IndependentValue ?? (this.ActiveDataPoints.IndexOf(dataPoint) + 1); Range <double> coordinateRange = ActualIndependentCategoryAxis.GetPlotAreaCoordinateRange(category); if (!coordinateRange.HasData) { return; } double plotAreaHeight = ActualDependentRangeAxis.GetPlotAreaCoordinate(ActualDependentRangeAxis.Range.Maximum); IEnumerable <ColumnSeries> columnSeries = SeriesHost.Series.OfType <ColumnSeries>().Where(series => series.ActualIndependentCategoryAxis == ActualIndependentCategoryAxis); int numberOfSeries = columnSeries.Count(); double coordinateRangeWidth = (coordinateRange.Maximum - coordinateRange.Minimum); double segmentWidth = coordinateRangeWidth * 0.8; double columnWidth = segmentWidth / numberOfSeries; int seriesIndex = columnSeries.IndexOf(this); double dataPointY = ActualDependentRangeAxis.GetPlotAreaCoordinate(ValueHelper.ToDouble(dataPoint.ActualDependentValue)); double zeroPointY = ActualDependentRangeAxis.GetPlotAreaCoordinate(0); double offset = seriesIndex * Math.Round(columnWidth) + coordinateRangeWidth * 0.1; double dataPointX = coordinateRange.Minimum + offset; if (_categoriesWithMultipleDataPoints.ContainsKey(category)) { // Multiple DataPoints share this category; offset and overlap them appropriately IGrouping <object, DataPoint> categoryGrouping = _categoriesWithMultipleDataPoints[category]; int index = categoryGrouping.IndexOf(dataPoint); dataPointX += (index * (columnWidth * 0.2)) / (categoryGrouping.Count() - 1); columnWidth *= 0.8; Canvas.SetZIndex(dataPoint, -index); } if (!double.IsNaN(dataPointY) && !double.IsNaN(dataPointX) && !double.IsNaN(zeroPointY)) { double left = Math.Round(dataPointX); double width = Math.Round(columnWidth); double top = Math.Round(plotAreaHeight - Math.Max(dataPointY, zeroPointY) + 0.5); double bottom = Math.Round(plotAreaHeight - Math.Min(dataPointY, zeroPointY) + 0.5); double height = bottom - top + 1; Canvas.SetLeft(dataPoint, left); Canvas.SetTop(dataPoint, top); dataPoint.Width = width; dataPoint.Height = height; } }
/// <summary> /// Updates each point. /// </summary> /// <param name="dataPoint">The data point to update.</param> protected override void UpdateDataPoint(DataPoint dataPoint) { if (SeriesHost == null || PlotArea == null) { return; } object category = dataPoint.IndependentValue ?? (this.ActiveDataPoints.IndexOf(dataPoint) + 1); Range <double> coordinateRange = ActualIndependentCategoryAxis.GetPlotAreaCoordinateRange(category); if (!coordinateRange.HasData) { return; } IEnumerable <BarSeries> barSeries = SeriesHost.Series.OfType <BarSeries>().Where(series => series.ActualIndependentCategoryAxis == ActualIndependentCategoryAxis); int numberOfSeries = barSeries.Count(); double coordinateRangeHeight = (coordinateRange.Maximum - coordinateRange.Minimum); double segmentHeight = coordinateRangeHeight * 0.8; double barHeight = segmentHeight / numberOfSeries; int seriesIndex = barSeries.IndexOf(this); double dataPointX = ActualDependentRangeAxis.GetPlotAreaCoordinate(ValueHelper.ToDouble(dataPoint.ActualDependentValue)); double zeroPointX = ActualDependentRangeAxis.GetPlotAreaCoordinate(0); double offset = seriesIndex * Math.Round(barHeight) + coordinateRangeHeight * 0.1; double dataPointY = coordinateRange.Minimum + offset; if (_categoriesWithMultipleDataPoints.ContainsKey(category)) { // Multiple DataPoints share this category; offset and overlap them appropriately IGrouping <object, DataPoint> categoryGrouping = _categoriesWithMultipleDataPoints[category]; int index = categoryGrouping.IndexOf(dataPoint); dataPointY += (index * (barHeight * 0.2)) / (categoryGrouping.Count() - 1); barHeight *= 0.8; Canvas.SetZIndex(dataPoint, -index); } if (ValueHelper.CanGraph(dataPointX) && ValueHelper.CanGraph(dataPointY) && ValueHelper.CanGraph(zeroPointX)) { double top = Math.Round(dataPointY); double height = Math.Round(barHeight); double left = Math.Round(Math.Min(dataPointX, zeroPointX) - 0.5); double right = Math.Round(Math.Max(dataPointX, zeroPointX) - 0.5); double width = right - left + 1; Canvas.SetLeft(dataPoint, left); Canvas.SetTop(dataPoint, top); dataPoint.Width = width; dataPoint.Height = height; } }