Hi,
I need to create a stacked area chart with negative values. The chart should look exactly like the Excel chart in the attached screenshot. As long as Stacked area charts do not support negative values, I tried to create stacked series manually by adding values from previous series to the next.
I.e.

var stackedValues = new List();

// add the first area series
var areaSeries = (NAreaSeries)chart.Series.Add(SeriesType.Area);
areaSeries.FillStyle = new NColorFillStyle(Color.RoyalBlue);
var areaSeriesValues = new List { 10, 23, 12, 24, 16, 19, 17 };
stackedValues.AddRange(areaSeriesValues);
areaSeries.Values.AddRange(stackedValues);

// add the second area series
var areaSeries2 = (NAreaSeries)chart.Series.Add(SeriesType.Area);
areaSeries2.FillStyle = new NColorFillStyle(Color.DarkSalmon);
var areaSeries2Values = new List { -5, -13, -22, 15, 26, 11, -12 };

for (var i = 0; i < areaSeries2Values.Count; i++)
{
stackedValues[i] += areaSeries2Values[i];
}
areaSeries2.Values.AddRange(stackedValues);

But the first series overlaps the second, and the chart does not look like the Excel chart.
How can I make Nevron area chart with negative values look exactly like Excel stacked area chart? Or could I emulate Excel stacked area chart using another series type?

Thanks

Attachments

StackedAreaChart.png (341 views, 40.00 KB)

Hello Alex,

You can use an area series (NAreaSeries) for the blue area and place a high-low series (NHighLowSeries) on top to display the red area.

In general our stacked area charts do not regard negative values - they use only absolute values.

Best Regards,
Nevron Support Team

Thank you very much! Using NHighLowSeries resolves the problem