Manual ScaleBreak on Y-axis

[Felipe Saldana]

I am having some trouble getting a scale break to display on my chart.

I only want to have 10 labels on the Y axis so in the BeforeLayout event I do the following

            double max = Math.Floor(chart.PlotArea.YAxis.MaxValue);
            double step = Math.Round( max / 10);

            chart.PlotArea.YAxis.Clear();
            chart.PlotArea.YAxis.AutoScale = false;
            chart.PlotArea.YAxis.AddRange(0, max, step);

            AxisSegment seg = new AxisSegment();
            seg.Name = "asdfasdfasdf";
            seg.MaxValue = 3000;
            seg.MinValue = 100;
            seg.Step = 1000;

            chart.PlotArea.YAxis.ScaleBreaks.Segments.Add(seg);
            chart.PlotArea.YAxis.ScaleBreaks.MaxCount = 1;
            chart.PlotArea.YAxis.ScaleBreaks.Enabled = true;

The range is displays correctly. But when I turn ScaleBreaks.Enabled = true nothing displays on the Y axis. The range does not appear and neither does the ScaleBreak.

Seems like it should be fairly straight forward... anyone have any ideas on why this does not work.

Thanks!

[Bartholomeo Rocca]

Hello Felipe,

I think you need to specify at least two segments when specifying scale breaks manually in order to achieve the desired effect:

ChartSeries series = new ChartSeries();
series.AddItem(700);
series.AddItem(1200);
series.AddItem(2100);
series.AddItem(700);
series.AddItem(3100);

RadChart1.Series.Add(series);

RadChart1.PlotArea.YAxis.Clear();
RadChart1.PlotArea.YAxis.AutoScale = false;
RadChart1.PlotArea.YAxis.AddRange(0, 5000, 1000);

AxisSegment seg2 = new AxisSegment();
seg2.MaxValue = 1500;
seg2.MinValue = 0;
seg2.Step = 500;
RadChart1.PlotArea.YAxis.ScaleBreaks.Segments.Add(seg2);

AxisSegment seg = new AxisSegment();
seg.MaxValue = 5000;
seg.MinValue = 2000;
seg.Step = 1000;
RadChart1.PlotArea.YAxis.ScaleBreaks.Segments.Add(seg);

RadChart1.PlotArea.YAxis.ScaleBreaks.Enabled = true;

Greetings,
Bart.

[Felipe Saldana]

I added another segment and I still get the same results that I stated.

Where are are setting up the chart at? Page_Load?

I am setting the chart in chart_BeforeLayout.....Is it possible that I cannot add any segments in this event?

[Bartholomeo Rocca]

Hello Felipe,

Indeed I'm setting the segments on Page_Load -- it seems setting them on BeforeLayout is not supported by RadChart.


Greetings,
Bart.