Forums Ultimate UI for Windows Forms
Your Privacy Matters: We use our own and third-party cookies to improve your experience on our website. By continuing to use the website we understand that you accept their use. Cookie Policy
Close
henry
1300
Line at zero for a composite chart
posted

Hi I woul like to add a horizontale line at zero on the x axis on my composite chart.

 

I tried this :

            IAdvanceAxis x = (IAdvanceAxis)e.Grid["X"];
            IAdvanceAxis y = (IAdvanceAxis)e.Grid["Y"];
            if (x != null)
            {
                int target = 0;
                int yTarget = (int)y.Map(target);
                int xStart = (int)x.Map(0);
                int xEnd = (int)x.Map(5);
                Line line = new Line(new Point(xStart, yTarget), new Point(xEnd, yTarget));
                line.PE.Stroke = Color.Red;
                line.PE.StrokeWidth = 3;
                e.SceneGraph.Add(line);
            }

 

But nothing appears.

Any idea ?

Thanks

  • 53790
    Verified Answer
    posted

    Hi,

    Generally your line is there, but it is not visible, because your Axis X is over the line. To solve this task we have two options.

    Option 1: We could used Range properties. For example:

    - RangeType = Custom;

    - RangeMin = - 50;

    -RangeMax = 100

    By this way we could change the range of your Y axis and when your chart line has zero values, they will be visible.

    Option 2:

    We could used LineAppearance properties and we could change the Thickness of the line. For example:

    

    LineAppearance la = new LineAppearance(ultraChart1);
    

    la.IconAppearance.Icon = SymbolIcon.Circle;
    

    la.IconAppearance.IconSize = SymbolIconSize.Large;
    

    la.LineStyle.EndStyle = LineCapStyle.DiamondAnchor;
    

    la.Thickness = 8;
    

    LineChartAppearance lca = new LineChartAppearance();
    

    lca.LineAppearances.Add(la);
    

    myColumnLayer.ChartTypeAppearance = lca;

    I made small smple for you using my second approach. Could you please take a look at the attached sample for more details. Let me know if you have  any questions.

    Regards

    CompositeLineChart_Year_3.zip