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Editorial Team
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Asked: 2026-06-11T02:06:30+00:00

Having fun evaluating Teechart for .NET Monotouch for iOS. Run into several problems that

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Having fun evaluating Teechart for .NET Monotouch for iOS. Run into several problems that cannot solve. Basically I am trying to present a 2D bar chart with two or three series with up to 24 data points.

Here is my test code

    chart3.Aspect.View3D = false;
    chart3.Legend.Visible = false;
    chart3.Chart.Aspect.ZoomScrollStyle = Steema.TeeChart.Drawing.Aspect.ZoomScrollStyles.Auto;   

    Axis left=chart3.Axes.Left;
    left.Grid.Visible = false; 
    left.Automatic=false;
    left.Minimum=0;
    left.Maximum=20;
    left.Increment=1;

    Axis bottom=chart3.Axes.Bottom;
    bottom.Visible=true;
    bottom.Grid.Visible = false; 

    Steema.TeeChart.Styles.Bar bar1=new Steema.TeeChart.Styles.Bar();
    chart3.Series.Add(bar1);
    bar1.Add(12.0,"Jun 2012");  
    bar1.Add(8.0,"Jul 2012"); 
    bar1.Add(0.5,"Aug 2012"); 
    bar1.Add(6.7,"Sep 2012"); 
    bar1.Pen.Width = 0;
    bar1.Gradient.Visible = true;
    bar1.GetSeriesMark += (series, e) => {object v=series.YValues[e.ValueIndex];   e.MarkText=""+v;};

    Steema.TeeChart.Styles.Bar bar2=new Steema.TeeChart.Styles.Bar();
    chart3.Series.Add(bar2);
    bar2.Add(8.0,"Jun 2012"); 
    bar2.Add(5.0,"Jul 2012"); 
    bar2.Add(5.0,"Aug 2012"); 
    bar2.Add(14.0,"Sep 2012"); 
    bar2.Pen.Width = 0;
    bar2.Gradient.Visible = true;
    bar2.GetSeriesMark += (series, e) => {object v=series.YValues[e.ValueIndex];   e.MarkText=""+v;};

Above code creates two 2D bar style series with four points.

Here is the result I am getting
enter image description here
The major problem is that all bars are floating 0.5 point above zero (notice 8.5 on the left axis where value is 8). Scrolling up shows this
another image
Second issue I am facing is that the library doesn’t take into consideration Maximum value set for the last axis.
If I set Aspect.View3D to true that chart looks much better
enter image description here
3D comes with its own set of issues but we need 2D anyway.

My question is: what I am doing wrong?

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1 Answer

  1. Editorial Team

    yes, you’re correct. I can reproduce the problem here.
    A fix will be included into the next maintenance release which will be available soon.
    In meantime, a workaround would be to set to Manual the ZoomScroll style, which makes to use the default zoom and scroll of the TeeChart library :
    Code :

    _controller.chart.Chart.Aspect.ZoomScrollStyle = Steema.TeeChart.Drawing.Aspect.ZoomScrollStyles.Manual
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