Unable to display 2D chart correctly with Teechart on Monotouch

Question

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?

Josep Josep · Accepted Answer · 2012-09-10T08:30:55

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

Unable to display 2D chart correctly with Teechart on Monotouch

1 Answers