setting minimum value of PolarBar chart

[Pete]

i would like to have the center value of a Polar chart to be 0. the chart type is PolarBar.

if i set the following properties of the Polar chart, the axes start at 0, but not at the center, meaning that the first "ring" is 0. i would like the center/intersection of the axes lines to be 0.

TChart1.Axes.Left.AutomaticMinimum = false;
TChart1.Axes.Right.AutomaticMinimum = false;
TChart1.Axes.Bottom.AutomaticMinimum = false;
TChart1.Axes.Top.AutomaticMinimum = false;
TChart1.Axes.Left.Minimum = 0.0;
TChart1.Axes.Right.Minimum = 0.0;
TChart1.Axes.Bottom.Minimum = 0.0;
TChart1.Axes.Top.Minimum = 0.0;

thanks,

pete.

[Sandra]

Hello Pete,

I have made a simple code, where I have added a 0 values in my Polar Series and the value is drawn in correct position:

Code: Select all

        private void InitializeChart()
        {
            tChart1.Aspect.View3D = false;

            Steema.TeeChart.Styles.Polar polar1 = new Polar(tChart1.Chart);
            tChart1.Aspect.View3D = false;
            polar1.Circled = true;
            tChart1.Dock = DockStyle.Fill;
  
            polar1.Brush.Visible = false;

            for (int i = 0; i < 16; i++ )
            {

                polar1.Add(i,i);


            }
            tChart1.Axes.Left.AutomaticMinimum = false;
            tChart1.Axes.Right.AutomaticMinimum = false;
            tChart1.Axes.Bottom.AutomaticMinimum = false;
            tChart1.Axes.Top.AutomaticMinimum = false;
            tChart1.Axes.Left.Minimum = 0.0;
            tChart1.Axes.Right.Minimum = 0.0;
            tChart1.Axes.Bottom.Minimum = 0.0;
            tChart1.Axes.Top.Minimum = 0.0;
            polar1.AngleIncrement = 0;
        }

The zeros as you see in the Chart correspond to axes labels zero values of each axes, are painted displaced because you can see the labels and these aren't overlapped.

Thanks,

[Narcís]

Hi Pete,

Complementing Sandra's answer, I don't think this is a bug but normal TeeChart behavior. Actually, zero is in the center but labels are shifted from the axes as done with all other labels. A picture is worth a thousand words:

PolarBarAtZero.png (290.77 KiB) Viewed 4964 times

As shown here, each "0" label overlaps the pen of a neighbor axis. It's not that "0" labels in that axis are not referring to the center of the chart.

If the explanation is not clear please let me know.

[Pete]

thanks, Sandra and Narcis,

the picture is very similar to what i was seeing. so, most likely the center of my chart is also 0.

pete.