SeriesMarks AutoPosition cuts off marks on top

[OMP]

Hi,

In our project, we are using SeriesMarks.AutoPosition, since this option makes sure series marks are put at an optimal position and we don't have to bother about putting marks at custom positions.
However, we bumped into the following situation, where the series mark is cut off at the top of the chart: (left: 2 values of 500, no cutoff - right: 1 value of 500, 1 value of 501, cutoff)

Left: no cutoff - Right: cutoff

label_cutoff.png (32.26 KiB) Viewed 23206 times

The code to produce the right image:

Code: Select all

Steema.TeeChart.Styles.Line line = new Steema.TeeChart.Styles.Line(tChart1.Chart);
line.Add(0, 0);
line.Add(1, 0);
line.Add(2, 500);
line.Add(3, 501);
line.Add(4, 0);
line.Add(5, 0);
line.Add(6, 0);

line.Marks.Visible = true;
line.Marks.Style = Steema.TeeChart.Styles.MarksStyles.LabelPercentTotal;
line.Marks.AutoPosition = true;

It seems strange that in the right image, the 2nd series mark is placed above the 1st series mark, causing it to be cut off, while there is plenty of space below the 1st series mark, so it should not be cut off. (as is done in the left image)
Is it possible to make sure the series mark is not cutoff in the right image without using custom series marks positions?

Best Regards,
Steven

[Christopher]

Hello Steven,

It seems strange that in the right image, the 2nd series mark is placed above the 1st series mark, causing it to be cut off, while there is plenty of space below the 1st series mark, so it should not be cut off. (as is done in the left image)
Is it possible to make sure the series mark is not cutoff in the right image without using custom series marks positions?

Using the latest version of TeeChart.dll, the chart created by your code looks like this:

636022756741665024.png (23.71 KiB) Viewed 23193 times

toggling to 2D gives me this:

636022759525775819.png (17.06 KiB) Viewed 23191 times

which version of TeeChart.dll are you using?

[OMP]

Hi Christopher,

Thank you for your reply. I noticed that I forgot to include a small but important part in my code snippet:

Code: Select all

this.tChart1.Aspect.View3D = false;
this.tChart1.Header.Visible = false;

I suspect that making the header invisible triggers the series mark to be cut off.

We are currently using TeeChart version 4.1.2015.5144.

[Narcís]

Hi Steven,

Thank you for your reply. I noticed that I forgot to include a small but important part in my code snippet:

Code: Select all

this.tChart1.Aspect.View3D = false;
this.tChart1.Header.Visible = false;

I suspect that making the header invisible triggers the series mark to be cut off.

Yes, doing so I got the same result.

Is it possible to make sure the series mark is not cutoff in the right image without using custom series marks positions?

I'm afraid not, the only workarounds I can think are using CustomChartRect like this:

Code: Select all

      this.tChart1.Aspect.View3D = false;
      this.tChart1.Header.Visible = false;

      Steema.TeeChart.Styles.Line line = new Steema.TeeChart.Styles.Line(tChart1.Chart);
      line.Add(0, 0);
      line.Add(1, 0);
      line.Add(2, 500);
      line.Add(3, 501);
      line.Add(4, 0);
      line.Add(5, 0);
      line.Add(6, 0);

      line.Marks.Visible = true;
      line.Marks.Style = Steema.TeeChart.Styles.MarksStyles.LabelPercentTotal;
      line.Marks.AutoPosition = true;

      //tChart1.Panel.MarginTop = 10;
      //tChart1.Axes.Left.MaximumOffset = 30;

      tChart1.Draw();

      var rect = tChart1.Chart.ChartRect;
      var offset = 10;
      rect.Offset(new Point(0, offset));
      rect.Inflate(0, -offset);
      
      tChart1.Chart.CustomChartRect = true;
      tChart1.Chart.ChartRect = rect;

or increasing panel margin:

Code: Select all

      tChart1.Panel.MarginTop = 10;

or left axis offsets:

Code: Select all

      tChart1.Axes.Left.MaximumOffset = 30;

[OMP]

Hi Narcís,

Thank you for offering these workarounds.
I will further investigate what works best in our case.