Margin with custom axis

[acastro]

Hello,
Please find attached an example to understand my question
http://193.145.251.126/pnp/files/yxAwTREaT/labels.ten

If you open the chart editor and switch in the first serie the left axis of the serie between "Left" and "Custom 0" you can see with the left margin changes, and sometimes with "Custom 0" you cannot see the whole labels in the left axis. I have find the difference between left and custom 0 axis regarding to this margin but I didn't find it, how can I configurate my custom axis to have the same margin as "Left" axis?

Thanks in advance,

[Christopher]

I have find the difference between left and custom 0 axis regarding to this margin but I didn't find it, how can I configurate my custom axis to have the same margin as "Left" axis?

This seems to work okay at runtime, e.g.

Code: Select all

    private void InitializeChart()
    {
      tChart1.Import.Template.Load(@"C:\tmp\labels.ten");
      tChart1[1].CustomVertAxis = null;
    }

Can you please confirm if this code reliably renders the axes correctly?

[acastro]

Yes but you are disabling the custom axis, I want to have the custom axis but having the same behaviour in the margin as the "Lef" axis.

[Christopher]

Yes but you are disabling the custom axis, I want to have the custom axis but having the same behaviour in the margin as the "Lef" axis.

here is the code I'm using:

Code: Select all

    private void InitializeChart()
    {
      tChart1.Import.Template.Load(@"C:\tmp\labels.ten");  //labels1.png

      //tChart1.Panel.MarginLeft = 10; //uncomment for labels2.png
      //tChart1[1].CustomVertAxis = null; //uncomment for labels3.png
    }

and here are the three resulting images:

labels1.png (24.62 KiB) Viewed 17779 times

labels2.png (22.67 KiB) Viewed 17782 times

labels3.png (23.9 KiB) Viewed 17779 times

I'm not sure what the problem is with any of these images - could you please explain it to me?

[acastro]

I want to have the Label2.png result, but without changing the MarginLeft to 10. I mean, If I put the axis "Left" it is shown correctly with MarginLeft =3. Why with axis "Custom 0" it now shown in the same way with MarginLeft = 3?

[Christopher]

I want to have the Label2.png result, but without changing the MarginLeft to 10. I mean, If I put the axis "Left" it is shown correctly with MarginLeft =3. Why with axis "Custom 0" it now shown in the same way with MarginLeft = 3?

This is because custom axes are behave differently to the default axes, and this difference is by design. Custom axes do not automatically resize the Chart rectangle, as default axes do, which means the margins have to be set manually.

[acastro]

Custom axes do not automatically resize the Chart rectangle, as default axes do, which means the margins have to be set manually.

Why not? I think it would be logical to have the same behaviour...

Do you have any code to set this margins automatically? I mean depending on the size of the chart and the lenght of the labels in the axis...

Thanks

[Christopher]

Why not? I think it would be logical to have the same behaviour...

Default axes position are known by the TeeChart code, that is why they are default. Knowing the position means that some calculations can be done to resize the chart rectangle. Custom axes positions are not known by the TeeChart code, they are set by the user. This means that calculations involving the resizing of the chart rectangle cannot be done automatically.

Do you have any code to set this margins automatically? I mean depending on the size of the chart and the lenght of the labels in the axis...

You could try something similar to this:

Code: Select all

    private void InitializeChart()
    {
      tChart1.Import.Template.Load(@"C:\tmp\labels.ten");  //labels1.png
      tChart1.Draw();

      double maxVal = tChart1[1].YValues.Maximum;

      float width = tChart1.Graphics3D.TextWidth(maxVal.ToString(tChart1.Axes.Custom[0].Labels.ValueFormat));

      tChart1.Panel.MarginUnits = PanelMarginUnits.Pixels;
      tChart1.Panel.MarginLeft = Utils.Round(width * 1.1);
    }

[acastro]

It doesn't run very well, is it possible to resize manually of the chart rectangle to get the same effect than automatically

[Christopher]

It doesn't run very well, is it possible to resize manually of the chart rectangle to get the same effect than automatically

In what sense does it not run very well? The code snippet runs as expected here.

And yes, you can manually resize the ChartRect with the following code:

Code: Select all

    private void InitializeChart()
    {
      tChart1.Series.Add(typeof(Line)).FillSampleValues();
      tChart1.Chart.CustomChartRect = true;
      tChart1.Chart.ChartRect = Utils.FromLTRB(100, 100, 300, 300); 
    }