DrawZone: Wrong Radius

[to2]

Hello,

I use DrawZone in a polar chart. However, the drawn radius of the zone doesn't match the radius on the axis scale. Please find attached an example.

- Win 7, 32 Bit
- CB2010
- TC 8.08

Thomas

[Narcís]

Hi to2,

If I create a new application from scratch with code below it works fine for me. So I guess It must be something you set at designtime.

Code: Select all

void __fastcall TForm1::FormCreate(TObject *Sender)
{
	Chart1->Axes->Left->SetMinMax(0, 10);
	Series1->AddPolar(0, 0, "", clTeeColor);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Series1BeforeDrawValues(TObject *Sender)
{
	Series1->DrawZone(0, 5, 0);
}

After testing with the properties in the *.dfm file I found that what makes a difference is CircleLabels property. Setting it to false works fine:

Code: Select all

 Series1->CircleLabels=False;

Anyway, I have added the defect to the bug list (TV52015474) to be fixed for future releases.

[to2]

After testing with the properties in the *.dfm file I found that what makes a difference is CircleLabels property. Setting it to false works fine

Well, I need the labels.

Anyway, I have added the defect to the bug list (TV52015474) to be fixed for future releases.

I would appreciate a fix in a 8.x maintenance release.

Thanks for your investigations. I'll realize zone drawing by an extra series.

Thomas

[Narcís]

Hi Thomas,

Well, I need the labels.

In that case an alternative is using TChart's OnBeforeDrawAxes event and calling Draw method as shown here:

Code: Select all

void __fastcall TForm1::FormCreate(TObject *Sender)
{

  Chart1->Axes->Left->SetMinMax(0, 10);
  Series1->AddPolar(0, 0, "", clTeeColor);
  Series1->CircleLabels=True;
  Chart1->Draw();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Chart1BeforeDrawAxes(TObject *Sender)
{
  Series1->DrawZone(0, 5, 0);
}

I would appreciate a fix in a 8.x maintenance release.

This is unlikely. TeeChart 2010 VCL (aka v9) was published almost one year ago and there are no plans to publish another v8 maintenance.