Steema Central

Posted: **Fri Jun 13, 2014 1:31 pm**

Examine the following image: Just a TLineSeries (orange border) with some null values in between. I added a region tool. It fills the region from start to finish, as if there are no null values.

: tseriesregiontool.png (14.62 KiB) Viewed 5524 times

Is there anything I could do about it?

I guess I'll probably have to look for "holes" myself and add a single region tool for each single line.

Posted: **Fri Jun 13, 2014 2:43 pm**

Hello Jens,

jens.mertelmeyer wrote:I guess I'll probably have to look for "holes" myself and add a single region tool for each single line.

Yes, this would be an option.

I can also think on simply using a TAreaSeries with null points instead of a TLineSeries with a TSeriesRegionTool. Ie:

Code: Select all

procedure TForm1.FormCreate(Sender: TObject);
begin
  Chart1.View3D:=false;

  with Chart1.AddSeries(TAreaSeries) as TAreaSeries do
  begin
    Color:=RGB(128, 128, 255);
    Pen.Color:=RGB(255, 128,0);
    Pen.Width:=3;
    AreaLinesPen.Visible:=false;
    Transparency:=50;

    FillSampleValues(15);
    SetNull(4);
    SetNull(5);
    SetNull(6);
  end;
end;

: area.png (20.23 KiB) Viewed 5516 times

Steema Central

TSeriesRegionTool and a series with null values

TSeriesRegionTool and a series with null values

Re: TSeriesRegionTool and a series with null values