Series Chart color and Legend Chart color.

[MVBobj]

If I set the series color manually, how do I set the associated color in the little box in the legend to the same color?

[Narcís]

Hello,

I'm not sure about which is your exact problem. If I run the code snippet below bar's legend symbol becomes red. Can you please attach a simple example project we can run "as-is" to reproduce the problem here?

Code: Select all

uses Series;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Chart1.AddSeries(TBarSeries.Create(Self)).FillSampleValues;
  Chart1[0].Color:=clRed;
end;

Thanks in advance.

[MVBobj]

Enclosed is a simple project. DelphiXE7 Win7Pro64Bit

In your FormCreate, the chart hasn't displayed yet.

In my project - the chart and legend with legend colors are visible and when you click Button1, the 3 series are loaded, their colors set and displayed and the legend colors remain as they were on startup!

How do I reset the legend colors?

[Narcís]

Hello,

Your code is setting specific point color but not the general color for the series. You should use TChartSeries.Color property instead:

Code: Select all

procedure TForm2.Button1Click(Sender: TObject);
var
  clrBar1, clrBar2, clrBar3: TColor;
begin
  clrBar1 := clWebLightCyan;
  clrBar2 := clWebLightSteelBlue;
  clrBar3 := clWebLemonChiffon;

  Chart[0].Color:=clrBar1;
  Chart[0].Add(7, '01/04/2004', clrBar1);
  Chart[0].Add(17,'01/11/2004', clrBar1);
  Chart[0].Add(6, '01/18/2004', clrBar1);
  Chart[0].Add(12,'01/25/2004', clrBar1);
  Chart[0].Add(5, '02/01/2004', clrBar1);
  Chart[0].Add(7, '02/08/2004', clrBar1);
  Chart[0].Add(14,'02/15/2004', clrBar1);
  Chart[0].Add(4, '02/22/2004', clrBar1);
  Chart[0].Add(12,'03/01/2004', clrBar1);
  Chart[0].Add(9, '03/08/2004', clrBar1);
  Chart[0].Add(17,'03/15/2004', clrBar1);
  Chart[0].Add(2, '03/22/2004', clrBar1);
  Chart[0].Add(5, '03/29/2004', clrBar1);
  Chart[0].Add(10,'04/06/2004', clrBar1);
  Chart[0].Add(6, '04/13/2004', clrBar1);

  Chart[1].Color:=clrBar2;
  Chart[1].Add(17, '01/04/2004', clrBar2);
  Chart[1].Add(27,'01/11/2004', clrBar2);
  Chart[1].Add(16, '01/18/2004', clrBar2);
  Chart[1].Add(22,'01/25/2004', clrBar2);
  Chart[1].Add(15, '02/01/2004', clrBar2);
  Chart[1].Add(17, '02/08/2004', clrBar2);
  Chart[1].Add(24,'02/15/2004', clrBar2);
  Chart[1].Add(14, '02/22/2004', clrBar2);
  Chart[1].Add(22,'03/01/2004', clrBar2);
  Chart[1].Add(19, '03/08/2004', clrBar2);
  Chart[1].Add(27,'03/15/2004', clrBar2);
  Chart[1].Add(12, '03/22/2004', clrBar2);
  Chart[1].Add(15, '03/29/2004', clrBar2);
  Chart[1].Add(20,'04/06/2004', clrBar2);
  Chart[1].Add(16, '04/13/2004', clrBar2);

  Chart[2].Color:=clrBar3;
  Chart[2].Add(27, '01/04/2004', clrBar3);
  Chart[2].Add(37,'01/11/2004', clrBar3);
  Chart[2].Add(26, '01/18/2004', clrBar3);
  Chart[2].Add(32,'01/25/2004', clrBar3);
  Chart[2].Add(25, '02/01/2004', clrBar3);
  Chart[2].Add(27, '02/08/2004', clrBar3);
  Chart[2].Add(34,'02/15/2004', clrBar3);
  Chart[2].Add(24, '02/22/2004', clrBar3);
  Chart[2].Add(32,'03/01/2004', clrBar3);
  Chart[2].Add(29, '03/08/2004', clrBar3);
  Chart[2].Add(37,'03/15/2004', clrBar3);
  Chart[2].Add(22, '03/22/2004', clrBar3);
  Chart[2].Add(25, '03/29/2004', clrBar3);
  Chart[2].Add(30,'04/06/2004', clrBar3);
  Chart[2].Add(26, '04/13/2004', clrBar3);

end;

Actually, you could even remove color setting for each point:

Code: Select all

procedure TForm2.Button1Click(Sender: TObject);
begin
  Chart[0].Color := clWebLightCyan;
  Chart[1].Color := clWebLightSteelBlue;
  Chart[2].Color := clWebLemonChiffon;

  Chart[0].Add(7, '01/04/2004');
  Chart[0].Add(17,'01/11/2004');
  Chart[0].Add(6, '01/18/2004');
  Chart[0].Add(12,'01/25/2004');
  Chart[0].Add(5, '02/01/2004');
  Chart[0].Add(7, '02/08/2004');
  Chart[0].Add(14,'02/15/2004');
  Chart[0].Add(4, '02/22/2004');
  Chart[0].Add(12,'03/01/2004');
  Chart[0].Add(9, '03/08/2004');
  Chart[0].Add(17,'03/15/2004');
  Chart[0].Add(2, '03/22/2004');
  Chart[0].Add(5, '03/29/2004');
  Chart[0].Add(10,'04/06/2004');
  Chart[0].Add(6, '04/13/2004');

  Chart[1].Add(17, '01/04/2004');
  Chart[1].Add(27,'01/11/2004');
  Chart[1].Add(16, '01/18/2004');
  Chart[1].Add(22,'01/25/2004');
  Chart[1].Add(15, '02/01/2004');
  Chart[1].Add(17, '02/08/2004');
  Chart[1].Add(24,'02/15/2004');
  Chart[1].Add(14, '02/22/2004');
  Chart[1].Add(22,'03/01/2004');
  Chart[1].Add(19, '03/08/2004');
  Chart[1].Add(27,'03/15/2004');
  Chart[1].Add(12, '03/22/2004');
  Chart[1].Add(15, '03/29/2004');
  Chart[1].Add(20,'04/06/2004');
  Chart[1].Add(16, '04/13/2004');

  Chart[2].Add(27, '01/04/2004');
  Chart[2].Add(37,'01/11/2004');
  Chart[2].Add(26, '01/18/2004');
  Chart[2].Add(32,'01/25/2004');
  Chart[2].Add(25, '02/01/2004');
  Chart[2].Add(27, '02/08/2004');
  Chart[2].Add(34,'02/15/2004');
  Chart[2].Add(24, '02/22/2004');
  Chart[2].Add(32,'03/01/2004');
  Chart[2].Add(29, '03/08/2004');
  Chart[2].Add(37,'03/15/2004');
  Chart[2].Add(22, '03/22/2004');
  Chart[2].Add(25, '03/29/2004');
  Chart[2].Add(30,'04/06/2004');
  Chart[2].Add(26, '04/13/2004');
end;

[MVBobj]

Excellent!

Thank you.

[emwamin]

Hi

This solution does not work for me. Not only that the legend does not have correct text color, it is not possible to change it with the Toolbox. I am using ErrorBar serie.
I am using Tee Chart Pro v2015.14.150120. I have to add that this error introduced in the latest release. I have not changes my coding after updating the Tee Chart.

Code: Select all

Procedure myProcedure;
var
   MySeries: TErrorBarSeries;
  CL: TColor;
Begin
...
...
   CL := clRed;
...
Chart1.FreeAllSeries(nil);
Chart1.Legend.Visible := true;
Chart1.Legend.FontSeriesColor := true;
Chart1.Legend.LegendStyle := LsSeries;
...
MySeries := TErrorBarSeries.Create( Self );
Chart1.AddSeries( MySeries );
MySeries.ParentChart := Chart1;
MySeries.Title := 'myTitle';
MySeries.Color := CL;
MySeries.ErrorStyle := essTopBottom;
...
MySeries.AddErrorBar(indx,valAverage,valSEM,'Text1',CL);
...

end;

Here are the images from the previous version and the new version of Tee chart:

errorbarPlot-Old.jpg (19.78 KiB) Viewed 15502 times

errorbarPlot-New.jpg (22.65 KiB) Viewed 15512 times

As you can see "Early" and "Late" do not have the same color as the bars.

Please adivise how to solve this issue.

BR
emwamin

[Yeray]

Hello,

Give it a try at the latest version, v2015.16. I could reproduce the problem with v2015.14 but not with the latest version.

[emwamin]

Hi

I have upgraded to v2015.16 and can confirm that the problem is solved.
Thanks a lot.

BR
emwamin