Chart and colors?

Comments

• rene Prague, Czech Republic, Europe

  January 2007 edited 12:07AM

  rene wrote:

  I would like to know how to change the default color used in pie charts.

  OK, no answer - nevermind.
  my solution is in change of definition of object "TfrxPieSeriesHelper" in standard unit "frxChartHelpers" (OK, this is not the best solution, but it works) this way (mind the +/- rm tags):

  { TfrxPieSeriesHelper }
  
  procedure TfrxPieSeriesHelper.AddValues(Series: TChartSeries; const v1, v2,
    v3, v4, v5, v6: String; XType: TfrxSeriesXType);
  var
    d: Double;
    c: TColor; // + rm 11.01.2007
  begin
    if Series.YValues.DateTime then
      d := StrToDateTime(v2)
    else
      d := frxStrToFloat(v2);
  //  Series.Add(d, v1, clTeeColor); // - rm 11.01.2007
  
    // + rm 11.01.2007
    c := clTeeColor;
    if v2 <> '' then
    try
      c := StringToColor(v3);
    except
     ; // nothing
    end;
  
    Series.Add(d, v1, c);
  end;
  
  function TfrxPieSeriesHelper.GetParamNames: String;
  begin
  //  Result := 'Label;Pie'; // - rm 11.01.2007
    Result := 'Label;Pie;Color (optional)'; // + rm 11.01.2007
  end;
  

  
  In my opinion is it very simple and usefull change with no harm to standard code of FR3.
  
  Enjoy it,
  Rene
  
  PS: If FR team consider to use it in next release/update of FR3, it will be great. (At least I will avoid some merging problems during upgrades.)