Fill area between 2 series

[johnnix]

Hello,

I believe this question was asked many years ago but I could not retrieve anything from Search.

I need to fill the area between 2 series (e.g. Series1 and Series2) with a constraint that fill will apply only when Series1 values are smaller than Series 2 (see attached image), I tried using the available TChart tools but with no luck, any help would be mostly appreciated

Regards

[Yeray]

Hello,

Check the Series Band Tool. I've just run the "All features\Welcome !\Tools\Series Band" example in the New Features demo, changed the series from Line series to HorizLine series and reassigned the second series for the tool:

Tee9new_2019-04-08_13-23-26.png (177.39 KiB) Viewed 17982 times

[johnnix]

Hello,

I tried that, had to change both line series to Horizontal type however the result is not good.

Regards

[Yeray]

Hello,

Please, arrange a simple example project we can run as-is to reproduce the problem here.
Thanks in advance.

[johnnix]

Here is a sample app

[Yeray]

Hello,

I could reproduce the problem so I've added it tot he public tracker: #2182.

Note I've already fixed it.
The fix consists on modifying the TryAddCrossPoint function in TeeSeriesBandTool.pas, from this:

Code: Select all

  function TryAddCrossPoint(t:Integer; isStairs,isStairs2:Boolean):Boolean;
  //...

    if result then
       AddPointXY(Series.CalcXPosValue(X),Series.CalcYPosValue(Y))
    end
    else
    if IsStairs then
       AddPoint(Series,IsStairs,t);
  end;

To this:

Code: Select all

  function TryAddCrossPoint(t:Integer; isStairs,isStairs2:Boolean):Boolean;
  //...

    if result then
    begin
      if Series.YMandatory then
         AddPointXY(Series.CalcXPosValue(X),Series.CalcYPosValue(Y))
      else
         AddPointXY(Series.CalcXPosValue(Y),Series.CalcYPosValue(X));
    end
    else
    if IsStairs then
       AddPoint(Series,IsStairs,t);
  end;

[johnnix]

Hello,

Thank you, will give it a try

Regards