How to adjust y-axis min/max after scroll/zoom

[ChristianH]

How are the y-axis min/max values automatically updated after a scroll/zoom. e.g. Setting LeftAxis.Automatic = True doesn't help.

[Yeray]

Hello,

You can use the Chart OnZoom event to modify the axis scale as you want.
Ie:

Code: Select all

uses Series;

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

  Chart1.AddSeries(TPointSeries).FillSampleValues();
end;

procedure TForm1.Chart1Zoom(Sender: TObject);
begin
  with Chart1.Axes.Left do
    SetMinMax(Minimum-5, Maximum+5);
end;