Steema Central

JMX Services wrote:I have a problem with T-Chart 2010 on zooming with multiple Y axes. When I zoom, it zooms all the waveforms to a common y-axis. I loose the various scalings on the independent axes. I can turn off vertical zooming and the horizontal zooming works correctly for my single x-axis, but I would like to be able to zoom the same way I could with the RAD Studio 2007 version of the TChart component. Is there a setting to enable this?

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

  for i:=0 to 3 do
  begin
    Chart1.AddSeries(TFastLineSeries);
    Chart1[i].FillSampleValues();
    Chart1.CustomAxes.Add;
    Chart1[i].CustomVertAxis:=Chart1.CustomAxes[i];
  end;
end;

procedure TForm1.Chart1UndoZoom(Sender: TObject);
var i: Integer;
begin
  for i:=0 to Chart1.CustomAxes.Count-1 do
    with Chart1.CustomAxes[i] do Automatic:=true;
end;

procedure TForm1.Chart1Zoom(Sender: TObject);
var i: Integer;
begin
  for i:=0 to Chart1.CustomAxes.Count-1 do
    with Chart1.CustomAxes[i] do SetMinMax(CalcPosPoint(Chart1.Zoom.Y1),CalcPosPoint(Chart1.Zoom.Y0));
end;

JMX Services wrote:As I am upgrading to 2010, I have had to copy and pastes the charts in my applications to get the projects to compile without errors.

JMX Services wrote:Has this copy and paste changed the default zoom settings. It did add a gradient to my panel backgrounds that I had to remove. Is there a bug here?