Change Series at Runtime

[kev]

Is there a way to change a FastLine Series into a LineSeries and back at runtime? I can do this executing the ChartEditor at runtime and it works fine. I would like to just make a user checked option for this. Why do I want to do this? Because I am doing high speed multichannel Data Acquisition which works very well using FastLine. However, I would like to see my sample density after the chart has been populated. This can be seen perfectly with Series Points turned on which is not available in FastLine. It seems to me that if I can do this through the ChartEditor, I should be able to do it programatically.

Thanks,
Kev

[Narcís]

Hi Kev,

Yes, you can do that using something like:

Code: Select all

procedure TForm1.Button1Click(Sender: TObject);
var tmp: TChartSeries;
begin
  tmp := Chart1[0];
  ChangeSeriesType(tmp,TFastLineSeries);
end;

[kev]

Yes I saw that, but...

I am using TChart 7Pro for Builder 6. I saw a couple of examples on the newsgroups, but they are for Delphi and I so far have not been able to figure out how to convert to C++.

thanks,
Kev

[kev]

Anyone want to take a stab at this one? See the previous post.

thanks,
kev

[Pep]

Hi Kev,

you can do :

Code: Select all

TChartSeries *ser;
ser = Series1;
ChangeSeriesType(ser,__classid(TPointSeries));

[kev]

I must have tried every other "cast" besides that one. It works fine.

Thanks,
Kev