Page 1 of 1
TCursortool.Yvalue
Posted: Sat Apr 28, 2007 9:09 am
by 9241087
Hello,
I can read out the vertical position of a horizontal Cursortool by
in scales of the axis.
But which axis does this refer to if I have more then one?
In my example I normally have a left and a right vertical axis and I want to read out both YValues of my horizontal Cursor tool.
How can I do this?
Greetings,
Heiko
Posted: Mon Apr 30, 2007 8:14 am
by yeray
Hi Heiko,
Here's an example of how you can show Y values from both left and right axis using OnMouse event instead of Cursor Tool.
Code: Select all
procedure TForm1.Chart1MouseMove(Sender: TObject; Shift: TShiftState; X,
Y: Integer);
begin
Chart1.Title.Caption := 'LeftAxis Y: ' + floattostr(Chart1.Axes.Left.CalcPosPoint(Y)) + ' RightAxis Y: ' + floattostr(Chart1.Axes.Right.CalcPosPoint(Y));
end;
Difference between two CursorTools
Posted: Sat May 12, 2007 8:14 am
by 9241087
Thanks for the answer. But I think this doesn't help me?
I want (as an example) to get the difference between two horizontal CursorTools. Both in measures of the left and right axis.
This, whenever I move one of the two CursorTools.
For the left axis this is no problem:
But what do I have to do with my right axis?
Heiko
Posted: Mon May 14, 2007 9:31 am
by yeray
If you want the difference between the YValues from Cursor Tools associated to different series (associated to different axes) you can simply calculate it but that'll be a difference between values from different scales.
You can also calculate the YValue of a cursor tool for another axis (not associated) like this:
Code: Select all
Chart1.Title.Caption := 'RightAxis Y: ' + floattostr(Chart1.Axes.Right.CalcPosPoint(Chart1.Axes.Left.CalcYPosValue(Cursor1.YValue)));