How to Display time variation between two CursorTools

vijay · Post by **vijay** » Fri Sep 19, 2008 10:09 am

Hello,

Is there any way to get the time span between two Vertical CursorTools.
Do do i need to make use of the DrawlineTool for such kind of support.

Thanks,
Vijaylal.

Narcís · Post by **Narcís** » Fri Sep 19, 2008 10:35 am

Hi Vijaylal,

Yes, you can do something like this:

Code: Select all

			TimeSpan timeDifference = DateTime.FromOADate(cursor1.XValue) - DateTime.FromOADate(cursor2.XValue);
			int total = (timeDifference.Seconds * 1000) + timeDifference.Milliseconds;

			label1.Text = "Difference: " + total.ToString() + " ms";

vijay · Post by **vijay** » Fri Sep 19, 2008 11:20 am

Hello Narcís, thanks for your quick response.

Actually what required is to display that time difference by drawing a line between those CursorTools.

like this.., |-----------Value--------|.

Thanks,
Vijaylal.

Narcís · Post by **Narcís** » Fri Sep 19, 2008 11:46 am

Hi Vijaylal,

You can use a line series for that, for example:

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			Steema.TeeChart.Styles.Line line1 = new Steema.TeeChart.Styles.Line(tChart1.Chart);

			double midPoint = tChart1.Axes.Left.Minimum + (tChart1.Axes.Left.Maximum - tChart1.Axes.Left.Minimum) / 2;
			line1.Add(cursor1.XValue, midPoint);
			line1.Add(cursor2.XValue, midPoint);

vijay · Post by **vijay** » Mon Sep 22, 2008 4:37 am

Thanks Narcís.
This works fine. But i found some difficulties in using a line between two vertical cursorTools.
1.I cannot reposition it.
2.I Cant apply Dash style etc...

Is there any way to place a horizontal CursorTool between those vertical cursortools ?. So that i could drag and reposition it to display 'y' value variations.

Thanks,
Vijay.

Narcís · Post by **Narcís** » Mon Sep 22, 2008 10:48 am

Hi Vijay,

1.I cannot reposition it.

You could repopulate line series every time cursor's Change event is fired. However, I recommend you to do something as in the All Features\Welcome !\Chart styles\Standard\Line(Strip)\Interpolating line series example at the features demo available at TeeChar'ts program group. Instead of drawing circles you could draw a line from one cursor position to the other.

2.I Cant apply Dash style etc...

Yes, this possible with line series:

Code: Select all

			line1.LinePen.Style = System.Drawing.Drawing2D.DashStyle.Dash;

Anyway, you can do the same with canvas' pen.

Is there any way to place a horizontal CursorTool between those vertical cursortools ?. So that i could drag and reposition it to display 'y' value variations.

Yes, you could do that following the same principles in the example I pointed you.