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DragPoint not extending outside of chart view after zooming
Posted: Wed May 06, 2009 6:56 pm
by 13052841
When not zoomed in, I am able to drag a point to the edges of the chart limit, and the chart will expand and move with my point.
For example, if my Y-axis was from 0 to 120 and I drag a point from 100 to 200, the chart would previously expand to 200.
However, when I am zoomed in, the chart does not expand automatically. Is there a setting I am missing or is this a known issue?
Thanks
Posted: Thu May 07, 2009 10:25 am
by 10050769
Hello LibDundas,
I recomend use similar code for next example:
InitializeChart:
Code: Select all
private void InitializeChart()
{
Steema.TeeChart.Styles.Line line1 = new Steema.TeeChart.Styles.Line(tChart1.Chart);
line1.Pointer.Visible = true;
Steema.TeeChart.Tools.DragPoint dgpoint = new Steema.TeeChart.Tools.DragPoint(tChart1.Chart);
line1.FillSampleValues();
dgpoint.Series = line1;
dgpoint.Drag += new Steema.TeeChart.Tools.DragPointEventHandler(dgpoint_Drag);
}
Code: Select all
void dgpoint_Drag(Steema.TeeChart.Tools.DragPoint sender, int index)
{
Steema.TeeChart.Styles.Series s = sender.Series;
double x = s.XValues[index];
double y = s.YValues[index];
if (x > s.GetHorizAxis.Maximum)
s.GetHorizAxis.Maximum = x;
if (x < s.GetHorizAxis.Minimum)
s.GetHorizAxis.Minimum = x;
if (y > s.GetVertAxis.Maximum)
s.GetVertAxis.Maximum = x;
if (y < s.GetVertAxis.Minimum)
s.GetVertAxis.Minimum = x;
}
I hope you will help
Thanks,
Posted: Thu May 07, 2009 2:18 pm
by 13052841
Thank you Sandra! I added in your suggestion and it worked as expected. Just 2 small typos that I corrected below to help any future readers of this post:
Drag Event:
if (x > s.GetHorizAxis.Maximum)
s.GetHorizAxis.Maximum = x;
if (x < s.GetHorizAxis.Minimum)
s.GetHorizAxis.Minimum = x;
if (y > s.GetVertAxis.Maximum)
s.GetVertAxis.Maximum = y;
if (y < s.GetVertAxis.Minimum)
s.GetVertAxis.Minimum = y;
Posted: Fri May 08, 2009 8:19 am
by 10050769
Hello LibDundas,
Thanks, I had not realized
.