Dynamic chart jiggles up and down a little

Terry · Post by **Terry** » Wed Aug 10, 2005 9:23 pm

Hi,

I am using a FastLine series to implement a spectrum trace that updates 4 times a second. Actually works pretty well (I have annotations used for markers updating on every trace update). I have turned off autoscale for X and Y control it programatically.

The trace and Y-axis seems to scroll up or down a little whenever the trace is updated. Kinda makes the chart look like it is jigglings up and down.

Has anyone seen this? Do you have an idea how to stop it?

Terry

Miguel · Post by **Miguel** » Thu Aug 11, 2005 8:34 am

Hi Terry,

Have you set the Min/Max values of the left axis with a spread wide enough so that all y values are inside?

Code: Select all

tChart1.Axes.Left.SetMinMax(min,max);

If this does not resolve your problem, please send an example of your code.

Terry · Post by **Terry** » Thu Aug 11, 2005 4:57 pm

Hi, Thanks for the response.

Your response made me look closely at my autoscale algorythm. It was changing the min and max slightly sometimes.

Sorry for the false alarm.

Terry