analyzing data and charts

[Ramsgt]

Dear All,

I wantr the analyze the data and to find the poin of value where the graph takes a deviation. it may be flat for few fraction of seconds or it may be a dip and rise in the curve or it may be small deflection and its remain same.

Help me out of this.

[GregFreeman]

I'm entirely sure this is not the best way but could you take derivatives of the line in small step sizes? Look for an obvious change in the slope of the line. Also, you need to define what the change is you are looking for more clearly. If there are an infinite number of possibilities, it's tough. It is easy for the human eye to look at something and say "hey, that's the obvious change" but telling a computer what to look for is a bit of a different story.

[Ramsgt]

Thanks for the quick reply.

Here i can't deside how the wave form behaves. So i have to look for more options. So please let me know wat are all the ways to find the change in the curve.

thanks