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Finding a point in the data set after which the slope of the line is approximately zero.

Mon, 02/13/2017 - 01:51 pm

Hi! I am having a real time data set and I need to find the point from which the slope is decreasing at a constant rate (i.e the data is at a very small angle with X axis) Can anyone help me to find that point. Please see the attached figure and the wave data set.

CO_22.txt

HJDrescher

I'd go with linear approximations of your data around the point of interest and calculate the intersection. I attached an old example using my data including the calculation (PDF). Maybe you need to fit to other functions (especially if you have an analytical description of your data) but at the end of the day it's down to calculate that crossing point.
HJ

Attachments PulseLength.pdf

February 14, 2017 at 11:50 pm - Permalink