Numberical Method to ID changing slope in poor data
Numberical Method to ID changing slope in poor data
(OP)
I have a set of data and overall it tells me what I want to know. However, there are areas in the curve that the data jumps up and down. My algorithm looks at the slope from point to point, and gets confused when the general trend is negative, but between two or three points it goes positive. In my data, I expect the slope to change several times from start to end, but numerically I can't figure out how to identify the trends vs. the localized slope changes. Any one have some ideas one numerically analyzing the data?
Thanks in advance.
Thanks in advance.





RE: Numberical Method to ID changing slope in poor data
Analyse the moving average instead of the individual data points.
FFT it, throw the high frequency stuff away, then IFFT it (may be more complex than that)
There are many solutions.
Cheers
Greg Locock
RE: Numberical Method to ID changing slope in poor data
RE: Numberical Method to ID changing slope in poor data
http://www.systat.com/products/TableCurve2D//
RE: Numberical Method to ID changing slope in poor data
m777182