Find slope signal change
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Hello, I have this graph and I want to find out when does the slope changes from negative to positive around index ~100, for each group (younger and older), using polyfit.
Each line in the plot is a matrix column (ignore the shaded area, that's the standard error of the mean).
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KSSV
le 12 Août 2020
mathworks.com/matlabcentral/answers/168517-how-can-i-find-slope-sign-change-of-a-signal
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