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Find local minima and maxima
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| install.packages("quantmod") | |
| library("quantmod") | |
| x <- seq(0, 2*pi, 0.1) | |
| y <- sin(x) | |
| y[findPeaks(y)] | |
| # [1] 0.9916648 | |
| y[findPeaks(-y)] | |
| # [1] -0.9961646 |
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