Description Arguments Details Value Author(s)

View source: R/finite_differences.R

Estimates first-order derivatives of column vectors of a matrix

`xs` |
Raw data to be differentiated (matrix) |

`S` |
Sample rate of data to return derivatives using raw time |

Uses simplest version of finite-difference method (window size 2) to numerically estimate derivative of multiple columnar time series.

Returns first-order numerical derivatives estimated from data.

Rick Dale and Harish S. Bhat

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