Description Usage Arguments Value Note Author(s) References Examples

Returns the numerical partial derivative of `y`

wrt `x`

for a point of interest.

1 |

`x` |
a numeric vector. |

`y` |
a numeric vector. |

`eval.point` |
numeric or ("overall"); |

`deriv.method` |
method of derivative estimation, options: ("NNS", "FD"); Determines the partial derivative from the coefficient of the NNS.reg output when |

Returns a list of both 1st and 2nd derivative:

`dy.dx(...)$First`

the 1st derivative.`dy.dx(...)$Second`

the 2nd derivative.

If a vector of derivatives is required, ensure `(deriv.method = "FD")`

.

Fred Viole, OVVO Financial Systems

Viole, F. and Nawrocki, D. (2013) "Nonlinear Nonparametric Statistics: Using Partial Moments" https://www.amazon.com/dp/1490523995/ref=cm_sw_su_dp

Vinod, H. and Viole, F. (2017) "Nonparametric Regression Using Clusters" https://link.springer.com/article/10.1007/s10614-017-9713-5

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