gradient {calibrar}

Numerical computation of the gradient, with parallel capabilities

Description

This function calculates the gradient of a function, numerically, including the possibility of doing it in parallel.

Usage

gradient(fn, x, method, control, parallel, ...)

Arguments

fn

The function to calculate the gradient.

x

The value to compute the gradient at.

method

The method used. Currently implemented: central, backward, forward and Richardson. See details.

control

A list of control arguments.

parallel

Boolean, should numerical derivatives be calculated in parallel?

...

Additional arguments to be passed to fn.

Value

The gradient of fn at x.

Examples

gradient(fn=function(x) sum(x^3), x=0)