iterate: Perform a point iteration

In pdmetcalfe/extrapolatr: Convergence Acceleration

Description

Run a point iteration, saving intermediate values. This is a convenient building block for convergence acceleration.

Usage

iterate(x, f, n, save = TRUE, ...)

Arguments

x	the start value of the iteration (not saved)
f	the function that performs the iteration
n	the number of iterations to do
save	do we save the iteration history?
...	extra arguments for f

Value

the output of the iteration. If save is TRUE, it has an attribute 'history', which gives the iteration history as a length(x) x n matrix.

Examples

iterate(0.2, cos, 100, save=FALSE)
iterate(c(-1, 1), function(x) { - x }, 100)

pdmetcalfe/extrapolatr documentation built on June 12, 2021, 8:09 p.m.