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mandelbrot

Mandelbrot convergence counts

Description

Mandelbrot convergence counts

Usage

mandelbrot(...)

Arguments

Z

A complex matrix for which convergence counts should be calculated.
xmid, ymid, side, resolution

Alternative specification of the complex plane Z, where mean(Re(Z)) == xmid, mean(Im(Z)) == ymid, diff(range(Re(Z))) == side, diff(range(Im(Z))) == side, and dim(Z) == c(resolution, resolution).
maxIter

Maximum number of iterations per bin.
tau

A threshold; the radius when calling divergence (Mod(z) > tau).

Value

Returns an integer matrix (of class Mandelbrot) with non-negative counts.

Author(s)

The internal Mandelbrot algorithm was inspired by and adopted from similar GPL code of Martin Maechler available from ftp://stat.ethz.ch/U/maechler/R/ on 2005-02-18 (sic!).

Examples

counts <- mandelbrot(xmid = -0.75, ymid = 0, side = 3)
str(counts)
## Not run: 
plot(counts)

## End(Not run)

## Not run: 
demo("mandelbrot", package = "future", ask = FALSE)

## End(Not run)
future

Unified Parallel and Distributed Processing in R for Everyone

v1.21.0
LGPL (>= 2.1)
Authors
Henrik Bengtsson [aut, cre, cph]
Initial release

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