zoom: Zoom into the Mandelbrot set

In mariodosreis/fractal: Fractal

Zoom into the Mandelbrot set

Description

Selects a region of a fractal image and zooms into it.

Usage

zoom(
  col = c(heat.colors(49), "black"),
  fun = "mandelbrot",
  mu,
  nx = 600,
  ny = 600,
  iter = NULL,
  plot = TRUE,
  invisible = TRUE
)

Arguments

col	the color palette to plot the set
fun	which fractal function to plot, currently only the Mandelbrot
mu	parameter from the Julia set (not used)
nx	number of subdivisions in the x-axis (for plotting)
ny	number of subdivisions in the y-axis (for plotting)
iter	number of iterations to calculate the set
plot	whether to plot the zoomed-in area
invisible	whether to return a matrix with the calculated iterations

Details

Currently the function only zooms into the Mandelbrot set. The set should be plotted with the image function. Then, a call to zoom uses locator to read the coordinates of two points on the image, selected by the user using the mouse.

It is recommended that you increase the number of iterations as you zoom into the boundary areas of the set.

Examples

## Not run: 
z <- mandelbrot()
# The set is black
cols <- c(hcl.colors(n=100, pal="Lisbon"), "black")
image(z, col=cols, las=1)
points(c(-.375,.125), c(.5, 1), pch=19, col="orange")

# Run the zoom command below, then use your mouse to click on
# the two orange dots on the image
zoom(col=cols, iter=100)
# now try to zoom in deeply by clicking on two arbitrary points
# around a region of interest

## End(Not run)

mariodosreis/fractal documentation built on March 19, 2024, 3:28 p.m.