Ruffled Gnarls

Gnarls with a distinct ruffled texture.

Created using mars and expanded using phobos (see my deviantID).

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Parameters

Formula: PP Mandelbrot

z_r = z_r - alpha_r*sin(z_i + tan(beta_r*z_i)) + c_r
z_i = z_i - alpha_i*sin(z_r + tan(beta_i*z_r)) + c_i

The suffixes _r and _i mean the real part of the variable and the imaginary part of the variable.

alpha = 0.15 + 0.15i
beta = 0.4 + 0.4i
c is the location in the complex plane and has been transformed using the power -1 i.e. it has been inverted.
The initial value of z is the untransformed value of c.

Bailout limit: 190
Iterations to completion: 380 approx.
Image centre: 7.302645 - 7.13684i
Long side: 6.096094
Rotation about image centre: 270 degrees

Colouring: absolute log of Change of Magnitude, coefficient of variation.