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Fractal of the Day
by Jim Muth
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Fractal visionaries and enthusiasts: We'll have another short discussion today, since I lack both the time and inspiration for a lot of fancy words. The formula behind the image is Z^(-14)+2.5Z^(-1.4)+(1/C). This expression was calculated by the faithful MandelbrotMix4 formula, which never lets me down when I need a fractal in a hurry and have little patience for a rigorous search. I named the picture "Old Gold Minibrot" after the gold filaments intricately weaved around the central midget, and rated it an adequate 4. The parameter file renders in 2-1/2 minutes, not too slow, but still slow enough to make a download of the GIF image file from: The fractal weather was near perfect today, with bright sunlight and a temperature of 60F (15.5C), which so pleased the fractal cats that they spent the afternoon sleeping on the porch. That's it for tonight, until tomorrow, take care, and see you then. Jim Muth jamth@mindspring.com |
START 20.0 PAR-FORMULA FILE================================
Old_Gold_Minibrot { ; time=0:02:38.03 -- SF5 on a P200
reset=2001 type=formula formulafile=critical.frm
formulaname=MandelbrotMix4 function=recip passes=1
center-mag=-1.99346404717843900/+2.37985402910731000\
/1843237/1/160 params=1/-14/2.5/-1.45/0/0 float=y
maxiter=1200 inside=0 logmap=43 periodicity=10
colors=000jAY<3>gAVfAUe9Tb8S_7R<2>R4KO3IL3HN9GF7BQJF\
SIFcUO<2>riNwnMzsMwpK<3>chCZfAUd8<2>Fm2Jc5PV7UM9<3>o\
5I<9>`9P_APYAQ<3>TBS<3>DRN9VM5ZL1aK<4>IgaMiePjh<3>an\
v<4>`qp`ro`rn<3>_ui_vh_wg_xf_ye<3>WzNVzIUzETz9Tz5<3>\
IzHGzKDzNBzPLzFVz6hz6<3>jzt<2>0zX`zRkzPuzNYzYBzh<2>L\
zM<3>5zn2zu9zh<2>Tz9<2>yzO<3>Bzg<3>jzwszzkznczcXzT\
<3>mzUqzUizZ<3>Ezr<3>IzxJzyMzy<3>WzyYzyRznLzd4z2<3>5\
zPPzRhzTczY_zaWwf<2>JhsTcnacijcduiNrcK<3>PcCIcABc8\
<3>_cbecjkcrqcy<3>fcbccXacSZzMWzGUzBEzo<3>NzSPzNHzhE\
zg<3>VzeZzeYzf<8>XzkXzlXzl<2>XznXznVzl<3>OzgMzfKzdIz\
cHzb<3>MzedzGizPmzX
}
frm:MandelbrotMix4 {; Jim Muth
a=real(p1), b=imag(p1), d=real(p2), f=imag(p2),
g=1/f, h=1/d, j=1/(f-b), z=(-a*b*g*h)^j,
k=real(p3)+1, l=imag(p3)+100, c=fn1(pixel):
z=k*((a*(z^b))+(d*(z^f)))+c,
|z| < l
}
END 20.0 PAR-FORMULA FILE==================================
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times.
