May 26, 1997: Land of Loti | May 25 | May 27 | 1997 | FOTD Home |
Fractal
visionaries:
Today's fractal picture is a gentle yet striking one created by doing
things a little differently with Newton's method. I've named
it
Lotus because it reminds me of a patch of lotus blossoms.
As a rule, I find the Newton's formulas quite productive, since there
is no end to the different ways they can be calculated, and the results
are always unpredictable. Certain terms in these formulas are
unusually sensitive, and if they are changed even slightly, the entire
appearance of the resulting fractal will be changed. Even
when
the parameters are so far off that
a blank screen results, an interesting image can usually be found by
trying various fill options.
Adding variable parameters to simple formulas is one of my favorite
ways of finding new images in my test formulas. Instead of
writing say, (Z*(Z-1))^2, I might write X*((Z*(Z-Y))^W), which gives me
the three variables, X, Y, and W to play with.
One problem with having 10 variables, as I sometimes do though, is that
when I find a good fractal, if I don't make an immediate record of the
parameters, I lose the fractal and never find it again. When
I
find values that work particularly well, I make
them a hard coded part of the formula and thereby eliminate many
of the variables.
I've seen remarks recently that Fractint can't recognize the color part
of the parameter files. This is most likely
because the the color code is being broken up into fragmentary lines by
the online software. To avoid the problem, be sure that the
parameter file is saved as ascii text, and that every line in the color
section of the parameter file ends with a backslash < \
>.
This indicates to Fractint that the next
line is a direct continuation of the previous line.
Tomorrow's fractal will be a cosmically grand one, also created by a
variation of Newton's method.
Jim Muth
jamth@mindspring.com
START PARAMETER FILE FOR 19.6===================================
Land_of_Loti
{ ; time=0:00:33.18-SF5 on P4-2000
reset=1960 type=formula formulafile=basicer.frm
formulaname=NewtonTest27 passes=1
center-mag=1.4623/0/0.3582555/1/-90/0
params=-1/3/3/1/1/1e-005 float=y maxiter=90
inside=bof60 logmap=yes periodicity=0
colors=000hKmhKjhKghKdlR_pYVtdQxkMH1tIEvK0pK0oOArS\
IrWPr_XrccrgkzzzzrrreljcjX`gPZeIWbBU`4QWHMRTIMeFIq\
MOgSUZY_PcdG_aEW_CSYAPW8LT6HR4DP2AN0DhzGetIcsKakN_\
lPYmRWnYTpcQqjNrpKsvItz_Wmp8zo2sn7mnCdnHVmMKmRDmW6\
m`JbgVTmfIsr8yJNmQP3NUBKZJHcREgYBle8qm6utBslFreKqZ\
OoRTnKXmDVkCUiCThBSfBQdBPcAOaAN`ALb9Jd8If7Gh6Ej5Dl\
4Bn3Ap2Ii4Pc6WY8cRAjLCqFErEDsECqFDoGEmHFkHGiIHgJIe\
KJdKKbLL`MMZNNXNOVOPTPQRQRQQS_ObhNlgOjgPhgQgabIfRe\
fScfTbeT`eUZeVYdWWdXVdYTcYRcZQc_Ob`MbaLbbJ52oA7jEC\
fIGbMLZRQUVUQZZM7aoFbfNbZVbQr0Aq3Bp5Bo8CnACmDDlFDk\
IEjKEiMFhPFgRGfUGeWHdZHc`I2t37r5Bp7Fn8JlANjCRhDVfF\
ZdHUYpVZnVZlWZkWZiX_gX_fX_dY_bY`aZ`_Z`Y_`X_aV_aT`a\
S`aQabOabNbbLbbJ6HaCLYHPVNSSSWOY_L5`_7aZ9aYBaXDaWE\
aVGaUIaTKaSMaRNbQPbPRbOTbNVbMWbLYbK_bJabIwryuqvtps\
sopqnnpmkolhmkeljcki`ihYhgVgfTeeQddNccKiewgdnfcfdc\
YcbQfX4eY5eY6eY7eZ7`QlhLq }
frm:NewtonTest27 {; Jim Muth
a=real(p1), b=imag(p1), c=real(p2),
d=imag(p2), k=real(p3), f=imag(p3),
z=(pixel):
zx=(z^b)-a
zy=(c*z)^d
z=z-(k*zx/zy),
|zx| >= f }
END PARAMETER FILE FOR 19.6=====================================