From an alternative cubic formula. Unlike most of my other contributions this is a non-purist image. A filter routine is used. The formula (a modification of “cubic parameterspace3”) is included in my ik3 formula folder included in a zip, which can be downloaded from [link]

Below the parameter file. Play and have fun

Pedestal3 {
fractal:
title="Pedestal3" width=640 height=480 layers=2
credits="Ingvar Kullberg;5/7/2007"
layer:
method=multipass caption="M-" opacity=100 mergemode=difference
mapping:
center=0/2.125 magn=2.42424242424242424
formula:
maxiter=1000 filename="ik3.ufm" entry="SorensenCubic3"
p_PlottedPlane="1.(a-real,a-imag)" p_M=M- p_SetBorders=no p_hide=yes
p_areal=0.0 p_aimag=0.0 p_breal=0.0 p_bimag=0.0 p_xrot=0.0
p_yrot=0.0 p_xrott=0.0 p_yrott=0.0 p_zrot=0.0 p_LocalRot=no
p_diff=no p_bailout=100.0 p_dbailout=1E-6
inside:
transfer=linear filename="sp.ucl" entry="Funcs" p_itrap=0.0/1.0
p_solid=yes p_colindex=0.0 f_func1=abs f_func2=abs f_func3=abs
p_a=1.0 p_b=1.0 p_c=1.0
outside:
density=4 transfer=linear filename="sp.ucl" entry="Bubbles"
f_func1=ident f_func2=ident p_itrap=0.0/1.0 p_solid=yes
p_colindex=0.0 p_radie=1.0 p_col=1.0 p_numiter=0.0 p_loo=1.0
gradient:
smooth=yes index=9 color=327680 index=40 color=15794175 index=52
color=655360 index=107 color=16769274 index=187 color=2445567
opacity:
smooth=no index=0 opacity=255
layer:
method=multipass caption="M+" opacity=100
mapping:
center=0/2.125 magn=2.42424242424242424
formula:
maxiter=1000 filename="ik3.ufm" entry="SorensenCubic3"
p_PlottedPlane="1.(a-real,a-imag)" p_M=M+ p_SetBorders=no p_hide=yes
p_areal=0.0 p_aimag=0.0 p_breal=0.0 p_bimag=0.0 p_xrot=0.0
p_yrot=0.0 p_xrott=0.0 p_yrott=0.0 p_zrot=0.0 p_LocalRot=no
p_diff=no p_bailout=100.0 p_dbailout=1E-6
inside:
transfer=linear filename="sp.ucl" entry="Funcs" p_itrap=0.0/1.0
p_solid=yes p_colindex=0.0 f_func1=abs f_func2=abs f_func3=abs
p_a=1.0 p_b=1.0 p_c=1.0
outside:
density=4 transfer=linear filename="sp.ucl" entry="Bubbles"
f_func1=ident f_func2=ident p_itrap=0.0/1.0 p_solid=yes
p_colindex=0.0 p_radie=1.0 p_col=1.0 p_numiter=0.0 p_loo=1.0
gradient:
smooth=yes index=9 color=657930 index=48 color=16777205 index=104
color=655360 index=142 color=16724058
opacity:
smooth=no index=0 opacity=255
}