Another plant inspired fractal. Do I need a policy on giving posts names? I could say "the description is swirling ferns" which is analogous to giving it a title but I could also use the terms "caption" or "tag". Just can't make up my mind I suppose. Looking at the color of the dark green I could have also used "a plate of spinach" but that doesn't sound dignified enough. fract291.gif { ; ferns ; blank ; calctime 0:28:53.39 ; created Jul 03, 2010 ; Fractint Version 2004 Patchlevel 9 reset=1960 type=formula formulafile=frac_ml.frm formulaname=tri-fn+fn function=sqrt/sqr center-mag=0.55523/1.10691/2.73224 params=1000.235145115513/1.456831568346202/0.3772087771233253/0.02272103\ 030487991 float=y maxiter=12000 inside=0 outside=atan periodicity=0 cyclerange=0/255 colors=0R00Q00P00O00N00M00L00K00J00I00H00G00F00E00D00C00B00A009008007006\ 00500400300000200000000000200300500600800A00B00D00E00G00I00J00L00M00O00Q\ 00R00T00U00W00Y00Z00`00a00c00e00f00h00i00k00m01m03m04n06n07o09o0Ao0Cp0Ep\ 0Fq0Hq0Iq0Kr0Lr0Ns0Ps0Qs0St0Tt0Vu0Wu0Yu0Zv0`v0bw0cw0ew0fx0hx0iy0ky0mz0mz\ 1mz3nz5nz7oz9ozBpzDpzFpzHqzJqzLrzNrzPrzRszTszVtzXtzZuz`uzbuzdvzfvzhwzjwz\ lwznxzpxzryztyzvzzxzzzzzyzzwzzvzzuzztzzrzzqzzpzznzzmzzlzzkzzizzhzzgzzezz\ dzzczzbzz`zz_zzZzzXzzWzzVzzTzzSzzRzzQzzOzzNzzMzzKzzJzzIzzHzzFzzEzzDzzBzz\ Azz9zz8zz6zz5zz3zz2zz0yz0xz0vz0uz0tz0sz0qz0pz0oz0mz0lz0kz0iz0hz0gz0fz0dz\ 0cz0bz0`z0_z0Zz0Yz0Wz0Vz0Uz0Sz0Rz0Qz0Oz0Nz0Mz0Lz0Jz0Iz0Hz0Fz0Ez0Dz0Bz0Az\ 09z08z06z05z03z02z00z00y00x00w00v00u00t00s00r00q00p00o00n00m00l00k00j00i\ 00h00g00f00e00d00c00b00a00`00_00Z00Y00X00W00V00U00T00S0 } frm:tri-fn+fn { ; Sylvie Gallet ; Thanks to Kerry Mitchell for the idea! ; real(p1) = bailout ; imag(p1) must be different from 0 (>=1 recommended) ; z=fn1(z) + p2*fn2(z) ; This formula must be used with decomp = 256 and periodicity = 0 ; z1 = pixel , mz1 = cabs(z1) , summ = iter = 0 b1 = abs(real(p1)) , f = b1^0.1 b2 = b1*f , b3 = b2*f , b4 = b3*f , b5 = b4*f , b6 = b5*f b7 = b6*f , b8 = b7*f , b9 = b8*f , b10 = b9*f , b11 = b10*f iter1 = iter2 = iter3 = iter4 = iter5 = iter6 = iter7 \ = iter8 = iter9 = iter10 = summ_tot = iter_tot = 0 k = imag(p1) * (0.0,6.28319530718) : iter = iter + 1 , za = fn1(z1) , a = cabs(za) zb = p2*fn2(z1) , b = cabs(zb) z1 = za + zb , mz1 = cabs(z1) , a_b = abs(a - b) summ = summ + (mz1 - a_b) / (a+b - a_b) IF (mz1 > b1) IF (iter1==0) iter1 = iter iter_tot = iter_tot + iter1 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b2) IF (iter2==0) iter2 = iter iter_tot = iter_tot + iter2 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b3) IF (iter3==0) iter3 = iter iter_tot = iter_tot + iter3 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b4) IF (iter4==0) iter4 = iter iter_tot = iter_tot + iter4 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b5) IF (iter5==0) iter5 = iter iter_tot = iter_tot + iter5 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b6) IF (iter6==0) iter6 = iter iter_tot = iter_tot + iter6 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b7) IF (iter7==0) iter7 = iter iter_tot = iter_tot + iter7 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b8) IF (iter8==0) iter8 = iter iter_tot = iter_tot + iter8 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b9) IF (iter9==0) iter9 = iter iter_tot = iter_tot + iter9 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b10) IF (iter10==0) iter10 = iter iter_tot = iter_tot + iter10 , summ_tot = summ_tot + summ ENDIF IF (mz1 > b11) iter_tot = iter_tot + iter , summ_tot = summ_tot + summ z = exp (summ_tot * k / iter_tot) ENDIF ENDIF ENDIF ENDIF ENDIF ENDIF ENDIF ENDIF ENDIF ENDIF ENDIF mz1 <= b11 } Roger Alexander _________________________________________________________________ Look 'em in the eye: FREE Messenger video chat http://go.microsoft.com/?linkid=9734386