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fractint-digest         Friday, March 6 1998         Volume 01 : Number 123




----------------------------------------------------------------------

Date: Thu, 5 Mar 1998 16:21:32 -0500 (EST)
From: [e-mail] (Kragen)
Subject: Re: (fractint) posted par or frm files

On Thu, 5 Mar 1998, Jay Hill wrote:
> > In the very few months I've been on this list this question has
> > materialized several times so it seems worthwhile to have it permanently
> > available for reference.
>
> I agree, it is a candidate for the iFAQ, inFrequently Asked Questions.
> http://home.san.rr.com/jayrhill/
>
> Hmmm.....  mayby not.  It shows up too often.  :-)

We could have an actual FAQ, Frequently Asked Questions.  For an
excellent example of the genre, see Marshall P. Cline's C++ FAQ at
<URL:http://www.cerfnet.com/~mpcline/c++-faq-lite/>.

There are tools that will help you automatically generate such
documents; the former Linuxdoc-SGML (now called by a different name...
sgmlsomething) and LaTeX are two.

Kragen


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------------------------------

Date: Thu, 05 Mar 1998 16:36:56 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: (fractint) Bug in amber

Thanks Angela and Sylvie for your colormaps; but (after much weeping and
gnashing of teeth) I still can't quite get the effect I want. Has anyone
seen the cover of Exploring Chaos (edited by Nina Hall); that's the effect
I want but can't get. Can Fractint do that? Unaided, even?





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------------------------------

Date: Thu, 5 Mar 1998 16:40:45 EST
From: Nature102 <[e-mail]>
Subject: Re: (fractint) Fractint as prototype society

In a message dated 98-03-05 13:17:05 EST, [e-mail] writes:

<< So I'd like to hear what everyone thinks about
 - why Fractint was such a success>>

  Because it rulez and because it's free! Obviously! :-P

 <<- what other projects they've seen that worked similarly>>

  ::Shrugs:: Only one I can think of right off-hand is POV-Ray, a freeware
raytracer which is also the best one I have ever seen. (Well, the ONLY one,
actually, but it still rules. :-P)

<< - what's happening to Fractint now?  Has it reached perfection?  :) >>

  Nope. Not until it can calculate images at zoom levels of 10^(10^12) in five
seconds and generate realtime 3-D walkthroughs of fractal worlds. :-P

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Date: Thu, 05 Mar 1998 17:08:17 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: Re: (fractint) Fractint as prototype society

>- what other projects they've seen that worked similarly

Netscape 5.0 (haven't seen it but the source will be available)


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Date: Thu, 5 Mar 1998 17:15:14 -0500
From: Les St Clair <[e-mail]>
Subject: (fractint) Fractint crashes Windows Explorer

Hi Alice,

You asked,

>>I have Fractint working successfully on a PII 233. However, about 75% o=
f
>>the time when I exit Fractint (after using it in full-screen DOS mode) =
I
>>at once get a message that Windows Explorer crashed

FWIW, here's my Fractint settings for Win95, also running on a Pentium II=
:

Program tab: Run Maximized, Close on exit
Program tab, Advanced options: Suggest MS-DOS mode as necessary

Memory tab: =

> Conventional memory options - both set to auto
> EMS - not configured
> XMS - set to auto, use HMA
> protected mode memory - set to auto

Screen tab: =

> Usage - full screen, intial size =3D default
> Performance - fast ROM emulation & Dynamic memory allocation both enabl=
ed

Misc. tab:
> Foreground - Allow screen saver disabled
> background - Always suspend disabled

I've used these settings since I got my PII and have never had and
problems.

cheers, Les





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------------------------------

Date: Thu, 5 Mar 1998 17:27:45 -0500
From: George Martin <[e-mail]>
Subject: Re: (fractint) Two Fractint questions

>If you need "i", just use flip(1).

The most efficient way to represent "i" in a formula is "(0,1)". The
complex constant will be set up before the formula image starts drawing,
and thus does not entail a separate operation during the running of the
formula.

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------------------------------

Date: Thu, 5 Mar 1998 17:27:42 -0500
From: George Martin <[e-mail]>
Subject: Re: (fractint) Two Fractint questions

Rich,

>The parser might be sensitive to whitespace.

The parser ignores all white space, except that a blank signals the end of
a formula name (or a par entry, for that matter). Thus a formula named

this is good {}

would be read as having the name "this". An open paren or open brace also
signals the end of the formula name if no blank space has been reached.
Blank spaces, or lack thereof, between the formula name and the symmetry do
not affect the way the formula name, symmetry, and content are read.

George Martin

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------------------------------

Date: Thu, 5 Mar 1998 17:40:19 -0500
From: Les St Clair <[e-mail]>
Subject: (fractint) February's pars

OK gang, the collected pars from this list for February can be downloaded=

from my web pages at:

http://ourworld.compuserve.com/homepages/Les_StClair/

You'll need to get the updated formula file too.

cheers, Les

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------------------------------

Date: Thu, 5 Mar 1998 17:40:15 -0500
From: Les St Clair <[e-mail]>
Subject: (fractint) Bug in amber

Peter Jakubowicz wrote:

>>Thanks Angela and Sylvie for your colormaps; but (after much weeping an=
d
gnashing of teeth) I still can't quite get the effect I want.<<

Why not post your par here and set everyone a coloring challenge?

- - Les


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------------------------------

Date: Thu, 05 Mar 1998 17:54:32 -0500
From: davides <[e-mail]>
Subject: Re: (fractint) Bug in amber

At 04:36 PM 3/5/98 -0800, you wrote:
 (Has anyone seen the cover of Exploring Chaos (edited by Nina Hall);
that's the effect I want but can't get. Can Fractint do that? Unaided, even?)

I have a copy of the book. I _think_ I have produced something similar, but
did not care for it, so did not keep it. I think it was in Lyapunov...


The coloring of the cover (gold/black) is good, though.

[e-mail]
Back up my hard drive?
How do I put it in reverse?

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------------------------------

Date: Thu, 5 Mar 1998 17:59:18 EST
From: Genealogy1 <[e-mail]>
Subject: Re: (fractint) February's pars

Hi Les,

I can't get your web page using AOL. Could you ZIP February's PARs and send
them to my CompuSrve address. I can't receive ZIP files on AOL.

Thank you Les.

- --Bob Carr--

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------------------------------

Date: Thu, 5 Mar 1998 18:42:53 -0500
From: Sylvie Gallet <[e-mail]>
Subject: (fractint) Bug in amber

Hi Les,

>> Why not post your par here and set everyone a coloring challenge?

  Good idea!

        - Sylvie

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------------------------------

Date: Thu, 05 Mar 1998 18:55:10 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: Re: (fractint) Bug in amber

>Why not post your par here and set everyone a coloring challenge?
>
>- Les

Okey-dokes. Now, what's wrong with this picture? Thanks.

pupu_platter       {
  reset=1960 type=formula formulafile=*.frm
  formulaname=tri-mandel-2 passes=1
  center-mag=-0.81639704071728690/+0.19987975977827340/4007.741/1/85
  params=4096/2 float=y maxiter=4096 decomp=256 periodicity=0
  colors=WXz`y0<5>Xz0Wz0Wz0Wz0<60>IJ0II0II0II0<30>PIRWXz<10>_St_Rs_Rr`QqaQ\
  q<45>t3Ou2Nu3N<45>yr4ys3xs3<37>`y0
  }


frm:tri-mandel-2 { ; Sylvie Gallet <[e-mail]>, May 1997
               ; Thanks to Kerry Mitchell for the idea!
               ; real(p1) = bailout (1024 recommended)
               ; imag(p1) must be different from 0 (>=1 recommended)
   ; This formula must be used with decomp = 256 and periodicity = 0
   ;
   c = z1 = pixel , b = mz1 = cabs(z1) , summ = iter = 1
   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 , a = mz1 * mz1
   z1 = z1 * z1 + c , 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
   }




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------------------------------

Date: Thu, 05 Mar 1998 17:28:56 -0700
From: Rich Thomson <[e-mail]>
Subject: Re: (fractint) Two Fractint questions

In article <[e-mail]> ,
    George Martin <[e-mail]>  writes:
> >If you need "i", just use flip(1).
>
> The most efficient way to represent "i" in a formula is "(0,1)".

Last time I looked up the formula stuff, it wasn't obvious you could
write complex constants.  Is this only for constants, or can I write
"(imag(z),real(z))"?  (This is admittedly a contrived example, since
that expression is equivalent to flip(z).)
- --
                                               Rich Thomson
                                               [e-mail]

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------------------------------

Date: Thu, 5 Mar 1998 16:40:32 -0800
From: "gumbycat" <[e-mail]>
Subject: Re: (fractint) Bug in amber

Hi, Peter -

>>Has anyone  seen the cover of Exploring Chaos (edited by Nina Hall);
that's the effect I want but can't get.<<

My baby is still in the shop, and I'm still on cortisone, and feeling
suicidal in general.  So I just woke up to the fact that you are looking
for an amber colormap, and there are some GREAT formulas called
gravijul-this-and-that floating around out there.  I haven't seen the cover
you reference, and I don't know if this map will do it or not, but I hope
it helps.  You may have to make some alterations to get it to "fall" right
on the specific fractal you are working on.

In keeping with the group's decision that attachments are unwanted, the
specifics follow:

Enjoy!  Linda

- ---------------------------  begin here
- ------------------------------------

gravijul_amber1    { ; copyright Linda Allison 1998
                     ; [e-mail]
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=gravijul-v2 function=atan/log/log
  center-mag=0.0255918/-0.0130251/0.6418893/1.3333 params=1/1/1/1/8/-8
  float=y maxiter=300 inside=0 logmode=fly decomp=256
  viewwindows=1/1/yes/0/0
  colors=410<25>H60H60I60J70<5>O80P90Q90RA0SA0<4>WC0XD0YE1ZF1_F2<10>jO7kO7\
  lP7mQ7nR8<10>y`AzaBzaBzaB<60>vaIu`JuaL<14>uwovyrvxq<23>sWBrU9rVB<18>yvlz\
  xnzwm<20>tTAsR8qQ8<6>bE2_C1YC1<12>511200200<3>400 cyclerange=0/255
  }

gravijul_amber2    { ; copyright Linda Allison 1998
                     ; [e-mail]
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=gravijul-v2 function=atan/log/log
  center-mag=0.0255918/-0.0130251/0.2525655/1.3333
  params=0.5/0.5/0.5/0.5/8/-8 float=y maxiter=300 inside=0 logmode=fly
  decomp=256 viewwindows=1/1/yes/0/0
  colors=waI<13>vaIu`JuaL<14>uwovyrvxq<23>sWBrU9rVB<18>yvlzxnzwm<20>tTAsR8\
  qQ8<6>bE2_C1YC1<12>511200200<30>H60H60I60J70<5>O80P90Q90RA0SA0<4>WC0XD0Y\
  E1ZF1_F2<10>jO7kO7lP7mQ7nR8<10>y`AzaBzaBzaB<45>waI cyclerange=0/255
  }

gravijul_amber3    { ; copyright Linda Allison 1998
                     ; [e-mail]
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=gravijul-v2 function=cosh/log/log
  center-mag=-0.00108398/0.00344799/0.1559196/1.3333
  params=0.5/0.5/0.5/0.5/8/-8 float=y maxiter=300 inside=0 logmode=fly
  decomp=256 viewwindows=1/1/yes/0/0
  colors=u_K<4>tTAsR8qQ8<6>bE2_C1YC1<12>511200200<30>H60H60I60J70<5>O80P90\
  Q90RA0SA0<4>WC0XD0YE1ZF1_F2<10>jO7kO7lP7mQ7nR8<10>y`AzaBzaBzaB<60>vaIu`J\
  uaL<14>uwovyrvxq<23>sWBrU9rVB<18>yvlzxnzwm<14>vaM cyclerange=0/255
  }

frm:gravijul-v2 { ; Variation on Mark Christenson's gravijul by Sylvie
Gallet
   z = pixel :
   w = fn1(real(z)) , x = fn3(p1/fn2(w*w))
   w = fn1(imag(z)) , y = fn3(p1/fn2(w*w))
   z = x + flip(y) + p2
    |z| < p3
  }

- ----------  end  ------------------


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------------------------------

Date: Thu, 5 Mar 1998 20:04:07 -0500
From: George Martin <[e-mail]>
Subject: Re: (fractint) Two Fractint questions

Rich,

>
Last time I looked up the formula stuff, it wasn't obvious you could
write complex constants.  Is this only for constants, or can I write
"(imag(z),real(z))"?  (This is admittedly a contrived example, since
that expression is equivalent to flip(z).)
<

A complex constant must be in the form open paren, number, comma, number,
close paren, e.g. "(2,-4)". The example you gave should give an error
message (it will for sure in the next release, because I just rewrote the
error warning code about a week ago to make sure it does).

George

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Date: Thu, 5 Mar 1998 19:54:06 -0600 (CST)
From: [e-mail] (Paul and/or Joyce Carlson)
Subject: Re: (fractint) Bug in amber

> (Has anyone seen the cover of Exploring Chaos (edited by Nina Hall);
>that's the effect I want but can't get. Can Fractint do that? Unaided,
>even?)

I have a copy of the book, and these two images, although not created
with Fractint, can be loaded into Fractint and the colormaps saved.  I
think the colors may be close to what you want.  These URLs will
download the images directly from the web.

http://fractal.mta.ca/fractals/carlson/misc/lysq320.gif
http://fractal.mta.ca/fractals/carlson/misc/lyd101.gif

Paul Carlson



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------------------------------

Date: Thu, 5 Mar 1998 22:06:09 -0500 (EST)
From: Jim Muth <[e-mail]>
Subject: Re: (fractint) Bug in amber

>At 04:36 PM 3/5/98 -0800, you wrote:
>
>Has anyone seen the cover of Exploring Chaos (edited
>by Nina Hall); that's the effect I want but can't get.
>Can Fractint do that? Unaided, even?


I haven't seen the cover, but the attached par file draws
an image with the effect I think you are after.  It looks
especially interesting in the LL and UR corners.


Jim Muth
[e-mail]


START PAR FILE===========================================

Bugs_in_Amber      {
  reset=1960 type=formula formulafile=pupa.par
  formulaname=tri-mandel-2 passes=1
  center-mag=-0.81638853866990490/+0.19987840981595260/4\
  007.741/1/85 params=4096/2 float=y maxiter=4096
  inside=0 logmap=45 decomp=256 periodicity=0
  colors=000vsOvtO<14>vqOvb0<28>vb0vzf<14>vzfvzevzevzdvz\
  c<11>vzSvuQ<2>vuKvuIvuFvuCvu9vu6vr3vq0<7>vp0vp0vm0<2>vk0\
  vj0vj0vj0<4>vi0vh0vh0vg0vf0ve0vd0<2>v_0vZ0vZ0<18>vL0vL0t\
  J0<2>qE0oC0nB0lA0<9>9A0vQ0<2>vV0vX0vX0<31>vd0ve1ve1ve2ve\
  2<49>vrOvrOvrOvsOvsO
  }

END PAR FILE=============================================


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------------------------------

Date: Thu, 05 Mar 1998 22:05:38 -0800
From: Mark Christenson <[e-mail]>
Subject: (fractint) bug in amber - not!

comment { words and pars by Bud 3/5/98

Well, it doesn't look like what Peter wanted, but IMHO it's
worth sharing.  Nice image by Peter, cool formula (which,
due to its length, I'm not posting) by Sylvie, dressed up in
(what else?) a modified sil&gold.  Plus a bonus gravijul-v2.

Enjoy, Bud
}

pupu_gold          { ; req v19.6; Bud's recolor of Peter J's pupu_platte 3/5/98
                     ; no (c) claimed, credit -> Peter
  reset=1960 type=formula formulafile=filist.frm
  formulaname=tri-mandel-2 passes=t
  center-mag=-0.81639704071728690/+0.19987975977827340/4007.741/1/85
  params=4096/2 float=y maxiter=4096 decomp=256 periodicity=0
  colors=q00<26>000<28>nnnppprrrsssrrrppp<28>222000012<30>0kz<6>0am0_k0_j<\

21>JLMKKKLKK<21>idNkeOmgP<6>zsX<6>mgQkePjeP<19>ONLNMLMLLKKKLKKMJJ<19>h
22\
  i11k00m00<6>z00<3>s00 cyclerange=0/255
  }

gjv2-14a           { ; "Baroque", (c)  Bud 3/5/98
                     ; frm gjv2 by Sylvie Gallet
  reset=1930 type=formula formulafile=filist.frm
  formulaname=gravijul-v2 function=tan/log/log passes=t
  center-mag=0/0/0.425 params=0/1.8/0.7/0.7/6/0 float=y maxiter=300
  inside=0 decomp=256
  colors=000<31>zsX<31>000<31>z00<31>000<8>FFFHHHJJJLLLMMMOOO<17>sss<30>22\
  2000012<30>0kz<30>022 cyclerange=0/255
  }

frm:gravijul-v2 { ; Variation on Mark Christenson's gravijul by Sylvie Gallet
   z = pixel :
   w = fn1(real(z)) , x = fn3(p1/fn2(w*w))
   w = fn1(imag(z)) , y = fn3(p1/fn2(w*w))
   z = x + flip(y) + p2
    |z| < p3
  }



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Date: Fri, 06 Mar 1998 14:03:33 -0300 (BST)
From: Jerry Fox <[e-mail]>
Subject: Re: (fractint) Fractint as prototype society

> So I'd like to hear what everyone thinks about
> - why Fractint was such a success
> - what other projects they've seen that worked similarly

There's a freeware Unix text editor called Nedit, which is maintained
by a chap in Fermilab named Mark Edel, which is run in a somewhat
similar way.  (It's at:

                 ftp://ftp.fnal.gov/pub/nedit/v5_0_1/

              )

I believe Mark has some sort of 'official' responsibility for the program,
but many people have contributed to its present state.

It is freely available as source, and one of its features is syntax
highlighting for many different languages (I wonder if I could do one
for Fractint formulas and pars...?) and the macros are a popular area for
contributions, as are operational macros.

Being Unix, and available as source, there is much folklore about how
to compile on platform X with Motif Y...

(on topic again!) I like the idea of a colourmap competition, but the
temptation to start from a palette by one of our artists would be
very strong!  Maybe 'sealed entries' should be sent to a referee by a
certain date, and reveal all entries the next day?

- --

Jerry Fox, South Wales

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Date: Fri, 06 Mar 1998 07:59:54 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) Bug in amber

At 06:55 PM 3/5/98 -0800, you wrote:
>>Why not post your par here and set everyone a coloring challenge?
>>
>>- Les
>
>Okey-dokes. Now, what's wrong with this picture? Thanks.

The wizzle solution

wizzle_bug         { ; wizzle 3-6-98 based on pete j's amberbug problem
  reset=1960 type=formula formulafile=mar98.frm
  formulaname=tri-mandel-2
  center-mag=-0.81639704071728690/+0.19987975977827340/4007.741/1/85
  params=4096/2 float=y maxiter=4096 decomp=256 periodicity=0
  colors=000L60<4>G10F00F00F00K00<4>000<77>000F00<6>F00F00H20<13>rf8ui9wmA\
  <6>KA3KA2F51A00<3>N00Q70<11>cUI<4>A00ujA<13>K41A00<6>K00900<7>400400500<\
  14>K00<3>`MBOAD<3>mcPtgM<6>U00<3>F00<7>zm0<2>fT0<22>M70
  }

wizzle_gold        { ; wizzle 3-6-98 original color map for pete's problem
  reset=1960 type=formula formulafile=mar98.frm
  formulaname=tri-mandel-2
  center-mag=-0.81639704071728690/+0.19987975977827340/4007.741/1/85
  params=4096/2 float=y maxiter=4096 decomp=256 periodicity=0
  colors=000<67>000U00<14>ui9wmAvjA<14>U00<14>ui9wmAvlA<13>eM1cK0dM2<13>xp\
  `zsczrb<14>wcA<12>zmU000<75>000
  }

And since someone mentioned using an existing color map to try getting the
result Pete described, I also am posting my b2golds.map which was my point
of departure........if you compare the maps you will see what vastly
different results are obtained.  I haven't had a chance to look at any of
the other "bugs" yet.

P.S. I had the opportunity to see the Amber Room in the Catherine Palace
outside St. Petersburg last year.......fabulous!!!!! even though it isn't
restored yet. There were entire panels of amber in the most glorious
colors.  That image was in my mind when I did my version.


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Date: Fri, 06 Mar 1998 10:54:53 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: Re: (fractint) Fractint as prototype society

At 02:03 PM 3/6/98 -0300, Jerry Fox wrote:

[snip]

>(on topic again!) I like the idea of a colourmap competition, but the
>temptation to start from a palette by one of our artists would be
>very strong!  Maybe 'sealed entries' should be sent to a referee by a
>certain date, and reveal all entries the next day?
>

Good idea, too. But, maybe, instead of just a contest this time, some of
the more experienced users would consider constructively criticizing the
entries so we could learn something from it. I think a good image to use
would be one of the Mandelbrot Novas on Paul Derbyshire's web page; the
first one in particular wld serve, I think, as a good coloring litmus test.


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Date: Fri, 06 Mar 1998 08:04:53 -0800
From: Wizzle <[e-mail]>
Subject: (fractint) amberbug.map ps

My amber map (fondly called amberbug.map in my archives) is designed to be
cycled.....so please try that and see if you prefer a different combination.

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Date: Fri, 06 Mar 1998 08:34:52 -0800
From: Mark Christenson <[e-mail]>
Subject: (fractint) Bug in amber

comment { words and pars by Bud 3/6/98

Here's something a bit more in line with Peter's request.

Also, a note to Stone Soup: Please consider adding Sylvie's
outside color technique to v20 (if possible)!  Most impressive!
The two "z" screen variables are great, but would be difficult
to assimilate into the current system, which takes no parameters.

Bud

}

pupu_amber_B       { ; Bud's recolor of Peter J's "Bug in Amber", 3/6/98
  reset=1960 type=formula formulafile=filist.frm
  formulaname=tri-mandel-2 passes=t
  center-mag=-0.81639704071728690/+0.19987975977827340/5343.655/0.75/85
  params=4096/2 float=y maxiter=4096 decomp=256 periodicity=0
  colors=q00<26>000<31>sss<30>222000012<30>0kz<6>0am0_k0_j<21>JLMKKKLKK<29\
  >xg1zh0yg0<29>MC0KA0LA0<13>_86a77b66<4>h22i11k00m00<6>z00<3>s00
  cyclerange=0/255
  }



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Date: Fri, 06 Mar 1998 10:56:10 -0800
From: Mark Christenson <[e-mail]>
Subject: (fractint) "there he goes again..." Part II

comment { 3/6/1998 Mark "Bud" Christenson

on 2/16 I wrote:
>It occurred to me that it might be fun (or maybe sadistic?) to
>add a couple of knobs to old (t)rusty gravijul.  The parameters
>aren't compatible, but the function triplets are the same and the
>params are paired with the fn()s.  Why three controls for amplitude
>and only one for offset?  I dunno, call it a bias...  ;o)
>
>I don't have any .pars yet, but I'm sure I will, probably too soon.

I took me a while to get my act together, but here's a version that
should work (no, I haven't tried it yet).  Apologies to all put the
imaginary component of p2 to good use, but something had to go.
I let cold, hard science be the judge.  A survey of pars from the
list (excluding my own) indicated the following uses:

both: 5
real: 4
imag: 2
linked: 1 [real(p2) = imag(p2)]

Therefore I kept only the real component of p2.  Just so you know
I was democratic about it.  The new knobs are imag(p2) and real(p3),
with bailout as imag(p3).  p1 and real(p2) can be used as before.
Sorry the new controls are real-only, but the Fractint gods couldn't
have foreseen our parametric avarice.


Hoping this is another winner,
Bud

}

gravijul-a' { ; generalized r^(-2) by Mark "Bud" Christenson 3/6/98
; defaults: p1 = (1,0) p2 = (0,0) p3 = (0,4)
  q4 = real(p2)
  q2 = p1
  q1 = imag(p2) ; new knob 1
  q3 = real(p3) ; new knob 2
  q5 = imag(p3) ; bailout
   z = pixel:

   v = fn1(z)
   w = q1*(v*v)
   z = q3*fn3(q2/fn2(w)) + q4
    |z| < q5
  }


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Date: Fri, 06 Mar 1998 11:27:53 -0800
From: Mark Christenson <[e-mail]>
Subject: (fractint) "there he goes again..." Part IIa

comment { 3/6/1998 Mark "Bud" Christenson

*** this messages supersedes my last post ***

on 2/16 I wrote:
>It occurred to me that it might be fun (or maybe sadistic?) to
>add a couple of knobs to old (t)rusty gravijul.  The parameters
>aren't compatible, but the function triplets are the same and the
>params are paired with the fn()s.  Why three controls for amplitude
>and only one for offset?  I dunno, call it a bias...  ;o)
>
>I don't have any .pars yet, but I'm sure I will, probably too soon.

I took me a while to get my act together, but here's a version that
should work (no, I haven't tried it yet).  Apologies to all put the
imaginary component of p2 to good use, but something had to go.
I let cold, hard science be the judge.  A survey of pars from the
list (excluding my own) indicated the following uses:

both: 5
real: 4
imag: 2
linked: 1 [real(p2) = imag(p2)]

Therefore I kept only the real component of p2.  Just so you know
I was democratic about it.  The new knobs are imag(p2) and real(p3),
with bailout as imag(p3).  p1 and real(p2) can be used as before.
Sorry the new controls are real-only, but the Fractint gods couldn't
have foreseen our parametric avarice.


Hoping this is another winner,
Bud

P.S.: Oh heck, why limit ourselves?  Here's gj-a' (with a name change)
and, for the ladies (you know who you are), another variant that favors p2;
real(p1) and p2 can be used as before.

}

gravijul-a1 { ; generalized r^(-2) by Mark "Bud" Christenson 3/6/98
; defaults: p1 = (1,0) p2 = (0,0) p3 = (0,4)
  q4 = real(p2)
  q2 = p1
  q1 = imag(p2) ; new knob 1
  q3 = real(p3) ; new knob 2
  q5 = imag(p3) ; bailout
   z = pixel:

   v = fn1(z)
   w = q1*(v*v)
   z = q3*fn3(q2/fn2(w)) + q4
    |z| < q5
  }

gravijul-a2 { ; generalized r^(-2) by Mark "Bud" Christenson 3/6/98
; favors p2
; defaults: p1 = (1,0) p2 = (0,0) p3 = (0,4)
  q4 = p2
  q2 =real(p1)
  q1 = imag(p1) ; new knob 1
  q3 = real(p3) ; new knob 2
  q5 = imag(p3) ; bailout
   z = pixel:

   v = fn1(z)
   w = q1*(v*v)
   z = q3*fn3(q2/fn2(w)) + q4
    |z| < q5
  }



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Date: Fri, 6 Mar 1998 13:28:00 -0600
From: Trevor Fast <[e-mail]>
Subject: (fractint) sil&gold

Could someone e-mail me a copy (as an attachment, please) of the sil&gold
map to [e-mail]?  Will the gravijul par files be included in
the monthly posting on Les StClair's fractal page?

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Date: Fri, 06 Mar 1998 13:09:13 -0800
From: Mark Christenson <[e-mail]>
Subject: (fractint) gravijul-a1

comment { 3/6/1998 Mark "Bud" Christenson

Okay, here's my first effort.

Also, note the revised defaults.

Bud

}

gja1-03a           { ; "Stargate", (c) Mark "Bud" Christenson 3/6/98
  reset=1930 type=formula formulafile=budz.frm formulaname=gravijul-a1
  function=sqr/atanh/atan passes=b
  center-mag=2.22045e-016/8.88178e-016/0.4841549
  params=1.2/0/0/0.93/0.966/2.2 float=y inside=111 outside=real
  decomp=256
  colors=200<30>z00<31>000<8>FFFHHHJJJLLLMMMOOO<17>sss<30>222000012<30>0kz\
  <30>022000211<30>zsX<31>000
  }

frm:gravijul-a1 { ; generalized r^(-2) by Mark "Bud" Christenson 3/6/98
; defaults: p1 = (1,0) p2 = (0,1) p3 = (1,4)
  q4 = real(p2)
  q2 = p1
  q1 = imag(p2) ; new knob 1
  q3 = real(p3) ; new knob 2
  q5 = imag(p3) ; bailout
   z = pixel:

   v = fn1(z)
   w = q1*(v*v)
   z = q3*fn3(q2/fn2(w)) + q4
    |z| < q5
  }


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Date: Fri, 6 Mar 1998 14:38:56 -0700
From: Ray Montgomery <[e-mail]>
Subject: (fractint) Out of my depth

        The welcome message said, in part..."...but so are beginner's
questions, so don't be shy....."  etc.
        Joined the listserver about ten days ago and have been reading all
the messages that are being sent out. WOW!!! Am I over my head. But first....
So you know what, how, etc. - Am an old man, 77.  Got my first computer in
'83 - an Apple, of course.  Used primarily for word processing, some music
with MIDI and an elec keyboard, and playing games with my grandchildren
        About three years ago changed to IBM clone.  Rudimentary model.  Was
given, for birthday, I think, two books, "Wrinkles In Time" by George Smoot
and "Chaos" by James Gleick.  Both were extraordinary mind-blowers.  Because
of the piece in 'Chaos' about Benoit Mandelbrot I became fascinated by the
idea of fractals and spent about six monthes trying to track down a means to
do it or them.  (Incidentally, I am not only NOT a mathmetician nor involved
in science in any way, I am singularly poor in all things mathematical, I am
only an interested bystander, fascinated by the entire life and living
process but am singularly interested in art - shape, form, color - the whole
kit and kaboodle.
        I have now been generating fractals for about two years but only on
the most rudimentary and freshmanic level.  Not only do I know so little
about the process of fractal generating but also am STILL, AFTER ALL THESE
YEARS, a dunce with computers. So...."  Interruption. Have been called to
dinner by "..She who must be obeyed...."  Will be back with this, shortly.
                Sorry for the interruption, and thanks for your patience.
                                                Ray


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End of fractint-digest V1 #123
******************************