HDTenEightyP/NetNews huggingface dataset:
From: quinby@athena.cs.uga.edu (James Quinby)
Newsgroups: alt.fractals
Subject: Public Domain Software??
Date: 14 Apr 92 01:38:13 GMT
Distribution: usa
Organization: University of Georgia, Athens


I was wondering if anyone knew of public domain software (=cheap or free) that
would let me simply plot the Mandelbrot set and zoom in and in and in...ad
nauseum. I've seen several programs that do it as a screen saver on the 
Macintosh but have been unable to find anything. It doesn't even have to be
in color or do anything fancy. I just finished reading The Ghost of the Grand
Banks by Arthur C. Clarke and am now even more intrigued by this phenomenon.
If anyone knows where I can download something like this please email me at
quinby@athena.cs.uga.edu. 
 
 Oh...I guess I should let you know that it needs to be Macintosh software,
 because that's what I am using..However, I also have access to IBM clones and
 would also appreciate information regarding similar software for DOS machines.

Thanks!

J. Quinby
Newsgroups: alt.fractals
From: as666@cleveland.Freenet.Edu (Jonathan Roy)
Subject: Fractal landscapes and planets
Organization: Case Western Reserve University, Cleveland, Ohio, (USA)
Date: Wed, 15 Apr 92 07:38:11 GMT


Can someone direct me to some sources (papers, books, etc) on using
fractals to generate 3D landscapes, or even 3D planets? 

Thank you! (Please reply in email!)

-- 
  |||  Jonathan Roy (The Ninja) Internet: as666@cleveland.freenet.edu
  |||  -- BBS: Darkest Realm - (Down for now) - Public UUCP/Usenet --
 / | \ "...make him want to change his name,take him to the cleaners,
 devastate him, wipe him out, humiliate him." -CHESS   GEnie: J.ROY18
Newsgroups: alt.fractals
From: jliddle@rs6000.cmp.ilstu.edu (Jean Liddle)
Subject: Re: Fractint and Desqview
Summary: YES!
Date: Wed, 08 Apr 1992 05:31:25 GMT
Organization: Illinois State University

In article <TROCH.92Apr7161237@gandalf.Rutgers.EDU> troch@gandalf.Rutgers.EDU (Rod Troch) writes:
>
>Is it possible for Fractint to run under Desqview?
>

YES! At least, on an i386 or better - I don't know about 8088's or 286's.

Some graphics modes get messed up when switching back and forth with DV,
as it is unable to recognize and restore some of the more esoteric
resolutions (360x480x256, for example).  This can be fixed by switching
to one of the text menus in Fractint and then switching back to the image.

Jean.
-- 
Jean Liddle
Computer Science, Illinois State University 
e-mail:  jliddle@rs6000.cmp.ilstu.edu
         jliddle@katya.acs.ilstu.edu
From: pkrause@triton.unm.edu (Paul Krause CIRT)
Newsgroups: alt.fractals
Subject: can't read .PRJ files on my TC++ (Fractint 17.2)
Date: 9 Apr 92 04:30:53 GMT
Article-I.D.: lynx.hqrj4pq
Organization: University of New Mexico, Albuquerque NM


I was wondering if someone could help me.  I am trying to compile 
Fractint 17.2 on my machine (I just FTP'd the source) but although
the .PRJ files are supposed to be compatible with TC++, I keep 
getting an error when I try to open the project file(s).  Any 
suggestions would be helpful.
Thank you.

Erik 
(posting through pkrause@triton.unm.edu)
Newsgroups: alt.fractals
From: tarquin@athena.mit.edu (Robert P Poole)
Subject: Fractint source code
Organization: Massachusetts Institute of Technology
Distribution: na
Date: Tue, 14 Apr 1992 18:59:44 GMT


Hi, all.  I am sure this is a FAQ, but I will ask anyway.  Where can I FTP the
source code to Fractint from?

I am looking to use the C calculation engines to write my own fractal program
for the Amiga.

Thanks in advance!

--
Robert P. Poole                       tarquin@athena.mit.edu
46 Massachusetts Avenue               MIT Course VIII
311C Bexley Hall                      "I feel like a lost sock in the
Cambridge, MA  02139                   laundromat of oblivion."
Newsgroups: alt.fractals
From: dab6@po.CWRU.Edu (Douglas A. Bell)
Subject: Re: Fractint and Desqview - Try OS/2
Reply-To: dab6@po.CWRU.Edu (Douglas A. Bell)
Organization: Case Western Reserve University, Cleveland, OH (USA)
Date: Thu, 9 Apr 92 15:36:49 GMT


In a previous article, troch@gandalf.Rutgers.EDU (Rod Troch) says:

>>Is it possible for Fractint to run under Desqview?
>>
>
>	Jean> YES! At least, on an i386 or better - I don't know about
>	Jean> 8088's or 286's.
>
>Ok.  I took Jean's advice and ran Fractint under Desqview.  It was
>partially successful.  Fractint ran fine when generating a new
>fractal image ('t').  But Fractint and DV crashed (actually locked the
>window) when trying to access the '@' images.
>
>Does anyone have any reasons for this?

I don't have any reasons, but perhaps you might want to try multi-tasking
fractint under os/2 2.0.  I have been doing so for several months with
laudable results.  Fractint behaves very well in a window or full screen,
forground or back ground.  THe only advice is that you should be careful
switching into and out of supervga modes if you don't have os/2 svga drivers.
The other notable difference is that the color cycling is extremely fast.
I have to hit the down arrow about 40 times to slow it down to the speed
at which it runs under dos.

Douglas Bell-
-- 
"We have developed Windows applications, but we didn't inhale."
          -Philippe Kahn, Borland International
Newsgroups: alt.fractals
From: quinonec@craft.camp.clarkson.edu (Q)
Subject: Julia set help please
Organization: Clarkson University
Date: Wed, 15 Apr 1992 18:13:55 GMT

I'm presently working on my own fractal generator.  It can do the 
madelbrot set and lyopenov (sp?) space.  I would like to add to
it the julia set fractals.  I know the algorithm for the julia set is
very close to the code for the madelbrot set, but don't know in what
way.  Could someone please help with the algorithm?  Many Thanks in advance.


					Carlo
					quinonec@craft.camp.clarkson.edu
Organization: Middle East Technical University - Computer Center
Date: Wednesday, 8 Apr 1992 16:25:41 TUR
From: <E64674@TRMETU.BITNET>
Newsgroups: alt.fractals
Subject: Re: alt.fractals FAQ

kdsjdjsjvnvdfjvjhfhsndcjnlsdmc{zx~msdkjlowemcmmkdkwe`jjdkadkdsad
dccccdc

magic
From: troch@gandalf.Rutgers.EDU (Rod Troch)
Newsgroups: alt.fractals
Subject: Fractint and Desqview
Date: 7 Apr 92 20:12:37 GMT
Organization: Right Coast HQ For Stupid Pub Tricks


Is it possible for Fractint to run under Desqview?

And if not, will newer versions of Fractint be DV Aware?

Rod
--
-----------
If you yell try : Rod Troch                     | Zeta Beta Tau - Kean College
internet        : troch@gandalf.rutgers.edu     | 
                : troch@pilot.njin.net          |
Xref: sparky alt.fractals:814 comp.os.msdos.desqview:1608
From: troch@gandalf.Rutgers.EDU (Rod Troch)
Newsgroups: alt.fractals,comp.os.msdos.desqview
Subject: Re: Fractint and Desqview
Date: 8 Apr 92 15:14:30 GMT
	<1992Apr08.053125.5541@rs6000.cmp.ilstu.edu>
Followup-To: alt.fractals
Organization: Right Coast HQ For Stupid Pub Tricks
In-reply-to: jliddle@rs6000.cmp.ilstu.edu's message of 8 Apr 92 05:31:25 GMT

>>>>> "Jean" == Jean Liddle <jliddle@rs6000.cmp.ilstu.edu> writes:

	Jean> In article <TROCH.92Apr7161237@gandalf.Rutgers.EDU>
	Jean> troch@gandalf.Rutgers.EDU (Rod Troch) writes:
>
>Is it possible for Fractint to run under Desqview?
>

	Jean> YES! At least, on an i386 or better - I don't know about
	Jean> 8088's or 286's.

Ok.  I took Jean's advice and ran Fractint under Desqview.  It was
partially successful.  Fractint ran fine when generating a new
fractal image ('t').  But Fractint and DV crashed (actually locked the
window) when trying to access the '@' images.

Does anyone have any reasons for this?

Rod
--
-----------
If you yell try : Rod Troch                     | Zeta Beta Tau - Kean College
internet        : troch@gandalf.rutgers.edu     | 
                : troch@pilot.njin.net          |
From: wesson@ducvax.auburn.edu (Rick H. Wesson)
Newsgroups: alt.fractals
Subject: Think about this IFS.
Date: 14 Apr 92 03:25:56 GMT

Think about this little IFS-- 
cut here -------------------------------- cut here ----------------------cut..
think	{
0.000000 0.047619 -0.214286 0.000000 -5.426519 5.068762 0.100485
0.000000 0.047619 -0.214286 0.000000 -2.853395 5.068762 0.100485
0.000000 0.047619 -0.214286 0.000000 0.148584 5.068762 0.100485
0.000000 0.047619 -0.214286 0.000000 1.435147 5.068762 0.100485
0.095238 0.000000 -0.166667 0.238095 2.642731 4.001366 0.009576
0.000000 0.047619 -0.214286 0.000000 3.579417 5.068762 0.100485
0.000000 0.047619 -0.214286 0.000000 4.865980 5.068762 0.100485
-0.095238 -0.095238 -0.071429 0.047619 6.667195 5.535706 0.055825
-0.119048 0.000000 0.000000 -0.095238 -4.010594 6.793675 0.055825
0.119048 0.000000 0.000000 -0.095238 -1.907212 5.078259 0.055825
0.000000 0.047619 -0.214286 0.000000 -1.137978 5.068762 0.100485
0.071429 0.047619 -0.142857 0.000000 6.226046 4.284558 0.074897
0.095238 0.000000 0.000000 -0.095238 -6.363206 6.793675 0.044660
}

==============================================================================
Rick H. Wesson
Student Assistant		Internet:  Wesson@ducvax.auburn.edu
Auburn University 		Bitnet:    wesson@auducvax
Dep. of Management
Auburn, AL
From: rfschaa@cs.vu.nl (Schaaf RF)
Newsgroups: alt.fractals
Subject: Fractint 17.x and Trident VGA
Date: 15 Apr 92 07:55:07 GMT

I know the same thing was mentioned before but a solution has not yet
been given and the discussion seems to have died down.

The problem is that when a picture of a fractal is displayed and for
example you want to change the screen colors you have to go to the
text screen that lets you do that, then when you get back to the
graphics screen random bars occur in the image which effectively
destroy the image.

People have suggested using the textsave=save option and while this
workes it is very impractical (have you ever tried to use that option
with a 800x600x256 image on a 8Mhz 8086 with a harddisk that is not
the fastest in the world?). I also tried textsave=bios but that doesn't
work either.

So the problem is that not using textsave=save makes fractint almost
useless and using textsave=save makes it almost impossible to work with.
The result is that I now use version 16 again but I don't think version
17 has been released only to let people move back to version 16.

Is there any solution to this problem? Maybe there could be some command
line switch that forces Fractint to use the screen restore method that
was used before version 17 was introduced.

Any comments?

Richard
From: jdonovan@perry.berkeley.edu (John Donovan)
Newsgroups: alt.fractals
Subject: Code for Dentritic Fractal Growth?
Date: 14 Apr 1992 23:24:25 GMT
Organization: UC Berkeley
Distribution: world
NNTP-Posting-Host: perry.berkeley.edu
Originator: jdonovan@perry.berkeley.edu

I need some sample or pseudo code that will allow me to plot fractal growth
of dendrites. I've played with IFS stuff but this is more related to
surface tension, chemistry. Can anyone help me? Thanks.
-- 
| JOHN J. DONOVAN                   Electron Beam Micro-Analytical Laboratory |
| DEPARTMENT OF GEOLOGY                       *** PROBE THE EARTH ***         |
| UNIVERSITY OF CALIFORNIA          Phone :  (510) 642-5459 or (510) 642-3996 |
| BERKELEY, CA, 94720               Internet :   jdonovan@garnet.berkeley.edu |
Newsgroups: alt.fractals
From: omitchel@jarthur.claremont.edu (Ocie *banjo* Mitchell)
Subject: Re: Julia set help please
Organization: Harvey Mudd College, Claremont, CA 91711
Date: Wed, 15 Apr 1992 20:38:46 GMT

In article <quinonec.703361635@craft.camp.clarkson.edu> quinonec@craft.camp.clarkson.edu (Q) writes:
>I'm presently working on my own fractal generator.  It can do the 
>madelbrot set and lyopenov (sp?) space.  I would like to add to
>it the julia set fractals.  I know the algorithm for the julia set is
>very close to the code for the madelbrot set, but don't know in what
>way.  Could someone please help with the algorithm?  Many Thanks in advance.
>
>
>					Carlo
>					quinonec@craft.camp.clarkson.edu
>
>
I'm not sure of this, but I think the julia set is composed of points that
do not escape to infinity (as in the mandelbrot set), except each pixel is
plugged into z0 and then passed through the formula z(k+1)=z(k)^2+l where l
is the "seed" point that defines the set you want.  If this math is wrong, 
please somebody post t he correct formula.  Hope this helps, Ocie

----------------------------------------------+-------------------------------
``What do you think sirs?''  -Joel (mst3k)    | do not write above this line
----------------------------------------------+------------------------------- 
   __             _ _ _                       | Ocie Mitchell
  / ')           ' ) ) )  _/_    /      /) /) | omitchel@jarthur.claremont.edu
 /  / _. o _      / / / o /  _. /_  _  // //  | Q:is that your real name? 
(__/ (__(_(<_    / ' (_(_(__(__/ /_(<_(/_(/_  | A:yes, it is my real name.
----------------------------------------------+-------------------------------
Xref: sparky alt.fractals:842 news.answers:1052
From: rr@sco.COM (Renaldo Recuerdo)
Newsgroups: alt.fractals
Subject: Re: Need Help w/ Lyapunov Exponent
Date: Mon, 06 Apr 92 15:52:43 GMT
Organization: The Santa Cruz Operation, Inc.


pgheit01@ulkyvx.louisville.edu writes:

|I am interested in using chaos as a subject for an upcoming exhibit at my
|school.  I am particularly interested in using the Lyapunov Exponent to form
|pictures such as those in the Scientific American from several months ago.  

|I am in the process of writing my own picture generator like the article
|suggested.  Does anyone know of any pd programs available with source code to
|look at? Can I ftp them?
------------------------------------------------------------------------------
I have submitted the source to my "lyap" program to comp.sources.x. Both
Motif and non-Motif (straight Xlib) versions have been submitted. That is,
it's a graphical client which uses the X window system. If you have difficulty
retrieving the sources from comp.sources.x, e-mail a request for source to
me. In addition to generating the types of pictures described in the Scientific
American article (*), "lyap" allows you to select between a variety of maps of
the unit interval into itself. In addition, you can specify a "function 
forcing function" so that the maps which are iterated vary as well as the
parameters to those maps.

I believe the latest version of fractint also contains lyapunov exponent
calculation routines.
-rr-
-- 
*Cf. de Selby: "Footnotes are loved by academics, not because they 
are necessary, but because they are intimations of infinity: prose 
commenting on prose adumbrates mind contemplating mind and opens 
an exuberance of mirrors." Golden Hours, I, 33.
From: mjg51721@uxa.cso.uiuc.edu (Michael James Gebis)
Newsgroups: alt.fractals
Subject: Re: three dimensional fractals
Date: 7 Apr 92 04:15:31 GMT
Article-I.D.: ux1.1992Apr7.041531.24047
Organization: University of Illinois at Urbana

stgprao@xing.unocal.com (Richard Ottolini) writes:

>In article <1992Apr3.170833.1@acfcluster.nyu.edu> reznick@acfcluster.nyu.edu writes:
>>i'm trying to create a three dimensional koch snowflake.
>>if anyone knows of any kind of algorith to do this, or could help me,
>>i would be very appreciative.  the snowflake will be composed of 
>>equal lateral triangular pyramids.

I seem to recall that this type of fractal has a very intesting property...
It approaches a perfect cube!
REALLY!  (unless we're talking about different things)
I recall reading this surprising result in some science mag...but it wasn't
SciAm, I pretty much checked them all for references about this.  Anyway, the
article included pictures that showed that a cube would result.  The first two
equallateral pyramids (tetrahedrons, really), each with four corners, define
the eight corners of the cube.  If you can believe it, adding more tetrahedrons
just fills out the rest of this cube.
REALLY!
Anybody else back me up on this?

..................................................................
: Mike Gebis  mjg51721@uxa.cso.uiuc.edu  Nut on the Net w/o a net:
: Would you believe it?  It's just my luck!  NO RECESS! - Nirvana:
:................................................................:
From: corwin@ftp.com (Lord Among Panthers)
Newsgroups: alt.fractals
Subject: Fractint for os2
Date: 10 Apr 92 18:12:07 GMT
Organization: MIT Laboratory for Computer Science
Nntp-Software: PC/TCP NNTP

The only source listed for fractint for OS/2 in the FAQ is from compuserve.
Is there anywhere I can ftp it from (or can someone tell me how to ftp
it from compuserve if such is an option), or is someone willing to send
it to me?

thanx,

corwin
Newsgroups: alt.fractals
From: gmcquary@Ingres.COM (George F. McQuary)
Subject: Re: ink spreading through paper
Reply-To: gmcquary@Ingres.COM (George F. McQuary)
Organization: Ask Computer Systems Inc., Ingres Division, Alameda CA 94501
Distribution: usa
Date: 6 Apr 92 19:58:55 GMT

In article <1992Apr4.211737.4636@muddcs.claremont.edu> omitchel@jarthur.claremont.edu (Ocie *banjo* Mitchell) writes:
>In article <1992Apr3.233427.5756@athena.mit.edu> mlevin@forte.cs.tufts.edu writes:
>>
>>     I just noticed something neat. If you get a piece of white
>>drawing paper, and wet it with water (moisten, not soak), and put a

(and further...)

>The result will look something like a tree...

The spreading out of the ink through the paper is dependent on the position of 
the fibers in the paper, and their length. The ink tends to flow along the
individual fiber, and be blocked trying from flowing against the grain of the
fibers.

Most paper has a random distribution of fibers in different orientations,
but a consistency in fiber length. You'll find that coarse grained
paper (which has long fibers) will tend to make the ink reach out more,
providing a "tree like" appearance. On the otherhand, fine grained paper will
not spread out the ink as much but instead saturate itself through an area,
leading to bush-like clumpy areas with slightly fuzzy edges.

There is no repeating of a common structure at lower and lower levels,
so this is clearly not a true fractal. It's behavior probally falls closer to
the particle attractor models that were being seen on the net last year.

The best I can figure is a "sphagetti and ants" model. You decide your
uniform length of sphagetti, toss it all over the floor, and then
release a set number of "ants" who will walk from their current segment
to another segment iff it gets them closer to the opposite wall (to keep
ink from flowing up against gravity --we can probally ignore the ink particle
inertia from its initial introduction to the medium). Trace all paths an ant
can walk that are distance y from his starting point.

Eech. We're already talking about calculating tens of thousands of line
segments, determining all collisions and then the angle of incidence for each
case. 

--
George F. McQuary 
"He is mad, bad and dangerous to know." -Lady Caroline Lamb
Newsgroups: alt.fractals
From: bmartino@magnus.acs.ohio-state.edu (Bob Martino)
Subject: Chaos for Classes
Organization: The Ohio State University
Distribution: usa
Date: Thu, 9 Apr 1992 20:25:27 GMT


Question for general consumption follows:

     I am a student at THE Ohio State University, majoring in
 math/physics education.  This is my last quarter here (YEESSSSSSS!),
and I am doing some independent research in mathematics to fill out
my last 4 credits.  I am working on trying to understand chaos in
general, and I need to know this:  Are there any good magazine or
newspaper articles on the subject of chaos and fractals and how they
relate to the "real world?"

     I am looking for things accessible to the average High School
student.  Not necessairly too much math, but a definite tie in to
the life and times of our country's typical person.  Meteorology
is a good place to start, I guess, but what else is there?

     Any help anyone could give me would be greatly appreciated.
I will love you forever, and all that stuff.  My need is somewhat
urgent, as the professor I'm working with is definately pushing
me to bring some of these things to him (he wants to use them as well).

     Domo Arigato Gozaimasu!

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
!       That Bob Martino Guy          !  "I think, therefore I am."          !
! bmartino@magnus.acs.ohio-state.edu  !                  -Descartes          !
!                                     !  "I am that I am."                   !
!  God INVENTED science.  So there.   !                  -God                !
!      ^^^^^^^^                       !  "I am a jelly dougnut."             !
!                                     !                  -V.P. Dan Quayle    !
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
From: eric.hunt@matrix.sbs.com (Eric Hunt) 
Newsgroups: alt.fractals
Subject: ink spreading through pap
Date: 6 Apr 92 23:11:00 GMT
Distribution: world
Organization: The MATRIX BBS - Birmingham, AL - 205-323-2016
Reply-To: eric.hunt@matrix.sbs.com (Eric Hunt) 

M>drop of ink at the top, and hold it vertically, it runs down and sinks.
M>into the paper forming what looks to be a very fractal form. Does

That's generally a function of the arrangement of the paper fibres. Each
piece of paper should form a different 'form.'
---
 . SPEED 1.2b #4 . Shoplifters with the runs take Clepto Bismol...
From: cyberman@toz.buffalo.ny.us (Cyberman)
Newsgroups: alt.fractals
Subject: Hardware Fractal Engine
Date: 11 Apr 92 20:07:47 GMT
X-Maildoor: WaflineMail 1.00r

WJE>Hi.  I am taking a digital design class at school.  As part of the class, we
WJE>e
WJE>to do a final project.  We decided to do a hardware fractal machine.  basica
WJE>it will calculate and display an image of the mandelbrot set on a video scre
WJE>If anyone has information about needed precision, best algorithm (with least
WJE>hardware requirements, preferrably), etc, please either post it here or send
WJE>an email message.

That is impressive but diffivult.  Fortunatly you can use fixed
point aritmetic since the mandelbrot set fits within a fixed
region.  The result would have to be scaled of course.  Also
since the problem easily lends to parallelism you could make a
multi proccesor engine.  The number of digits of precision will
have to be VERY high in order to generate a sufficiently acurate
image when zooming.

Steve Ciarcia had a series of articles in Byte [Oct/Nov/Dec 1988]
entitled A Supercomputer.  He tied together 64 8751's so they
could calculate the mandlebrot set in parallel this is a VERY
expensive way to go.  :)  It was tied to an AT via the serial
port.

You will probably have to take a similiar approach. You probably
could use a microcontroller to control your calculation hardware.
That would simplify a lot of things and make controling processor
states much easier. Have fun, you have taken on a massive
project.

        STEPHEN CYBERMAN@TOZ.BUFFALO.NY.US
        commiserated at Sat  04-11-1992  11:24:43
---
 * SLMR 2.1a * Why use a little word when a big one will do?
                     
Newsgroups: alt.fractals