Chillheimer
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« on: August 31, 2016, 12:27:55 AM » |
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Hi guys! I am wondering if either z-->z/c² or z-->z*c² will form anything fractal if fed with the right starting values. And what happens if I set c to a fixed value and just change z?
I have no clue how I could check any of this or where to start researching. How do you google for a formula?! Is there a program(preferrably freeware) that you can feed with your own formulas and play around to see if it generates any fractal images?
Any input is appreciated!
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« Last Edit: August 31, 2016, 12:45:38 AM by Chillheimer »
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--- Fractals - add some Chaos to your life and put the world in order. ---
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PieMan597
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« Reply #1 on: August 31, 2016, 01:23:52 AM » |
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Xaos meet you input your own formulas, it is free on Windows and Linux.
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TheRedshiftRider
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« Reply #3 on: August 31, 2016, 05:55:45 AM » |
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Fractal zoomer: https://sourceforge.net/projects/fractalzoomer/?source=directoryThis application has a user formula feature. (Side-note: I actually requested the feature because I needed it for something else. )
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Motivation is like a salt, once it has been dissolved it can react with things it comes into contact with to form something interesting.
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Chillheimer
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« Reply #4 on: August 31, 2016, 08:44:21 AM » |
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thank you guys! I tried xaos - obviously the formulas don't do anything special, all I get is a circle
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--- Fractals - add some Chaos to your life and put the world in order. ---
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PieMan597
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« Reply #5 on: August 31, 2016, 06:05:55 PM » |
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Here's a formula to try: (z^2+c)/(c^2+z)
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lkmitch
Fractal Lover
Posts: 238
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« Reply #6 on: August 31, 2016, 07:54:36 PM » |
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Here's a Julia-type fractal based on Pieman's idea. f(z) = (z^n+c)/(c^n+z), for n = -2.
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Adam Majewski
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« Reply #7 on: September 02, 2016, 07:19:14 PM » |
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Great. How it was made ?
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simon.snake
Fractal Bachius
Posts: 640
Experienced Fractal eXtreme plugin crasher!
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« Reply #8 on: September 02, 2016, 09:55:04 PM » |
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FractInt (for all its failings) does a reasonable job with its built-in formula parser.
I admit I use it to play with ideas (even if I have no idea if they'll work - they usually don't) to try to find interesting things. That's how I found my 'Simonbrot' that people have been exploring.
The only problem with it is that because it was a DOS program you have to load your favourite text editor (notepad anyone) and create a .frm file containing your formulas.
This can be saved anywhere but by default FractInt looks in its own folder first. I think that may also be configurable.
If you go down that route let me know so I can see if there's any way to assist.
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To anyone viewing my posts and finding missing/broken links to a website called www.needanother.co.uk, I still own the domain but recently cancelled my server (saving £30/month) so even though the domain address exists, it points nowhere. I hope to one day sort something out but for now - sorry!
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simon.snake
Fractal Bachius
Posts: 640
Experienced Fractal eXtreme plugin crasher!
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« Reply #9 on: September 02, 2016, 10:15:41 PM » |
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A rather plain circle in FractInt for both formulas too.
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To anyone viewing my posts and finding missing/broken links to a website called www.needanother.co.uk, I still own the domain but recently cancelled my server (saving £30/month) so even though the domain address exists, it points nowhere. I hope to one day sort something out but for now - sorry!
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lkmitch
Fractal Lover
Posts: 238
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« Reply #10 on: September 07, 2016, 05:40:36 PM » |
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Great. How it was made ?
I made it in Ultra Fractal. Here is the formula. If you don't use Ultra Fractal, you should be able to read the code and figure it out for the program that you use. The Mandelbrot version is trickier, since finding a critical point for beginning the iteration is not trivial. rational-julia { ; ; from pieman597 ; http://www.fractalforums.com/general-discussion-b77/t24459/msg95653/#new; ; based on f(z) = (z^2+c)/(c^2+z) ; generalize to any power ; init: complex bottom=(0,0) complex c=@julparam complex cton=c^@power complex top=(0,0) complex z=#pixel loop: top=z^@power+c bottom=z+cton z=top/bottom bailout: |z|<@bailout default: title="rational julia" complex param julparam caption="julia parameter" default=(0,1) endparam complex param power caption="power" default=2 endparam float param bailout caption="bailout" default=1000 endparam switch: type="rational-mandelbrot" power=power bailout=bailout }
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Adam Majewski
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« Reply #11 on: October 07, 2016, 08:35:07 PM » |
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LionHeart
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« Reply #12 on: April 18, 2017, 08:54:01 AM » |
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Hi Simon, I notice in your message: "Re: Do z-->z/c² or z-->z*c² create a fractal « Reply #8 on: September 02, 2016, 09:55:04 PM »" that you talk about the function parser in FRACTINT. I have a windoze program with an on-screen parser based on the FRACTINT library. You may find it useful for playing with fractal formulae rather than all that tedious mucking about in hyperspace using text files interpreted in a Dossy program It's a rough and ready program, but I have fun: http://www.deleeuw.com.au/download/SetupManpWIN.exeIf you actually decide to try it, press T and the direct formula parser is in the middle of the dialogue box. Have fun. Paul the LionHeart
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Paul the LionHeart
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simon.snake
Fractal Bachius
Posts: 640
Experienced Fractal eXtreme plugin crasher!
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« Reply #13 on: April 18, 2017, 10:22:48 PM » |
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Hi Paul
I do believe I have your program installed (or at least on my laptop) so I have used it before. What's the current version number? I've got v3.01j installed.
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To anyone viewing my posts and finding missing/broken links to a website called www.needanother.co.uk, I still own the domain but recently cancelled my server (saving £30/month) so even though the domain address exists, it points nowhere. I hope to one day sort something out but for now - sorry!
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LionHeart
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« Reply #14 on: April 18, 2017, 10:57:15 PM » |
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Hi Simon,
The current version of ManpWIN (including SimonBrot) is 3.03a.
I hope you can get it. Let me know if you can't and we will find a way.
I tried to attach it to a message but got: "Your file is too large. The maximum attachment size allowed is 256 KB. "
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Paul the LionHeart
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