ouuu yeah!! i have pass to many hours this cristmas trying to do this. thank's

thank you!!

Cool! I was looking for this. Can you upload some other fractals that would be useful for designers and architects who is keen on creating something nature-like.

That seems very interesting! Do you have a Fractal Plant Script which works in 3D and not 2D?
It would be really wonderful if you or anyone could share such an example...
Thanks anyway

Hi h8cru,
I don't have it, but you probably can simply rotate the reference plane and have additional iterations.

Hi Leonid,
If you have an algorithm for a 3d fractal example, I'll be happy to write the code. Some of them it is only a matter of having multiple iterations using different initial string or location.

What do you mean by algorithm? A mathematical expression?

Algorithm is the logical description of a problem or basically a step-by-step description using mathematical or plane english to describe the problem. Here is what wikipedia defines it:
http://en.wikipedia.org/wiki/Algorithm

Hi Rajaa,

Thanks for the definition. Is it possible to write in parametric L Systems to the core structure you have written here? How would you suggest going about it?

Thanks again,

M

Can you elaborate. What parameters you wish to control?

Hi Rajaa Thaks for the quick reply.

This is an exerpt from algorithmic beauty of plants introducing parametric L-Systems (p40):

1.10 Parametric L-systems
Although L-systems with turtle interpretation make it possible to Motivation generate
a variety of interesting objects, from abstract fractals to plant-like
branching structures, their modeling power is quite limited. A major
problem can be traced to the reduction of all lines to integer multiples
of the unit segment. As a result, even such a simple figure as an
isosceles right-angled triangle cannot be traced exactly, since the ratio
of its hypotenuse length to the length of a side is expressed by the irrational
number √2. Rational approximation of line length provides only
a limited solution, because the unit step must be the smallest common




1
1
√2
denominator of all line lengths in the modeled structure. Consequently,
the representation of a simple plant module, such as an internode, may
require a large number of symbols. The same argument applies to angles.
Problems become even more pronounced while simulating changes
to the modeled structure over time, since some growth functions cannot
be expressed conveniently using L-systems. Generally, it is difficult
1.10. Parametric L-systems 41
to capture continuous phenomena, since the obvious technique of discretizing
continuous values may require a large number of quantization
levels, yielding L-systems with hundreds of symbols and productions.
Consequently, model specification becomes difficult, and the mathematical
beauty of L-systems is lost.
In order to solve similar problems, Lindenmayer proposed that numerical
parameters be associated with L-system symbols [83]. He illustrated
this idea by referring to the continuous development of branching
structures and diffusion of chemical compounds in a nonbranching filament
of Anabaena catenula.


The following is an example of its application:

starting string: A
p1: A F(1)[+A][-A]
P2: F(s) F(s*R)



which I think is basically trying to say

F(s) = move forwar a step of length s > 0.


Thanks again,

Mateo

BTW
sorry about the weird interruption to the text. copy paste functionality misbehaviour
m

Hi Mateo,

I'm not sure I get what you are trying to say. Have you tried the examples above? I isolated few parameters so you can grow the system in size and step length. I also isolated the L-System definition (variables, Constants, Rules, etc.), so you can use the model to create your own system if you wish.

in 7.0030 version of grasshopper this def throws a critical error that causes the grasshopper canvas to go red. any chance you can update for 7.0030

I was wondering if there's a way to use the fractal plants logic bt instead have the branches be curves instead of orth0gonal lines.

Not sure what you need.  Can you show an image or an example of what you want to get?

Sorry I would like to change my question. Similar to this photo I want the L-system to create a layering effect that begins to create a density. Also is there a way to have the L-System to branch out in multiple directions like in the photo above? Sorry for the loaded question hope it's not too much to ask. Thank You

I've been trying to tell the script to start the branching at a point, but I've been failing miserably. Could you possibly post a script that I could follow? Thank you

Hi Nicole,

I posted another example under the fractal tree (above) with dynamic angle control hooked to a slider.  That should help.