Trees in nature

[Tglad]

The best example of the tree class would be a... tree I suppose-

As long as the branches aren't touching each other.

More generally you could think of a tree fractal as taking a big lump of clay then continually adding smaller lumps onto it, taking care to not to form any loops.
So this is a tree


And this


Even this stock photo of a rock is a tree... small lumps on bigger lumps-


Can you think of any other examples?

[Jameses]

The first couple divisions of a ferilized egg

[Power 8]

Hi
Great series of posts Tglad !

Here are some more "tree fractals": river deltas as seen from above in Google Earth:





Rivers = Horizontal trees

Also this image of the Sahara desert, a hybrid of trees and cluster?

[Tglad]

Nice examples, and the desert scene is, well, strange isn't it, never seen that before. Does look like a hybrid of tree and cluster, a cluster of trees, in 2d.
A normal hilly or mountain landscape is also a hybrid, tree+shell as its bumps+dips on larger bumps+dips.

I almost forgot our most famous tree fractal-

[cKleinhuis]

the romanescou is somehow like an inverted tree
a negative one

[Tglad]

Crashing waves are a tree fractal from underwater


Or if you think of the water as the fractal then it is a shell.

[visual.bermarte]

cumulonimbus-clouds?
Physical categories> http://en.wikipedia.org/wiki/Cloud
a cloud can't be a shell, no? never! but it could be a cluster..


check also fractus type   http://en.wikipedia.org/wiki/File:Lowcloudsymbols.gif

[Tglad]

Yes nice example.
I don't think a cloud would ever be a shell as shells are sort of recursively concave if that makes any sense,
but they could be a cluster, maybe like this
http://image36.webshots.com/36/2/94/10/2164294100064685528hrhvgt_fs.jpg
A cluster of trees.

They are also a cluster in the sense of being a cluster of water droplets.

[Jameses]

the romanescou is somehow like an inverted tree
a negative one

quit being so negative

[Xazo-Tak]

Shell fractals seem to be exactly the opposite to tree fractals, and vice versa.