File:Box or Vicsek Fractal 4-iterations.svg
Size of this PNG preview of this SVG file: 800 × 388 pixels. Other resolutions: 320 × 155 pixels | 640 × 311 pixels | 1,024 × 497 pixels | 1,280 × 621 pixels | 2,560 × 1,242 pixels | 1,154 × 560 pixels.
Original file (SVG file, nominally 1,154 × 560 pixels, file size: 39 KB)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
Four iterations of a "box fractal" or "Vicsek fractal", derived by iteratively replacing a square with a saltire or cross of five smaller squares on a 3-by-3 subgrid. Top: Four iterations of the saltire form of the fractal. Bottom: Four iterations of the cross form of the fractal. The second iteration is a form of the "cross crosslet" symbol of traditional heraldry. |
| Date | |
| Source |
Self-made graphic, converted from the following vector PostScript source code: %!
.5 dup scale/sq{3 mul exch 3 mul exch moveto 3 0 rlineto 0 3 rlineto -3 0
rlineto closepath fill}def/X{0 1 sq 1 1 sq 2 1 sq 1 0 sq 1 2 sq}def/T{0 0 sq
1 1 sq 2 2 sq 0 2 sq 2 0 sq}def/x{0 1 X1 1 1 X1 2 1 X1 1 0 X1 1 2 X1}def/t{0 0
T1 1 1 T1 2 2 T1 0 2 T1 2 0 T1}def/X1{9 mul exch 9 mul exch gsave translate X
grestore}def/T1{9 mul exch 9 mul exch gsave translate T grestore}def/X2{27 mul
exch 27 mul exch gsave translate x grestore}def/T2{27 mul exch 27 mul exch
gsave translate t grestore}def/xx{0 1 X2 1 1 X2 2 1 X2 1 0 X2 1 2 X2}def/tt{0
0 T2 1 1 T2 2 2 T2 0 2 T2 2 0 T2}def/X3{81 mul exch 81 mul exch gsave
translate xx grestore}def/T3{81 mul exch 81 mul exch gsave translate tt
grestore}def/sqq{/s exch def 1 .7 .8 setrgbcolor 0 0 moveto s 0 rlineto 0 s
rlineto s neg 0 rlineto closepath fill 0 setgray}def
gsave 10 10 translate 27 dup scale 9 sqq X 0 11 translate 9 sqq T grestore
gsave 307 10 translate 9 dup scale 27 sqq x 0 33 translate 27 sqq t grestore
gsave 604 10 translate 3 dup scale 81 sqq xx 0 99 translate 81 sqq tt grestore
gsave 901 10 translate 243 sqq 0 1 X3 1 1 X3 2 1 X3 1 0 X3 1 2 X3 0 297
translate 243 sqq 0 0 T3 1 1 T3 2 2 T3 0 2 T3 2 0 T3 grestore showpage
%EOF |
| Author | AnonMoos |
| Other versions |
For the fifth iteration of the cross variant, see File:Box fractal.svg:  |
Licensing
|
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:02, 5 June 2013 | | 1,154 × 560 (39 KB) | AnonMoos | reduce code size, eliminate hairline cracks in renderings |
| 08:11, 21 August 2009 |  | 1,154 × 560 (72 KB) | AnonMoos | Four iterations of a "box fractal" or "Vicsek fractal", derived by iteratively replacing a square with a saltire or cross of five smaller squares on a 3-by-3 subgrid. Top: Four iterations of the saltire form of the fractal. Bottom: Four iterations of t |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on el.wikipedia.org
- Usage on es.wikipedia.org
- Usage on fr.wikipedia.org
