File:Sierpinski triangle.svg

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Original file(SVG file, nominally 1,024 × 887 pixels, file size: 3 KB)

This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.

Summary

 
The SVG code is valid.
 
This plot was created with Matplotlib.

Source code

InfoField

Python code

from __future__ import division
import matplotlib.pyplot as plt
plt.figure()
plt.subplot(1,1,1)
plt.axis('off')

def drawBlue(p1,p2,p3):
  plt.fill([p1[0],p2[0],p3[0]],[p1[1],p2[1],p3[1]],facecolor='b',edgecolor='none')

def drawWhite(p1,p2,p3):
   plt.fill([p1[0],p2[0],p3[0]],[p1[1],p2[1],p3[1]],facecolor='w',edgecolor='none')

def midpoint(p1,p2):
  return ((p1[0]+p2[0])/2,(p1[1]+p2[1])/2)
def sierpinski(p1,p2,p3,repeat):
  drawWhite(midpoint(p1,p2),midpoint(p2,p3),midpoint(p3,p1))
  if (repeat <= 8):
    sierpinski(p1,midpoint(p1,p2),midpoint(p1,p3),repeat+1)
    sierpinski(p2,midpoint(p1,p2),midpoint(p2,p3),repeat+1)
    sierpinski(p3,midpoint(p1,p3),midpoint(p2,p3),repeat+1)

drawBlue((0,0),(7,0),(3.5,6.0621778265))

sierpinski((0,0),(7,0),(3.5,6.0621778265),0)

plt.show()

Licensing

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Beojan Stanislaus
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

Original upload log

The original description page was here. All following user names refer to en.wikipedia.

Transferred to Commons.

Upload date User Bytes Dimensions Comment
2007-10-21 06:40:53 Marco Polo 2976 1774×1536 typo
2007-10-21 06:39:47 Marco Polo 2976 1774×1536 Recursive algorithm for generation

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File history

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Date/TimeThumbnailDimensionsUserComment
current19:12, 3 March 2013Thumbnail for version as of 19:12, 3 March 20131,024 × 887 (3 KB)Perhelionrev: unnecessary excessive code, used original code

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