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File:Logarithmic spiral.svg

Original file ‎(SVG file, nominally 510 × 400 pixels, file size: 2 KB)

Captions

Captions

Logarithmic spiral.

Summary

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Description
English: Logarithmic spiral.
Français : Spirale logarithmique.
Italiano: Spirale logaritmica.
Deutsch: Logarithmische Spirale.
Date
Source

Own work

Made using gnuplot (script below), minor fixes in Inkscape. Reworked using cubic bézier curves.
Author Leafnode
Permission
(Reusing this file)		 public domain


This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Use cubic bézier curves instead of polygons.

Gnuplot script

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# Output to svg file:
set terminal svg size 1024 768
set output "logarithmic_spiral.svg"

# Same scale for both axes, half-size output:
set size ratio -1 0.5, 0.5

# More sample points to produce smoother picture:
set samples 480

# Axes in the center, no tick marks:
set zeroaxis
unset xtics
unset ytics
unset border
set polar

plot [-4*pi:4*pi] [-8:10] [-8:6] 1.19**t notitle

Licensing

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Public domain 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

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Date/TimeThumbnailDimensionsUserComment
current12:15, 21 August 2010Thumbnail for version as of 12:15, 21 August 2010510 × 400 (2 KB)Georg-Johann (talk | contribs)Use smooth curve with cubic béziers instead of polylines
05:47, 23 August 2009Thumbnail for version as of 05:47, 23 August 2009510 × 398 (8 KB)AnonMoos (talk | contribs)removing non-functional code, cropping margins
09:16, 5 May 2008Thumbnail for version as of 09:16, 5 May 2008600 × 480 (11 KB)Leafnode (talk | contribs)
09:13, 5 May 2008Thumbnail for version as of 09:13, 5 May 2008600 × 480 (9 KB)Leafnode (talk | contribs){{Information |Description=Logarithmic spiral |Source=własna praca |Date=5.05.2008 |Author= Leafnode |Permission=public domain |other_versions= }} Category:Gnuplot diagrams Category:Logarithmic spiral

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