File:Nielsen's spiral.png
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Size of this preview: 800 × 506 pixels. Other resolutions: 320 × 203 pixels | 640 × 405 pixels | 951 × 602 pixels.
Original file (951 × 602 pixels, file size: 8 KB, MIME type: image/png)
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Summary
[edit]Plot of Nielsen's spiral, also known as the sici spiral.
This picture was created by Jitse Niesen using the following Matlab code:
ts = linspace(0.8, 30, 1000); xs = 1/2i * (expint(ts*1i) - expint(-ts*1i)); % sine integral ys = -1/2 * (expint(ts*1i) + expint(-ts*1i)); % cosine integral plot(xs,ys, 'LineWidth', 2); axis equal; axis off; print -dpng 'nielsen_tmp.png'; system('convert -trim -bordercolor white -border 10 +repage nielsen_tmp.png nielsen.png');
Licensing
[edit]Public domainPublic domainfalsefalse |
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/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 05:12, 4 October 2006 | 951 × 602 (8 KB) | Jitse Niesen (talk | contribs) | Plot of Nielsen's spiral, created by ~~~ using Matlab |
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