File:Syntractrix a=1.5 b=1.png
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Size of this preview: 800 × 219 pixels. Other resolutions: 320 × 88 pixels | 640 × 175 pixels | 2,025 × 554 pixels.
Original file (2,025 × 554 pixels, file size: 25 KB, MIME type: image/png)
| Description | Illustration of Syntractrix |
| Date | (UTC) |
| Source | self-made with en:Matlab |
| Author | Oleg Alexandrov |
This diagram was created with MATLAB.
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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. |
Source code (MATLAB)
% Syntractrix illustration
function main()
% linewidth and font size
lw= 6;
fs = 20;
% colors
red=[0.867 0.06 0.14];
blue = [0, 129, 205]/256;
green = [0, 200, 70]/256;
black = [0, 0, 0];
white = 0.99*[1, 1, 1];
N=5000; % number of points (don't make it big, code will be slow)
a = 1.5; b = 1;
Lx1 = -0.3; Lx2 = 5; Ly1 = -b; Ly2 = b;
bd = 0.1;
figure(1); clf;
hold on; axis equal; grid on;
set(gca, 'fontsize', fs, 'linewidth', lw/4);
Y = linspace(eps, Ly2, N);
X = -sqrt(b^2-Y.^2) + a*log((b+sqrt(b^2-Y.^2))./Y);
X(1) = Lx2;
figure(1); plot(X, Y, 'color', red, 'linewidth', lw/2);
figure(1); axis equal; axis([Lx1-bd Lx2 -bd b+bd]);
saveas(gcf, sprintf('Syntractrix_a=%0.2g_b=%0.2g.eps', a, b), 'psc2')
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This math image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with
{{vector version available|new image name}}.
It is recommended to name the SVG file “Syntractrix a=1.5 b=1.svg”—then the template Vector version available (or Vva) does not need the new image name parameter. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:58, 19 July 2007 | | 2,025 × 554 (25 KB) | wikimediacommons>Oleg Alexandrov | {{Information |Description=Illustration of Syntractrix |Source=self-made with en:Matlab |Date=17:24, 14 July 2007 (UTC) |Author= Oleg Alexandrov }} {{PD-self}} ==Source code (MATLAB)== <pre> <nowiki> % |
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