File:Amoeba of p=w-2z-1.png
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Original file (1,479 × 1,483 pixels, file size: 24 KB, MIME type: image/png)
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Summary
| Description | The amoeba of P(z,w)=w-2z-1 |
| Date | 11 January 2007 (original upload date) |
| Source | Own work |
| Author | Oleg Alexandrov |
|
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Licensing
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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)
% a simple code to draw the amoeba of p(z, w) = w-2z-1.
a=0; b=50; h=0.01;
R=h/2:h:b;
X=log(R);
Y=log(abs(2*R-1));
Z=log(abs(2*R+1));
figure(1); clf; hold on; axis equal; axis off;
XX=X;
YY=Y;
% append to (X, Y) the pair (X, Z), traveled in reverse (so that we can use fill)
n=length(Z)
for i=1:n
XX=[XX X(n-i+1)];
YY=[YY Z(n-i+1)];
end
blue = [0, 0, 1];
H=fill (XX, YY, blue); set(H, 'EdgeColor', blue);
saveas(gcf, 'amoeba of p=w-2z-1.eps', 'psc2')
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:15, 9 March 2007 | | 1,479 × 1,483 (24 KB) | Oleg Alexandrov | |
| 01:58, 11 January 2007 |  | 514 × 531 (23 KB) | Oleg Alexandrov |
File usage
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