File:Amoeba of p=w-2z-1.png
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Summary edit
DescriptionAmoeba of p=w-2z-1.png | 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 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. |
Source code (MATLAB) edit
% 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')
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 04:15, 9 March 2007 | 1,479 × 1,483 (24 KB) | Oleg Alexandrov (talk | contribs) | ||
01:58, 11 January 2007 | 514 × 531 (23 KB) | Oleg Alexandrov (talk | contribs) |
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