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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)

Summary

Description The amoeba of P(z,w)=w-2z-1
Date 11 January 2007 (original upload date)
Source Own work
Author Oleg Alexandrov

Licensing

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.

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')

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11 January 2007

image/png

3c27e647b024f5a4202fbb9e0b8fa74a2c2df139

24,330 byte

1,483 pixel

1,479 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current04:15, 9 March 2007Thumbnail for version as of 04:15, 9 March 20071,479 × 1,483 (24 KB)Oleg Alexandrov
01:58, 11 January 2007Thumbnail for version as of 01:58, 11 January 2007514 × 531 (23 KB)Oleg Alexandrov

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