Image:Complex numbers multiplication.png

La bildo estas kopiita de wikipedia:en. La originala priskribo estas:

Summary

Made by myself with matlab.

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Licensing

This image has been (or is hereby) released into the public domain by its author, Oleg Alexandrov at the English Wikipedia project. This applies worldwide. In case this is not legally possible: Oleg Alexandrov grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Source code

function main ()

% set up the plotting window
thickness=2.8; fs=30; d=0.005;
red=[1, 0, 0]; green=[0, 1, 0]; blue=[0, 0, 1];
figure(1); clf; hold on; axis equal; axis off; 
i=sqrt(-1);

z1=0; z2=1; z3=1+i;
draw_segment(z1, z2, red, thickness); 
draw_segment(z2, z3, green, thickness);
draw_segment(z3, z1, blue, thickness);

place_text_smartly (z1, fs, 5, d, '0'); 
place_text_smartly (z2, fs, 7, d, '1');
place_text_smartly (z3, fs, 1, d, 'A');

z1=0; z2=2*i; z3=2*i*(1+i);
draw_segment(z1, z2, red, thickness);
draw_segment(z2, z3, green, thickness);
draw_segment(z3, z1, blue, thickness);

place_text_smartly (z2, fs, 1, d, 'B');
place_text_smartly (z3, fs, 3, d, 'X');

saveas(gcf, 'Complex_numbers_multiplication.eps', 'psc2')

function draw_segment(z1, z2, color, thickness);
  plot( [real(z1), real(z2)], [imag(z1), imag(z2)], 'color', colour, 'linewidth', thickness );

function place_text_smartly (z, fs, pos, d, tx)
 p=cos(pi/4)+sqrt(-1)*sin(pi/4);
 z = z + p^pos * d * fs; 
 shiftx=0.0003;
 shifty=0.002;
 x = real (z); y=imag(z); 
 H=text(x+shiftx*fs, y+shifty*fs, tx); set(H, 'fontsize', fs, 'HorizontalAlignment', 'c', 'VerticalAlignment', 'c')

Historio de la dosiero

Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version.

Click on date to download the file or see the image uploaded on that date.

• (del) (cur) 03:44, 24 October 2005 . . en:User:Oleg_Alexandrov Oleg Alexandrov ( en:User_talk:Oleg_Alexandrov Talk) . . 242x180 (3520 bytes) (Made by myself with matlab. )