File talk:Complex numbers multiplication.png
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This file was marked as equivalent to w:Image:Complex_numbers_multiplication.png from en.wikipedia.org according to the NowCommons tag.
This is the edit history for that file's page:
- [2005-10-24T03:44:53Z] Oleg Alexandrov (Made by myself with matlab.)
- [2005-10-24T04:45:36Z] Oleg Alexandrov (source code)
- [2005-11-22T00:40:44Z] Oleg Alexandrov (changes to source code)
- [2006-10-12T02:05:27Z] Cinxx
Original title:
- Complex_numbers_multiplication.png
Upload log:
- (del) (cur) 03:44, 24 October 2005 . . Oleg Alexandrov (Talk | contribs) . . 242×180 (3,520 bytes) (Made by myself with matlab. )
Text:
== Summary ==
Made by myself with matlab.
== Licensing ==
{{PD-self}}
==Source code==
<pre><nowiki> 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', color, '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') </nowiki>
