File:Butterworth poles 4.svg
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Size of this PNG preview of this SVG file: 428 × 599 pixels. Other resolutions: 171 × 240 pixels | 343 × 480 pixels | 428 × 600 pixels | 548 × 768 pixels | 731 × 1,024 pixels | 512 × 717 pixels.
Original file (SVG file, nominally 512 × 717 pixels, file size: 9 KB)
Summary[edit]
Description |
English: pole plot of a 4th order Butterworth filter function
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Date | |
Source | Own work |
Author | Fcorthay |
Source code[edit]
This graphics has been realized with the help of the following Octave script:
order = 4; pointNb = 100; axesLength = 1.25; textOffset = 0.05; angle = linspace(pi/2, 3*pi/2, pointNb); poleAngles = pi/2 + pi * [1:order]/order - pi/(2*order); poles = cos(poleAngles) + i * sin(poleAngles); figure(1); plot(cos(angle), sin(angle)); hold on; plot([-axesLength, axesLength-1], [0, 0], 'k'); plot([0, 0], [-axesLength, axesLength], 'k'); plot(poles, 'xr'); hold off; axis("equal", "off"); text(axesLength-1+textOffset, textOffset, "re(s)"); text(textOffset, axesLength+textOffset, "im(s)"); print -dsvg butterworth_poles_4.svg
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following license:
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:52, 3 August 2011 | 512 × 717 (9 KB) | Fcorthay (talk | contribs) |
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