File:Cauer response.png
Cauer_response.png (749 × 544 pixels, file size: 32 KB, MIME type: image/png)
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Summary
DescriptionCauer response.png | Cauer filter response; the amount of passband ripple is exaggerated to make it easy to see |
Date | 15 September 2005 (original upload date) |
Source | No machine-readable source provided. Own work assumed (based on copyright claims). |
Author | No machine-readable author provided. Pfalstad assumed (based on copyright claims). |
Instructions
See Wikipedia graph-making tips.
This image, as well as the following text, is derived from Image:Butterworth_response.png.
Generated in gnuplot with the following script (save as ellip.plt and then open in gnuplot):
Then I opened the ellip.ps file in a text editor to edit the line colors and linestyles, as per this description archive copy at the Wayback Machine. This avoids needing to open in proprietary software, and really isn't that difficult (especially if you don't know the commands in the proprietary software either). ;-) Identify the lines easily by their color (the arrow is currently magenta and I want it to be black. Ah, there is the entry with 1 0 1, red + blue = magenta) or by using the gnuplot linestyle−1. (For instance, gnuplot's linestyle 3 corresponds to the ps file's /LT2.) Then you can edit the colors and dashes by hand. I changed the original:
/LT0 { PL [] 1 0 0 DL } def /LT1 { PL [4 dl 2 dl] 0 1 0 DL } def /LT2 { PL [2 dl 3 dl] 0 0 1 DL } def /LT3 { PL [1 dl 1.5 dl] 1 0 1 DL } def
into this:
/LT0 { PL [] 0 0 1 DL } def /LT1 { PL [4 dl 2 dl] 0.5 0.5 0.5 DL } def /LT2 { PL [6 dl 3 dl] 0.3 0.3 1 DL } def /LT3 { PL [] 0 0 0 DL } def
Then I displayed the ellip.ps using the Mac Preview App, and used SnapNDrag to save the useful part of the image to a file.
Created by Pfalstad from Image:Butterworth_response.png.
Licensing
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | ||
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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Items portrayed in this file
depicts
15 September 2005
image/png
1b99f76b93101a1fb04a9fced2710b25eab446f0
33,242 byte
544 pixel
749 pixel
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 23:29, 15 September 2005 | 749 × 544 (32 KB) | Pfalstad | Cauer filter reponse |
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