File:Chebyshev response.png
Chebyshev_response.png (732 × 527 pixels, file size: 34 KB, MIME type: image/png)
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Summary
[edit]DescriptionChebyshev response.png |
English: The frequency response of a Chebyshev pass- through type I fourth-order filter. |
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Source | Own work | ||||||||
Author | Pfalstad | ||||||||
Permission (Reusing this file) |
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Other versions | This image, as well as the following text, is derived from Image:Butterworth_response.png. |
Generated in gnuplot with the following script (save as cheby.plt and then open in gnuplot):
Then I opened the cheby.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 cheby.ps using the Mac Preview App, and used SnapNDrag to save the useful part of the image to a file.
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Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 05:10, 18 September 2012 | 732 × 527 (34 KB) | OgreBot (talk | contribs) | (BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2006-08-20 21:16:33 by PAR | |
00:39, 8 December 2005 | 732 × 527 (29 KB) | Severino666~commonswiki (talk | contribs) | This image, as well as the following text, is derived from Image:Butterworth_response.png. Generated in gnuplot with the following script (save as cheby.plt and then open in gnuplot): <pre> set samples 2001 set terminal postscript enh |
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