Commons:Deletion requests/File:Aliasing-folding.svg

This deletion discussion is now closed. Please do not make any edits to this archive. You can read the deletion policy or ask a question at the Village pump. If the circumstances surrounding this file have changed in a notable manner, you may re-nominate this file or ask for it to be undeleted.

File:Aliasing-folding.svg

This file is a low-quality attempt to convert File:Aliasing-folding.png to type .svg. This file is not linked to by any articles. Bob K (talk) 19:19, 7 February 2019 (UTC)

• Oppose, as creator – it's not beautiful, but compared to the alternative file, it has several advantages:
  • SVG, not PNG
  • Simpler – not cluttered with many annotations or curved lines
  • Linear & interpretable – directly shows the map from original frequency to aliased frequency, rather than showing a spectrum.
  • Symmetry is obvious – this file is used to demonstrate a certain symmetry group, and it's easy to see from the simple diagram, without the distraction of details from frequency analysis.

  —Nils von Barth (nbarth) (talk) 00:02, 8 February 2019 (UTC)

Also Oppose. I believe I was hasty in my nomination, and I apologize. Also, before reading this, I just uploaded an SVG version of File:Aliasing-folding.png, which can be reverted if necessary, and I will understand. But I would like to point out that it is not depicting a spectrum (as erroneously stated above). For that we have File:Example of spectral "folding" caused by sampling a real-valued waveform.png. It is an example of one sinusoid and some its aliases. The solid red line is an example of how those aliases would change if the signal's frequency and amplitude are changed. The purpose of the curvature is to emphasize the arbitrariness of those changes. I believe the linearity of the previous figure is actually misleading or at least not clear what it means.

Let me assure you that I'm just trying to help, but revert if you're not convinced. Thank you for listening, and thank you for your contributions to Wikipedia.

--Bob K (talk) 13:41, 9 February 2019 (UTC)

OK, upon further thought, I finally understand the vertical scale of the linear version, which explains the linearity, and I have reverted my upload. What actually got me started down this dead-end path is that I converted File:Aliasing-folding.png to an SVG version and tried to upload to File:Aliasing-folding.svg, which resulted in a name conflict. So now I will upload to a different name.

--Bob K (talk) 14:00, 9 February 2019 (UTC)

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Kept: still in use. --JuTa 19:41, 15 June 2019 (UTC)