Wikipedia:Featured picture candidates/Symmetry group

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Symmetry group[edit]

A tetrahedron can be placed in 12 distinct positions by rotation alone. These are illustrated above in the cycle graph format, along with the 180° edge (blue arrows) and 120° vertex (reddish arrows) rotations that permute the tetrahedron through the positions. The 12 rotations form the rotation (symmetry) group of the figure.
SVG version.

This image was created by User:Debivort, and is in the article Symmetry group. It clearly and beautifully illustrates the concept, and is highlighted appropriately to complement the mathematical concepts in the article.

  • Nominate and support. - HappyCamper 02:18, 18 August 2006 (UTC)[reply]
  • Strong Support Exactly what an FP should represent. This image is extremely helpful in understanding an abstract concept, and is eye catching as well. The article itself needs some clarification however. Image must be enlarged to max to see the rotation angles properly. Jeeb 02:36, 18 August 2006 (UTC)[reply]
  • Support. Very nice image! Would be even better as an SVG, though. mstroeck 07:57, 18 August 2006 (UTC)[reply]
  • Support. Good illustration overall, but of course, that PNG/SVG issue that everyone argues about is probably going to be debated again... (I personally did not take into account the filetype for my vote, otherwise it would be a weak support.) --Tewy 18:38, 18 August 2006 (UTC)[reply]
  • Support Enclyclopedic and well drawn. Resolution is enough that svg is not an issue(imo). HighInBC 21:09, 18 August 2006 (UTC)[reply]
  • Support. SVG would be nice, but PNG with an alpha channel is almost as sexy. —Keenan Pepper 09:13, 19 August 2006 (UTC)[reply]
  • Weak support. Very encyclopedic, but perhaps too complex. --Thelb4 11:10, 20 August 2006 (UTC)[reply]
  • Comment I don't get it...Nnfolz 18:39, 20 August 2006 (UTC)[reply]
    One way to interpret the image is as follows: Look at the rod, and see how it passes through the tetrahedron. Some of them go through an edge, while others go through a vertex. The arrows show what happens when the tetrahedron is rotated along the axis. --HappyCamper 19:48, 20 August 2006 (UTC)[reply]
  • Comment: I dare anyone to make one of these for the icosahedron! —Keenan Pepper 03:39, 21 August 2006 (UTC)[reply]
    Heh :-) It wouldn't be too bad I suppose, 60 representations wiht arrows and such. --HappyCamper 19:20, 21 August 2006 (UTC)[reply]
    Ack! Don't tempt me guys - I have a thesis to write! :P Debivort 23:58, 21 August 2006 (UTC)[reply]
  • Support Very eyecatching. The REAL Dyslexic Q-Thief 22:32, 22 August 2006 (UTC)[reply]
  • Oppose until an SVG source is made available. I like this diagram, but when another talented artist wants to improve on it (e.g. to make the rotation axes bigger), he or she will have to start from scratch because the source is not available. Cowpriest2 01:31, 24 August 2006 (UTC)[reply]
Just so happens I have had a SVG version sitting on my hard drive the whole time. Personally, I am suspicious of SVG because I have had trouble getting fonts to render correctly, but this one looks OK. Debivort 03:39, 24 August 2006 (UTC)[reply]
Excellent! However, it looks like there's no fonts, as I think you mentioned, so as far as FP goes, my support is for the PNG until the degree rotations are included (some are 180°, some are 120°). --Tewy 03:47, 24 August 2006 (UTC)[reply]
Oddly enough, the rotation angles don't render in the thumb, or on the image page[1], but if you load the image itself [2] they show, so the data is there. Maybe one of the SVG artists out there knows how to get them to show all the time? Also the SVG is significantly slower to load on my system - Firefox / Mac OSX. If there are tricks to improve it, please let me know. Debivort 04:00, 24 August 2006 (UTC)[reply]
About two thirds of the svg file is taken by an <i:pgf id="adobe_illustrator_pgf"> element. Apparently, this element has no effect on the image itself. There should be an option in Adobe Illustrator, called "Preserve Illustrator Editing Capabilities", that controls this element. Perhaps it could or even should be removed, considering that Adobe Illustrator is proprietary software. --Bernard 12:26, 24 August 2006 (UTC)[reply]
Here's a version with Illustrator compatibility disabled [3]. It seems to behave the exact same way though. It also includes embedded fonts which I expected to address the lettering issue, but hasn't. Debivort 15:56, 24 August 2006 (UTC)[reply]
Support. My initial concern has been addressed. Cowpriest2 05:29, 25 August 2006 (UTC)[reply]
w00t! :-) --HappyCamper 05:40, 25 August 2006 (UTC)[reply]

Promoted Image:Tetrahedral_group_2.svg Raven4x4x 08:57, 26 August 2006 (UTC)[reply]

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