User talk:Cmglee/archive2022

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Topics started in 2022

Request about SVGedit.js[edit]

Hello!

Thanks for your fork of Rillke's SVGedit.js, it's really an improvement. I would like to see if you would be intrested in adding yet another feature, namely an automatic resizer. With the push of a button the height and width would be increased to about 100.000 pixels. The dimensions can be fetched from https://wcam-bot.toolforge.org/. The reason for this feature is obviously to increase the nominal size of SVGs that are supersmall. I can't program unfortunately so that's why I'm asking you :).Jonteemil (talk) 05:56, 3 January 2022 (UTC)[reply]

@Jonteemil: Thanks and you're welcome. I'd like to help but am unfamiliar with writing wmflabs tools. Some editors who may have that knowledge are @JoKalliauer: , @Redrose64: and @Slashme: . As far as I know, SVG dimensions are used only when it is
  1. Directly viewed in a browser (not as an Rsvg thumbnail)
  2. Previewed in the commons:commons SVG Checker
  3. Previewed in the user:Rillke/SVGedit.js tool
When used as a thumbnail, the width and/or height can be specified. Is that sufficient for your needs? Cheers, cmɢʟee ⋅τaʟκ 12:36, 4 January 2022 (UTC)[reply]
Yes, you are correct. You can change the size of an SVG when you use it. I still think the file pages themselves look so bad when you can't see what the SVGs depict. See for example File:GrayCircle.svg, or rather se how you can't see.Jonteemil (talk) 13:37, 6 January 2022 (UTC)[reply]
Good point, but do you have statistics on roughly how many files are affected, to gauge whether it's worth developing this tool? May I suggest creating a (hidden) category to tag any such files found, and in a few months see how many there are? If it's just a handful, it's likely quicker to do it manually. cmɢʟee ⋅τaʟκ 17:18, 6 January 2022 (UTC)[reply]

File:Comparison optical telescope primary mirrors.svg[edit]

Updated JWST and basketball court

The image in your File:Comparison optical telescope primary mirrors.svg is widely circulated and much appreciated these days after the launch of the James Webb Space Telescope.

Here are some minor suggestions from various people -

  1. Update the basketball court markings to reflect the new rectangular key area adopted by FIBA since 2010. https://en.wikipedia.org/wiki/Key_(basketball)
  2. Color the James Webb Space Telescope golden.


Thanks

@SN2020tlf: Thanks for your note. Great idea to update the basketball court markings. I'll do it this weekend. Re the JWST colour, I've previously assigned space telescopes shades of grey to distinguish them from terrestrial ones. I'll make it black as it's been launched.
Are there any other changes to be done?
Incidentally, if you think it relevant, would you like to nominate it for NASA's Astronomy Picture of the Day to accompany File:Nucleosynthesis_periodic_table.svg after I've fixed the above? Thanks, cmɢʟee ⋅τaʟκ 01:03, 15 January 2022 (UTC)[reply]
@Cmglee: Thanks for making the update. I would love to see this graphic featured on APOD, so would many others in the community. The APOD link you posted above seems to be for making submissions, not for nominations. I cannot find a link for nominating images. Have you tried submitting it yourself? I am confident that the APOD editors will gladly accept this graphic. SN2020tlf (talk) 01:43, 20 January 2022 (UTC)[reply]

✓ Done

Proposed change to image last edited by you[edit]

I created Commons:Graphic Lab/Illustration workshop#Minor change to tessaract-construction SVG before realizing I could just ask the last person who edited the image, which is you. Would you like to make the change I suggested? - dcljr (talk) 06:49, 5 February 2022 (UTC)[reply]

Hi @Dcljr, Well spotted. I see Mrmw has already done so. Cheers, cmɢʟee ⋅τaʟκ

Incorrect Image[edit]

Good morning mr Cmglee, you said me (--Ming mm (talk) 10:52, 15 February 2022 (UTC)) if i have some question or to suggest anything. I saw an incorrect image on complex logarithm, File:Complex_log_domain.svg and i report it in the discussion page, but i don't know if it's the correct method, so i write you too, to be sure an expert be aware. Thank you for your attention.[reply]
--Ming mm (talk) 10:52, 15 February 2022 (UTC)[reply]

Thanks for your message, @Ming mm: I'm no expert on complex logarithms, but I'll reply with what I can on its talk page. Cheers, cmɢʟee ⋅τaʟκ 22:42, 16 February 2022 (UTC)[reply]
I see now your message, I'll reply on its talk page
See you soon --Ming mm (talk) 16:29, 22 February 2022 (UTC)[reply]

Data in File:TRAPPIST-1 system to scale.svg[edit]

Greetings, can I ask where the data on the disposition of the planets in File:TRAPPIST-1 system to scale.svg come from? Like, did you take the distances between the star and its planet from Wikipedia? Jo-Jo Eumerus (talk) 11:04, 30 April 2022 (UTC)[reply]

Hi @Jo-Jo Eumerus: , the values are from the table in en:TRAPPIST-1#Planetary_system (in turn referenced to Agol et al. 2021, Grimm et al. 2018, and Delrez et al. 2018), putting the centres of the discs at the distances in the table. Cheers, cmɢʟee ⋅τaʟκ 06:18, 5 May 2022 (UTC)[reply]

Wikimania 2022[edit]

Hi cmglee. I hope 2022 is treating you well. Shall we try to organise an in-person Wikimania local meetup again this year, say on Sunday 14th August? Feel free to reply by email if you'd prefer to keep arrangements private until plans are confirmed. Deryck Chan (talk) 16:16, 8 May 2022 (UTC)[reply]

@Deryck Chan: Hi Deryck, Yes, thanks, and you too. Sure, sounds a great idea. I'd be keen to host another Wikidata photo-walk. Are you planning to hold some talks? I can do more illustration and/or photography ones, though don't know how many are interested. Cheers, cmɢʟee ⋅τaʟκ 04:00, 9 May 2022 (UTC)[reply]
I'll be delighted to go on a photo-walk, having missed last year's...! I don't think I have anything particularly inspiring to say this year and might just tune in to the main conference in listening mode. Deryck Chan (talk) 13:54, 11 May 2022 (UTC)[reply]

Magic knight's tour[edit]

CMGLee's diagram captioned "Euler's semimagic square ..." (which is reproduced on the Knight's Tour page in Wikipedia) should be captioned "Beverley's semimagic square ..." since it was published by William Beverley in 1848, long after Euler was dead. The attribution of this tour to Euler is a common error, repeated in many sources. See https://www.mayhematics.com/t/1d.htm for the accurate history. GPJ (talk) 18:09, 15 June 2022 (UTC)[reply]

@GPJ: Thanks for your feedback. I'm, however, not an authority in this area and so am unable to evaluate which version is correct. Could you please bring this up in en:talk:knight's tour to see if anyone else has thoughts on it? Thanks, cmɢʟee ⋅τaʟκ 19:15, 15 June 2022 (UTC)[reply]

File:Durstenfeld shuffle.svg[edit]

Good work on a clear diagram here. I wonder if a genuinely garbled example (ABCDE becoming BCDAE) might be more to the point, though, given that the shuffle is only ever used to randomise a sequence? Pseudorandom numbers could get you deliberately from one word to its anagram, given the right seed, but this would be an unusual application of it. Lord Belbury (talk) 17:40, 1 July 2022 (UTC)[reply]

@Lord Belbury: thanks! I can't deny that I picked the order to showcase some clever anagrams. It's important, however, to have some letters not shuffled to show what happens when the random number is the last one of each step. Regardless, I think picking a meaningful set of distinct letters makes it more appealing and absorbing to the reader than just e.g. ABCDE. Cheers, cmɢʟee ⋅τaʟκ 23:48, 1 July 2022 (UTC)[reply]
File:Euler knight tour semimagic square.svg has been listed at Commons:Deletion requests so that the community can discuss whether it should be kept or not. We would appreciate it if you could go to voice your opinion about this at its entry.

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Gpjelliss (talk) 18:44, 1 August 2022 (UTC)[reply]

Baye's Theorem Interpretations[edit]

I can't believe you've done this. 2A02:C7F:E53B:4E00:C27:5EF8:B691:E75E 15:28, 28 September 2022 (UTC)[reply]

79.201.247.211 21:02, 28 September 2022 (UTC)[reply]
In what way is it unbelievable?
I suppose, like most people, I sometimes have a weird sense of humour, but it's not malicious!
cmɢʟee ⋅τaʟκ 00:44, 29 September 2022 (UTC)[reply]
you added amongus to an actual wikipedia page about math and called it a "geometric interpretation of Bayes' Theorem"
I mean ik its correct and works but you took the time and energy to do this for a meme or smthn whyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy Efto (talk) 19:59, 13 December 2022 (UTC)[reply]
There are two separate concepts at play:
  1. It's a geometric interpretation as the black-shaded fractions of the respective rectangles shows that one can derive the shaded fraction of the whole (4-cell) rectangle from two directions, explaining how Bayes' theorem's terms.
  2. Formalising the subconscious process used in deducing guilt in Among Us is a superb use-case of Bayes' theorem.
By the way, I realise it's part of the Among Us culture, but editors would take comments more seriously if they use standard language instead of repeating letters.
Cheers.
cmɢʟee ⋅τaʟκ 15:55, 15 December 2022 (UTC)[reply]

N-Sphere - Volume & Surface Graph Minor Additions[edit]

I wanted to ask you if the excellent illustration you've provided was meant to display positive dimensions only? If so, the starting point of zero you've shown for the surface graph should probably be removed since it is S(-1). If you're open to adding some negative dimensions to this graphic, I'd like to assist you by providing you the data point values and labels for 5 negative dimensions which should be enough to balance out the 15 positive dimensions you are currently displaying. Let me know..

Thanks Dimensionologist (talk) 00:17, 29 September 2022 (UTC)[reply]

Hi @Dimensionologist: thanks for your message and compliment. I originally intended it to show positive dimensions only but mislabelled it as n-sphere: as on en:Talk:N-sphere#The_illustration_"graphs_of_volumes_and_surface_areas_of_the_n-sphere_in_(n+1)-dimensional_space"_is_off_by_1 someone corrected the caption to n-ball, so I think the off-by-one error is fixed. I'm unfamiliar with negative dimensions and unsure if it would make the diagram even more cluttered: someone already thought it was "truly awful"! Would you know if the addition will be useful? Cheers, cmɢʟee ⋅τaʟκ 00:57, 29 September 2022 (UTC)[reply]
Well...Yes! It would be extremely useful from my point of view. I do not believe it will become too cluttered by simply adding 5 lines for the dimensions to the left of what is labeled Dimension 0. There is a major divergence that takes place at Dimension -2 which will be beneficial for those interested in this subject. Up until then, all the negative dimensions occupy pretty much the same line. I appreciate that you're open to the potential change and I'd like to ask that if the first point on the surface graph is to remain, we should correct it's value to .5 from the current 0. The formula for S(-1) is: 1/2 x Pi^0 x R^-1 = .5 The associated label would then be: Pi^0 /2.
I have all the other information: values, labels, etc. you would need to plot the remaining 5 negative dimensions and I am happy to provide them.
Thanks for the quick response. 47.144.233.58 03:56, 29 September 2022 (UTC)[reply]
@Dimensionologist: In that case, please send the values (and if possible, a reference in case someone wants it) and I'll try to update the graph this weekend. Cheers, cmɢʟee ⋅τaʟκ 19:35, 30 September 2022 (UTC)[reply]
Sounds great. Below are the: values, labels and formulas for each. The best reference I can find is a cross-check provided in the Recurrences section of the same N-Sphere article in Wikipedia. It states, "...the surface area Sn+1 of the sphere in n + 2 dimensions is exactly 2πR times the volume Vn enclosed by the sphere in n dimensions." I am providing all the information from our familiar 3rd Dimension down to the -6 Dimension which will allow anyone who's interested to cross-check the formulas with basic algebra skills. I have also grouped the dimensions by their Pi exponent for clarity and all values are for a radius of 1.
Here they are:
Dimension Value Label (Formula) Dimension Value Label (Formula)
3 Volume 4.188790205 4Pi/3 (4/3 x Pi X R^3) 3 Surface 12.56637061 4Pi (4 x Pi x R^2)
2 Volume 3.141592654 Pi (Pi x R^2) 2 Surface 6.283185307 2Pi (2 x Pi x R^1)
1 Volume 2 2Pi^0 (2 x Pi^0 x R^1) 1 Surface 2 2Pi^0 (2 x PI^0 x R^0)
0 Volume 1 Pi^0 (Pi^0 x R^0) 0 Surface 0.5 Pi^0 /2 (1/2 x Pi^0 x R^-1)
-1 Volume 0.318309886 Pi^-1 (Pi^-1 x R^-1) -1 Surface 0.079577472 Pi^-1 /4 (1/4 x Pi^-1 x R^-2)
-2 Volume 0.079577472 Pi^-1 /4 (1/4 x Pi^-1 x R^-2) -2 Surface 0.009947184 Pi^-1 /32 (1/32 x Pi^-1 x R^-3)
-3 Volume 0.012665148 Pi^-2 /8 (1/8 x Pi^-2 x R^-3) -3 Surface 0.000791572 Pi^-2 /128 (1/128 X Pi^-2 X R^-4)
-4 Volume 0.001583143 PI^-2 /64 (1/64 x Pi^-2 X R^-4) -4 Surface 4.94732E-05 Pi^-2 /2048 (1/2048 x Pi^-2 x R^-5)
-5 Volume 0.000125983 PI^-3 /256 (1/256 x Pi^-3 x R^-5) -5 Surface 1.96848E-06 Pi^-3 /16384 (1/16384 x Pi^-3 x R^-6)
-6 Volume 7.87391E-06 Pi^-3 /4096 (1/4096 X Pi^-3 x R^-6) -6 Surface 6.15149E-08 Pi^-3 /524288 (1/524288 x Pi^-3 x R^-7)
Thanks for the effort in making the changes. Dimensionologist (talk) 02:17, 1 October 2022 (UTC)[reply]
Thanks for the values, @Dimensionologist: hope you don't mind my formatting it for legibility. Cheers, cmɢʟee ⋅τaʟκ 23:36, 2 October 2022 (UTC)[reply]
P.S. I found that my Python code embedded in calculates the values using the formulas
v = pi**(n*0.5)  /gamma(n*0.5+1)
s = pi**(n*0.5)*2/gamma(n*0.5  )
It doesn't handle gamma of negative numbers. Do you have an alternative formula to use for negative arguments (I'd rather calculate the values than hardcode them).
The new formatting looks great! Thanks very much. The following 8 formulas can be used for any positive radius in any dimension. Choose first if the dimension is positive or negative, then if the dimension is odd or even, and finally if you want surface or volume. Use the following method to calculate what Group the Dimension is in: To calculate the Group for negative dimensions, divide the absolute value of the dimension by 2, round up the result if the starting dimension is odd, and then multiply the result by -1. For positive dimensions, divide the dimension by 2 and truncate the result if the starting dimension is odd. All values for Groups and Dimensions should be integers and not fractions. (Group =G & Dimension = D) (Example: Group 0 consists of Dimension 0 & 1)
Positive Dimensions/Groups
a) Even Dimension - Surface = 2/(G-1!) x PI^(G) x R^(D-1)
b) Even Dimension – Volume = 1/(G!) x PI^G x R^D
c) Odd Dimension - Surface = 2^(G+1) /(D-2!!) x PI^G x R^(D)
d) Odd Dimension – Volume = 2^(G+1) /(D!!) x PI^G x R^D
Negative Dimensions/Groups
a) Even Dimension – Surface = 1 /2^(((G-1)^2)-G) x PI^G x R^(D-1)
b) Even Dimension – Volume = 1 /2^((G^2)+G) x PI^G x R^D
c) Odd Dimension – Surface = 1 /2^(((G-1)^2)-2) x PI^G x R^D
d) Odd Dimension – Volume = 1 /2^((G^2)-1) x PI^G x R^D
I know this is cumbersome, but I'm not aware of any other solutions. You've hit the problem on the head in that the Gamma Function cannot be used with negative numbers and probably explains why there is a dearth of information available for negative dimensions.
Thanks again for the help... Dimensionologist (talk) 23:51, 3 October 2022 (UTC)[reply]
Hi @Dimensionologist, I tried to add your formulae to my code today and found that my code calculates the volume and surface area for fractional dimensions in between the labelled points: the curves are not simply smooth interpolations. Your formulae uses double factorials, which I understand applies only to integers. Do you have ones for any real number?
Additionally, the values in the table seem to monotonically decrease towards 0 as the dimension tends to −∞. What did you mean by "There is a major divergence that takes place at Dimension -2"? Cheers, cmɢʟee ⋅τaʟκ 00:07, 13 October 2022 (UTC)[reply]
Nice to hear back from you. The ones I've provided are the only formulae I have. The factorials only apply to the positive dimensions and not the the negative ones. As for the "major divergence", the values are all very small but at dimension -2 for volume and dimension -1 for surface, they are the same number and then split apart as they approach the positive dimensions. Calling it a major divergence was probably not the best choice of words, although it is very significant. Sorry for the misunderstanding. Thanks. 69.75.73.146 19:48, 13 October 2022 (UTC)[reply]
I just though I'd check in on the status of changing your graph to show some of the negative dimensions. Let me know... Thanks. Dimensionologist (talk) 21:30, 24 November 2022 (UTC)[reply]
Thanks for getting back to me. As I explained above, the formula (and your values) gives only values at integer dimensions. My script calculates values at fractional dimensions to be able to plot the graph. If you could give me a formula that works for fractional values, I can modify my script. Even better, if you understand Python, download the SVG file, delete the first line and run it as a Python script. Let me know if that's possible. Cheers, cmɢʟee ⋅τaʟκ 15:58, 15 December 2022 (UTC)[reply]
Sorry...I don't know anything about Python or the SVG script and, unfortunately, only the values for the negative integer dimensions are available at this time. The reason being is that the positive dimensions appear to be built on factorials, so the gamma function works just fine in calculating all the fractional dimensions in between the positive integers. However, the negative dimensions appear to be built on reciprocals, so the gamma function does not work. It's been difficult in just getting the correct dots for the negative dimensions on a graph, let alone filling in the spaces between them. Personally, I'm a little miffed at the widespread use of the gamma function in these volume/surface calculations. Its use is a lot more widespread and easier than using the factorial equations, but that same use may be preventing others from doing work with the negative dimensions using reciprocals, because there is no known equivalent function. The problem we're facing in getting your fine graph changed is an excellent example of this phenomena. If we are at a standstill here with your graph, there is another illustration just above yours that has not been modified in about 10 years and is incomplete for the recurrences it shows. Would you be able to modify that one if I provided you with the updated information? Let me know and thanks so much for your effort so far. Dimensionologist (talk) 21:20, 16 December 2022 (UTC)[reply]
Sorry...it's located just below yours. Dimensionologist (talk) 21:22, 16 December 2022 (UTC)[reply]

File:Metamerism spectrum example.svg[edit]

Hi Cmglee, thanks for the very nice illustration graph on the metamerism. I am just wondering whether you have the source of the data or the simulations that back up this figure. Or did you do the calculations/measurements yourself? I would like to cite this figure in my writings. Smilingbookmark (talk) 15:40, 10 November 2022 (UTC)[reply]

Thanks, Smilingbookmark. It was from a training class I attended but I can't find the web page with the graph now. The eye response curves are from https://commons.wikimedia.org/wiki/File:Cones_SMJ2_E.svg . Cheers, cmɢʟee ⋅τaʟκ 14:12, 11 November 2022 (UTC)[reply]
Thanks for your reply. Smilingbookmark (talk) 12:53, 15 November 2022 (UTC)[reply]

Thanks[edit]

Thanks for the image Voyager_2_velocity_vs_distance_from_sun.svg. Very nicely done :) Jayanta Sen (talk) 19:35, 15 November 2022 (UTC)[reply]

Thanks, @Jayanta Sen: , and you're welcome! cmɢʟee ⋅τaʟκ 22:32, 15 November 2022 (UTC)[reply]

Copyright status: File:Eclipse shadows.svg[edit]

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periodic tabel[edit]

PDF poster

Hi, I saw on twitter the periodic tabel you made in which you included how every element was created. Is possible to get a file (to print) or poster to hang in my clasroom. I teach physic and very impressed about the way you made it. Greetings Henk 82.170.126.156 10:13, 20 December 2022 (UTC)[reply]

Good news, Henk. I've made you a PDF suitable for printing as a poster on ISO 216 international paper sizes. Thank you for the interest in my work and compliment, and good luck in using it in your classes! Cheers, cmɢʟee ⋅τaʟκ 16:39, 20 December 2022 (UTC)[reply]

Copyright status: File:Nucleosynthesis periodic table.pdf

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Russss (talk) 15:13, 22 December 2022 (UTC)[reply]

@Russss: I've copied the licence from File:Thames_Estuary_airports_proposed_locations.gif. cmɢʟee ⋅τaʟκ 22:09, 22 December 2022 (UTC)[reply]

Copyright violations[edit]

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Hello Cmglee.

You have uploaded one or more files that are copyright violations. You have done so despite requests from editors not to do so, and despite their instructions. See Commons:Licensing for the copyright policy on Wikimedia Commons. You may also find Commons:Copyright rules by subject matter useful.

This is your last warning. The next time you upload a file that violates copyright, you will be blocked. Please leave me a message if you have further questions.

  — 🇺🇦Jeff G. please ping or talk to me🇺🇦 15:45, 25 December 2022 (UTC)[reply]

@Jeff G.: This is a totally unfair allegation. I haven't knowingly breached copyright despite the warnings above:
  1. File:Eclipse_shadows.svg – A failure in the JavaScript of the old form caused the licence wikitext to not be saved when the image was uploaded.
  2. File:Nucleosynthesis_periodic_table.pdf – As above.
  3. File:Thames_Estuary_airports_proposed_locations_SS_Richard_Montgomery.png – When I uploaded it in 2012, I wasn't familiar with licensing and uploaded it as {{Cc-by-3.0}} when I should have used {{OS OpenData}} which the map I derived from had.

In all cases, I corrected the issues within a few days. Threatening "The next time you upload a file that violates copyright, you will be blocked" is unjustified. Mistakes, especially ones due to technical issues as in the first two files happen and blocking (or even threatening) productive users who have contributed over 2000 images will lead to them abandoning Wikimedia and overall loss of quality content generation. A more productive action is to ensure that the JavaScript never fails or that the file defaults to a sensible licence. cmɢʟee ⋅τaʟκ 16:58, 25 December 2022 (UTC)[reply]

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2O21 2O22 2O23 2O24