User talk:Cmglee/archive2023

2O11	2O12	2O13	2O14	2O15	2O16	2O17	2O18	2O19	2O2O
2O21	2O22	2O23	2O24

Topics started in 2023

Add Covid-19 to File:Generation timeline.svg

You generation graph is really amazing. However, one thing I noticed is that the Covid-19 Pandemic is not on it. Should it be added, since it's a pretty major event? Gottfriedjacob5 (talk) 21:37, 2 January 2023 (UTC)

Thanks for the compliment, and good point, @Gottfriedjacob5: I concur, though as it's still ongoing, I don't have an end-date for it. What would you say is the start date? Cheers, cmɢʟee ⋅τaʟκ 23:06, 2 January 2023 (UTC)

I'd say 2020. That's when it was declared a pandemic. Gottfriedjacob5 (talk) 21:37, 4 January 2023 (UTC)

Hi @Gottfriedjacob5, As "the WHO ended its PHEIC declaration on 5 May 2023", I've added "COVID-19 pandemic" to the timeline as you requested. Cheers, cmɢʟee ⋅τaʟκ 07:28, 16 June 2023 (UTC)

I am wanting to reference your timeline in my book coming out this fall. Is there a way I can get a full high resolution image of the english version and a way to cite you outside of Wikipedia? Corieweathers (talk) 18:32, 28 August 2023 (UTC)

Please see the section #Military_Generations below. cmɢʟee ⋅τaʟκ 06:58, 30 August 2023 (UTC)

Moon phases

This image?

Moon phases are incorrect. This is not how we see standing on different latitudes. 58.111.117.29 18:22, 5 January 2023 (UTC)

Are you referring to File:Moon_phases_by_latitude.svg? If so, it has been discussed on en:Wikipedia:Reference_desk/Archives/Science/2019_July_14. Do you have an online reference that describes the correct behaviour? cmɢʟee ⋅τaʟκ 15:50, 6 January 2023 (UTC)

Scientific criticism

The spelling and grammer are atrocious, I assume that you are American "Not Indigenous"? 2A02:C7C:7845:FE00:3C61:FBE4:BD95:7155 09:10, 12 January 2023 (UTC)

I don't know what you're referring to – please elaborate. Regardless, Wikimedia editors come from all around the world, and it behoves us to tolerate one another's shortcomings. cmɢʟee ⋅τaʟκ 12:46, 12 January 2023 (UTC)

Elemental sourcing periodic table

Hello,

I was looking at this on APOD and on Wikipedia as well, and the versions I saw seemed to have 7 different colors on the chart itself, but only 6 on the key. Is that correct? There appear to be too greys, one very light, almost white and one darker. (Along with pink, green, blue, yellow, and purple.)

Thanks, LR 74.195.101.170 06:13, 16 January 2023 (UTC)

I see 7 colours in the legend

Hi,

Are you referring to File:nucleosynthesis_periodic_table.svg? I see 7 colours in the legend, the rightmost being an olive grey labelled "Human synthesis // No stable isotopes".

Cheers,
cmɢʟee ⋅τaʟκ 09:48, 16 January 2023 (UTC)

Constellations, equirectangular plot

Hi, I was working on an astronomy project with my daughters, and the coloring in your chart produced 21 Blue, 23 Green, 23 Red and 21 Yellow constellations. This asymmetry was/is intriguing. Anyways, we recolored Crux to blue and Sculptor to yellow in our project to maintain non-adjacency of colors, while keeping all colors to 22 each. They wanted me to share this feedback with you. Thanks. Pruthviraya (talk) 23:24, 25 February 2023 (UTC)

Thanks so much, @Pruthviraya: Sorry missed your message and have just seen it. Great observation! Cheers, cmɢʟee ⋅τaʟκ 00:42, 19 June 2023 (UTC)

Hi @Pruthviraya: I tried updating the chart today.

Though Crux could be successfully updated, changing Sculptor to yellow makes two adjacent regions have the same colour as the constellations map around the left and right edges and the adjacent Aquarius is already yellow. I couldn't find any green region which is not adjacent to a yellow region to use instead.

If you or your daughters can find another colouring, I'd love to hear about your solution.

Cheers,
cmɢʟee ⋅τaʟκ 16:50, 23 June 2023 (UTC)

P.S. I managed to contact Timwi (talk · contribs) who very kindly found me a new four-colouring. I've summarised the process on File_talk:Constellations,_equirectangular_plot.svg#New_four-colouring. cmɢʟee ⋅τaʟκ 19:17, 23 June 2023 (UTC)

compressing large SVG-files

regarding phab:T5593#8664998

• Sarang and you are experts in creating SVG-files manually, however if we talk about ≫1000 SVG-files, it will be necesarry to use automatic tools (e.g. as discribed at mw:Manual:Coding_conventions/SVG, such as User:SVGWorkaroundBot). Wikimedia Commons has about 2.5 Million SVG-files, most of them are neither large, nor embedded in Wikipedia.
• Sarang and Glrx seem to not support Mass-uploading of compressed files, which mostly I summerized in :c:Help:SVG_guidelines
• Many Category:Large_SVG_files have an included Tophographyimage, which can not be reasonable be vectorized/optimized, therfore I think phab:T208578 and phab:T134482 are essential for phab:T5593.

 — Johannes Kalliauer - Talk | Contributions 22:16, 3 March 2023 (UTC)

@JoKalliauer: Thanks for your explanation. I understand that the task is too large for a small group of editors, but as with Wikipedia, using the community makes it more manageable. Having a category like Category:Large_SVG_files (even better showing number of articles using them, or pageviews per month) lets us prioritise the files. Other than maps, for which I don't have a solution, I don't think there are many huge SVGs that are much viewed.

I agree that compression leading to obfuscation e.g. removing whitespace/formatting or using obscure identifiers is subobtimal. Most of the SVG generated by tools like Inkscape have redundant attributes and styles which can be safely removed or condensed into classes or symbols. I don't know how feasible it might be to ask contributors using Inkscape to save as Plain SVG to reduce the cruft.

One commenter mentioned serving the smaller of the rendered PNG and the SVG. It seems a great idea, though it makes editors uncertain which would be served.

Cheers,
cmɢʟee ⋅τaʟκ 16:35, 4 March 2023 (UTC)

P.S. Said category has several SVG with purely embedded photographs. I'll propose deleting them. cmɢʟee ⋅τaʟκ 16:40, 4 March 2023 (UTC)

File:Map of US minimum wage by state 2023.svg

File:Map of US minimum wage by state 2023.svg has been marked for speedy deletion. (Reason: Duplicate of File:Map of US minimum wage by state.svg. See discussion diff where the author of the *2023.svg map agrees that it can now be deleted.) Why not upload a picture of a plant, animal, or anything else which fits into our scope. You can contribute any media type you want, including but not limited to images, videos, music, and 3D models. Start uploading now! If you don't have anything to upload at the moment, why not take a look at our best images or best videos, sounds and 3D models. If you have any doubts/questions don't hesitate to visit our help desk.

User who nominated the file for deletion (Nominator) : Timeshifter.

I'm a computer program; please don't ask me questions but ask the user who nominated your file(s) for deletion or at our Help Desk. //Deletion Notification Bot 2 (talk) 18:38, 10 April 2023 (UTC)

Ok 50.110.100.4 18:50, 23 April 2023 (UTC)

File:Circulatory system SMIL.svg

Hello, Cmglee. Please provide the required reliable sources for File:Circulatory system SMIL.svg that you have uploaded. Thank you in advance! --TadejM ^(t/p) 17:32, 11 May 2023 (UTC)

File:Bayes theorem assassin.svg

File:Bayes theorem assassin.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. If you created this file, please note that the fact that it has been proposed for deletion does not necessarily mean that we do not value your kind contribution. It simply means that one person believes that there is some specific problem with it, such as a copyright issue. Please see Commons:But it's my own work! for a guide on how to address these issues. Please remember to respond to and – if appropriate – contradict the arguments supporting deletion. Arguments which focus on the nominator will not affect the result of the nomination. Thank you!

2600:8807:8080:D40:3864:504B:4E97:28B 18:24, 28 May 2023 (UTC)

Question on Hollow-face Image

Hi cmglee,

I'm currently in a lab in the University of Toronto and I am doing some research on perception and attention involving human gaze in virtual reality. A coworker of mine came across your hollow face image that you made on blender with a "housewife model" from sketchfab. We would love to use your model in our study as we believe it is a perfect fit. Are you able to send me your original blender file for your hollow-face? https://en.wikipedia.org/wiki/Hollow-Face_illusion#/media/File:Hollow_face_illusion.gif If not, could you let me know how you were able to create that image? Thank you! Jadeywadeyyy (talk) 18:29, 7 June 2023 (UTC)

Hi @Jadeywadeyyy: thanks for your interest in my work. Can you please email me using http://commons.wikimedia.org/wiki/Special:EmailUser/cmglee? Thanks, cmɢʟee ⋅τaʟκ 07:37, 8 June 2023 (UTC)

Generation timeline update

Hi there. On File:Generation timeline.svg, do you think we really need things like the world events listed? Because some would argue "Hey why isn't [such and such] event here" like the Gulf War for instance. I feel like it would be more concise to just have the generation names and birth years.

Also, it displays a "29 F8" error message on the sections where there's supposed to be a "/" (i.e. "Greatest/G.I. Generation"). 204.111.198.147 19:28, 14 June 2023 (UTC)

Thanks for bringing up the "29 F8" error message. It seems the new renderer no longer recognises the "big solidus" character, so I've replaced it with a normal slash.

The characteristics and names of some of the generations are greatly influenced by world events such as the Lost, Silent and G.I. generations. Hence, superimposing the world events helps the reader perceive the timeline better. I understand your concern that some may question which events should appear, but we can handle them case-by-case.

Cheers,
cmɢʟee ⋅τaʟκ 07:08, 16 June 2023 (UTC)

Okay. Now, should the War on Terror and Web 2.0 parts really be extending that far into the chart? It's been argued the GWOT, or at least the main portion, ended in 2021 (the National Defense Service Medal stopped being offered after December 2022). Also, Web3 started being discussed more around 2021, which some argue is the successor to Web 2.0.--204.111.198.147 20:41, 18 June 2023 (UTC)

Interesting perspective. As I don't have an expertise in this area, would you mind starting a discussion on file_talk:generation_timeline.svg to seek others' thoughts? Thanks, cmɢʟee ⋅τaʟκ 23:11, 18 June 2023 (UTC)

sus

Why did you put Among Us as an example in Bayes' theorem? — Preceding unsigned comment was added by 2600:4040:B178:1A00:40E2:5209:FAD:A2FB (talk) 23:53, 1 July 2023 (UTC)

I moved this thread down to retain chronological order. Please see the discussion on en:Talk:Bayes'_theorem#Removing_a_meme. cmɢʟee ⋅τaʟκ 00:17, 2 July 2023 (UTC)

File:Mamee multivitamins.jpg

Wikimedia Commons does not accept derivative works of non-free works such as File:Mamee multivitamins.jpg. It only accepts free content, which is images and other media files that can be used by anyone, for any purpose. Reproductions of copyrighted works are also subject to the same copyright, and therefore this file must unfortunately be considered non-free. For more information, please read Commons:Derivative works and Commons:Freedom of panorama. You can ask questions about Commons policies in Commons:Help desk. The file you added has been deleted. If you believe that this file was not a derivative work of a non-free work, you may request undeletion.

Yours sincerely, Ubcule (talk) 21:15, 2 July 2023 (UTC)

File:Avogadro number cube visualisation.svg

File:Avogadro number cube visualisation.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. If you created this file, please note that the fact that it has been proposed for deletion does not necessarily mean that we do not value your kind contribution. It simply means that one person believes that there is some specific problem with it, such as a copyright issue. Please see Commons:But it's my own work! for a guide on how to address these issues. Please remember to respond to and – if appropriate – contradict the arguments supporting deletion. Arguments which focus on the nominator will not affect the result of the nomination. Thank you!

2601:14F:8300:9C40:9841:9FA3:F3C8:59E6 18:25, 6 July 2023 (UTC)

Mach band cross.svg

Hi Cmglee, thank you for contributing to Wikipedia -- just wanted to point out an apparent error in/confusing nature of https://commons.wikimedia.org/wiki/File:Mach_band_cross.svg though. The picture seems to strongly imply that the mach cross diagram is the result of summing the two pictures on the left, but that clearly isn't true. For example, the border region of the mach cross image is black, but that's not true of either of the source images. If you want to express the content of the mach cross image visually, you'd either have to show min(g1, g2) rather than g1 + g2 (which seems a bit terse for the average reader); or, show 4 separate triangles which individually clearly contain a simple gradient.

I appreciate that the red dotted lines on the left images are sort of heading in this direction, but I think the average reader is more likely to be confused than enlightened by those images. --RobertStar20 (talk) 04:24, 25 July 2023 (UTC)

Updated

@RobertStar20: Thanks for your constructive feedback. I like the min() idea, though it's ambiguous if white has a smaller value than black or vice versa. I think it's important that the gradient covers the whole square to show that it's just a simple linear gradient.

I've instead repeated small versions of the dashed red shapes in around the "+" sign to show it is the contents of the shapes that are added. Will that work? Cheers, cmɢʟee ⋅τaʟκ 16:22, 26 July 2023 (UTC)

File:Binomial theorem visualisation.svg

I don't know where to put this, but I like "Binomial theorem visualisation.svg"

Thank you for your compliment. I'm glad my diagram has been useful to you. Cheers, cmɢʟee ⋅τaʟκ 12:34, 27 July 2023 (UTC)

File:Pulse oximetry principle.svg

File: Pulse oximetry principle.svg

Hello Cmglee, thanks for this excellent diagram. Probably the best I've seen on the photometric function of pulse oximetry. I had one question about your diagram, which may be a misunderstanding on my part or an inherent source of potential confusion. In the left column, you demonstrate a higher proportion of oxygenated heme molecules, which have a greater attenuation coefficient for infrared light, relative to deoxygenated heme molecules. I might think such a condition leads to relatively less infrared light reaching the photodiode detector. However, it appears the diagram demonstrates greater transmissibility of infrared light compared to visible red light (ie. two gray IR waves reaching the detector relative to one visible red light wave reaching the detector; bar graph showing higher proportion of IR light transmitted compared to visible red light). My misunderstanding remains, but is reversed for the column on the right. Do let me know what you think of this observation and if I've misunderstood somehow. Thanks. Rizzelet (talk) 07:40, 1 August 2023 (UTC)

Hello @Rizzelet: Thank you very much for your compliment and for spotting my mistake. You're right: I confused absorption for transmission, so the light received should inversely proportional to the absorption graph in File:Oxy_and_Deoxy_Hemoglobin_Near-Infrared_absorption_spectra.png. I'll correct the mistake and vectorise the graph. Cheers, cmɢʟee ⋅τaʟκ 12:18, 1 August 2023 (UTC)

File:Lego dimensions.svg

the lego logo on top of the stud is 0.14mm high according to Tiago Catarino in : https://www.youtube.com/watch?v=jWtZUzkvQ2E 2001:67C:2200:3801:B190:D706:5C54:2EC0 20:42, 1 August 2023 (UTC)

Interesting! It's very specific and shouldn't affect most construction techniques, though. Cheers, cmɢʟee ⋅τaʟκ 21:15, 1 August 2023 (UTC)

New version for the file File:CMYK screen angles.svg

I have upload a new version with imho better colors (ie, it uses the cyan in the CMYK color space, approximatively #00a3d9, not the pure RGB cyan #00FFFF, and same for the magenta and yellow). I have added a "multiply" blend mode, instead using an opacity below 1.0 for the mixing of the dots. I hope this is correct for you. Quark67 (talk) Quark67 (talk) 17:49, 9 August 2023 (UTC)

Thanks for updating the diagram and telling me about style="mix-blend-mode: multiply;", @Quark67: that's really useful to learn.

Can you please add to the file description how you converted yellow to #fff151, cyan to #00a3d9 and magenta to #c62f7c? I couldn't find conversion factors in en:CMYK color model?

Thanks,
cmɢʟee ⋅τaʟκ 23:48, 9 August 2023 (UTC)

Chandrayaan 3

Hi, Cmglee!

I'm writing this to request a change to the file that you uploaded regarding the moon landing sites i.e. File:Moon landing sites.svg because yesterday an Indian lunar exploration spacecraft Chandrayaan 3 has landed safely in the south pole of the lunar surface. I saw that you have made many updates to that file whenever a soft landing is successful. Can you please update the same with Chandrayaan 3? Regards 122.185.181.102 07:45, 24 August 2023 (UTC)

Pinging @Cmglee: in case he does not respond. I may create a separate SVG file if necessary. Sbb1413 (he) (talk • contribs) 08:23, 24 August 2023 (UTC)

Yes, I'll do it later today. Meanwhile, could you please help me identify where on the moon's photo the south pole landing site is? Thanks, cmɢʟee ⋅τaʟκ 08:27, 24 August 2023 (UTC)

I don't know the exact coordinates of Chandrayaan-3 right now, but the south pole is marked as S in File:Moon-map.png. I hope this helps you. Sbb1413 (he) (talk • contribs) 08:43, 24 August 2023 (UTC)

It's difficult to identify a point on the moon's limb due to severe distortion in the 2D projection. Would you be able to find some references that point to it in a photograph as seen from Earth similar to the one in the SVG? Thanks, cmɢʟee ⋅τaʟκ 09:09, 24 August 2023 (UTC)

As per the coordinates I get from Wikipedia, Chandrayaan-3 is located southeast of the Tycho Crater. Taking Moon landing sites.svg, it will be east of the Tycho Crater. Although it is difficult to point on the Moon's lime due to 2D projection distortions, Chandrayaan-3's location is close to the Antarctic Circle (69.367621 deg S, compared to Antarctic Circle's 60 deg S). Sbb1413 (he) (talk • contribs) 09:37, 24 August 2023 (UTC)

http://reuters.com/graphics/INDIA-SPACE/zjvqjxbnxpx/graphic.jpg is the best I've found. cmɢʟee ⋅τaʟκ 09:42, 24 August 2023 (UTC)

While it does show the landing site of Chandrayaan-3, it does not identify the Tycho Crater, which is useful to approximate its location in Moon landing sites.svg. However, we can still approximate Chandrayaan-3's location using the location of Surveyor 7. Sbb1413 (he) (talk • contribs) 09:46, 24 August 2023 (UTC)

@Cmglee: The following post is relevant to you: Which Pole of the Moon Can We See from Earth? Understanding the Lunar Perspectives. Sbb1413 (he) (talk • contribs) 15:39, 27 August 2023 (UTC)

Thanks, @Sbb1413: as you've likely seen, I've located the landing site based on a few distinctive features emanating from the Tycho crater.

I took the photograph in Sydney, so the south pole should be visible. Cheers, cmɢʟee ⋅τaʟκ 22:48, 27 August 2023 (UTC)

Military Generations

Hi, I am wanting to reference your military generations/war table. Can you help me with full flat image with all it's details (in English) and a way to cite your work outside of Wikipedia? Great work! Corieweathers (talk) 18:30, 28 August 2023 (UTC)

This diagram?

Thanks for your interest, @Corieweathers:

I'm unsure what you mean by "military generations/war table". If you mean my diagram File:generation_timeline.svg, you can generate a PNG file by replacing e.g. 800px in the following link: http://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Generation_timeline.svg/800px-Generation_timeline.svg.png with the width you prefer in pixels.

The standard attribution:

© CMG Lee / http://commons.wikimedia.org/wiki/file:generation_timeline.svg / CC-BY-SA-4.0

will do. I look forward to seeing your work.

Cheers,
cmɢʟee ⋅τaʟκ 20:43, 29 August 2023 (UTC)

Yes! This one. Is it possible to get it as a flat high resolution png since it is for print? Maybe a larger file than 800? It’s great work, excited to cite you on it. My email is corie@corieweathers.com 2600:387:F:6018:0:0:0:9 22:26, 29 August 2023 (UTC)

How high a resolution? http://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Generation_timeline.svg/2560px-Generation_timeline.svg.png is 2560 pixels by 1600 pixels. Change 2560px accordingly.

I'm unsure what you mean by flat PNG. The alpha channel may be removed with typical image editors without any degradation. Wikimedia's thumbnail generator outputs 32-bit (RGBA) PNG by default. Cheers, cmɢʟee ⋅τaʟκ 06:48, 30 August 2023 (UTC)

Failed notification

Hi, this edit didn't notify me, and wouldn't have notified Glrx and JoKalliauer either. The reason is that both of the links in your signature go to your Wikipedia pages; you need to have at least one link to your Commons user page, your Commons user talk page, or your Commons contibutions. You only need one of them to be a direct link; the other can go to Wikipedia if you like. It's documented at COM:Signatures#Rules on customized signatures. My sig has three links, two at Commons pages, one to Wikipedia: --Redrose64 (talk; at English Wikipedia) 10:06, 3 September 2023 (UTC)

@Redrose64: Thanks very much for investigating and informing me. I didn't know about this. The page you linked merely states

“

The signature must unambiguously identify the author of a comment and must link to the user page, the user talk page or the user's contributions

”

but not on which project these pages reside. Do you have a reference I can use to update it to refer to the behaviour you described? Regardless, I hope it works correctly now. Cheers, cmɢʟee ⋅τaʟκ 11:45, 9 September 2023 (UTC)

It did work thanks, probably because of the user_talk: link. As for a ref, it's stuff I've picked up in various places (e.g. w:en:WP:MENTION and w:en:Wikipedia:Signatures#Syntax guidance, fourth bullet). Whatamidoing (WMF) (talk · contribs) may know where the definitive guidance is. --Redrose64 (talk; at English Wikipedia) 20:24, 22 September 2023 (UTC)

Thanks, @Redrose64. I couldn't find information on notifying other users in these links so added your guidance in the fourth bullet point referencing your earlier post. Please feel free to edit it as needed. Cheers, cmɢʟee ⋅τaʟκ 08:15, 23 September 2023 (UTC)

Are you looking for mw:New requirements for user signatures? Whatamidoing (WMF) (talk) 18:42, 23 September 2023 (UTC)

Thanks @Whatamidoing (WMF): https://www.mediawiki.org/wiki/New_requirements_for_user_signatures#Require_a_link_to_user_page,_talk_page_or_contributions almost has it but doesn't make it clear that the user page etc must be on the same project e.g. a Commons signature can't have all its links to English Wikipedia. Should that be made explicit? cmɢʟee ⋅τaʟκ 22:37, 23 September 2023 (UTC)

Thanks. I've updated that section. Hopefully that will be clearer. Whatamidoing (WMF) (talk) 22:28, 25 September 2023 (UTC)

@Whatamidoing (WMF): Thanks. I've added a reference to it on en:Wikipedia:Signatures#Syntax_guidance. Cheers, cmɢʟee ⋅τaʟκ 19:04, 26 September 2023 (UTC)

 Thank you. Whatamidoing (WMF) (talk) 22:51, 26 September 2023 (UTC)

Zeitpyramide.svg 2023 Update

The fourth Zeitpyramide block will be installed on September 9 this year, so do you already have a 2023 update of your trimetric projection of it?

-Chris25689 (talk) 14:09, 8 September 2023 (UTC)

 Done

@Chris25689: Thanks for telling me. If I remember correctly (it's been a decade!), I added but commented out code for the fourth block. If it's there, please enable it – otherwise, I'll work on it the next chance I get. Thanks, cmɢʟee ⋅τaʟκ 20:37, 8 September 2023 (UTC)

You're welcome and thanks for the update!

-Chris25689 (talk) 13:49, 9 September 2023 (UTC)

Chris25689 and @Cmglee: The image was updated on wikimedia commons but [on wikipedia]. Clicking on the image shows the fourth block but not when it is simply viewed normally. Wretchskull (talk) 08:50, 10 September 2023 (UTC)

@Wretchskull: By "viewed normally", do you mean the thumbnail in the article or the almost fullscreen Media Viewer? Both show the fourth block on my Firefox on Windows. Cheers, cmɢʟee ⋅τaʟκ 23:56, 11 September 2023 (UTC)

References

Incorrect SIS 01 47 11 format order since your update 18 April 2016

Well this is truly a Wikipedia fail... On the 18th April 2016 you updated File:Comparison SIS 014711 paper sizes.svg "Fix swapped F and G, increase spacing and use proper inch symbol."

However until today another image with the unfixed order of F & G was still being on display at both the ISO 216 & Paper size Wikipedia articles! This even led to the gradual rearrangement of the order to the unfixed variant in the article texts themselves in multiple revisions: 21 April 2023, 11 September 2022, 16 December 2020 and 28 October 2014.

I was almost fooled myself until I peeked into a preview of the actual SS 01 47 11 standard and found the error because I couldn't make sense of the formats. Vitdom (talk) 00:17, 26 September 2023 (UTC)

@Vitdom: Thanks for letting me know. The thumbnails on both pages look fine now. If you refreshed them, thanks! cmɢʟee ⋅τaʟκ 19:12, 26 September 2023 (UTC)

Regular polygon Euclidean Steiner tree

Hi, I noticed that the text of this file in the png preview is a bit off. If I open the svg file it's okay, but in the png the text isn't centre aligned, so the number after the L= isn't visible. Vinickw ^talk 12:41, 6 October 2023 (UTC)

The thumbnail renderer (rsvg) has a regression described on https://phabricator.wikimedia.org/T97233#8977673 . I'll try to work around it. Cheers, cmɢʟee ⋅τaʟκ 14:03, 6 October 2023 (UTC)

 Done cmɢʟee ⋅τaʟκ 14:29, 6 October 2023 (UTC)

Thanks! Vinickw ^talk 18:40, 9 October 2023 (UTC)

Generation_timeline.svg Missing Data in Most Recent Edit

Hello! When viewing File:Generation timeline.svg, the 21:58, 30 June 2023 version successfully shows the rounded grey background... time periods? Not sure what to call them. However, when I view the most recent 00:32, 16 July 2023 version, (on chrome) these time periods are not present. This is also the case on all articles it is included in.

Were they mistakenly removed, or was it done on purpose? I personally found them very helpful.

Thank you for all the work you've done on this image, Knotimpressed (talk) 14:43, 24 October 2023 (UTC)

@Knotimpressed: Thanks for your compliment and bringing the issue to my attention. I had previously created its en-simple version to make it less cluttered when used in an infobox.

It seems a change in Wikimedia Commons policy has caused it to be displayed by default instead of the default version. When I can, I'll explicitly add an en version to take precedence.

Meanwhile, the default version can be viewed by using this link.

Cheers, cmɢʟee ⋅τaʟκ 19:16, 24 October 2023 (UTC)

No worries! Happy to help, hopefully you get the chance soon. Knotimpressed (talk) 19:23, 24 October 2023 (UTC)

You confront so many interesting issues! Glrx (talk) 19:34, 24 October 2023 (UTC)

@Glrx: Thanks for monitoring the issue. I guess one bleeds when at the bleeding edge (of SVG) ;-) cmɢʟee ⋅τaʟκ 20:34, 24 October 2023 (UTC)

Larger sport pitches

Can you make another image of larger sports pitches like track and field, cricket, football codes, field Hockey, etc? 161.132.241.124 14:13, 15 November 2023 (UTC)

Which of the following styles are you referring to?

File:Comparison_sport_playing_areas.svg

File:throwball_court.svg

cmɢʟee ⋅τaʟκ 14:41, 15 November 2023 (UTC)

The first one, additional image but about larger sport pitches. 161.132.241.124 16:21, 15 November 2023 (UTC)

I'll consider doing that in the future, if there's demand for it. Cheers, cmɢʟee ⋅τaʟκ 16:36, 15 November 2023 (UTC)

Planetary Models

Hello, CMG Lee!

I recently viewed the 3D .stl planetary models of the Moon, Earth and Mars that you created :

https://commons.wikimedia.org/wiki/File:Mars_elevation.stl

...etc, and think that they are wonderful!

I was wondering if you would have the time (or desire!) to create the same type of 3d renderings of Venus and of Mercury? That way, you would be providing a full set for people to marvel at!

(If you don’t have the time to do both, I think Venus would be the more significant of the two, considering its many similarities to our own planetary home.)

Thanks in advance, and I look forward to hearing back from you!

Aryiadne (talk) 15:30, 5 December 2023 (UTC)

p.s.

I initially contacted User_talk:TilmannR with this request, since from your conversation with him over at his user page :

• https://commons.wikimedia.org/wiki/User_talk:TilmannR/Archive#Mars_elevation_STLs

...I understood that his versions are something like "updated" variants of your initial ones? (It also seemed to me that his way was technically simpler - since all three of his models are all identical in size, this suggested to me that there is something more "systematic" about his method?) My aim was to contact the one among you who would end up being least put out by this task.

Unfortunately, he declined my request to create these models.

If you are able to set aside some time to construct these globes -- especially based on what you say about most enjoying educational projects :) -- I think that not only I, but many people who are passionate about Astronomy would very much appreciate your effort, as we already appreciate the three globes which you have already created!

To save this message getting too long - if you are interested, you can have a look at TilmannR's talk page :

• https://commons.wikimedia.org/wiki/User_talk:TilmannR

for some useful links that I have posted there with respect to these models.

:)

Hi @Aryiadne: Thanks for your compliment and interest in my models. I'd be glad to make globes of Mercury and Venus if you can upload equirectangular heightmaps similar to File:Earth_dry_elevation.png.

Re your comments on User_talk:TilmannR. I would not recommend the maps on Etsy. Firstly, the data is questionable: it was likely made for aesthetics and not accuracy. Secondly, it appears to use shaded relief, thus the height values are wrong.

TilmannR's method for File:Earth_dry_elevation_2.stl uses Blender to make a triangulated-irregular-network mesh, while I wrote my own heightmap-to-mesh converter which yields a uniform grid at the expense of larger file size (or lower resolution) for the original File:Earth_dry_elevation.stl. My later File:Earth_dry_elevation_10x.stl roughly uses his/her method. I've described the procedure on File:Earth_dry_elevation_10x.stl#Steps_to_reproduce_in_Blender_2.8.

Cheers,
cmɢʟee ⋅τaʟκ 10:05, 6 December 2023 (UTC)

Hi again, CMGLee!

Thank you for your prompt reply :)

I am not precisely sure what type of map would most suit you for this – is it the fact that it is black & white that allows you to most appropriately gauge the precise heights..?

Here is a link to the home page of a planetary researcher who has high-quality equirectangular projections :

• https://stevealbers.net/albers/sos/sos.html

He has himself used these projections in creating 3D globular models of the planets for an educational project called 'Science of a Sphere' :

• https://sos.noaa.gov/catalog/datasets/?fullText=venus

But, if it is specifically a graded b&w map you need, I am not sure if these links can help you with creating .stl models...

There are some more here :

• https://solarviews.com/cap/index/venus1.html
• https://solarviews.com/cap/venus/topoven2.htm
• https://solarviews.com/cap/venus/topoven1.htm
• https://www.researchgate.net/figure/Topography-map-Rappaport-et-als-360x360-topography-model-23-reproduced-by_fig4_238792153
• https://www.flickr.com/photos/109586958@N03/11097589455

but again, I am unsure how useful they can be to you...

Can’t the various large-resolution .png maps already on wiki-commons, which are coloured for elevation, be used, such as :

• https://commons.wikimedia.org/wiki/File:Topographic_map_of_Venus._LOC_95680656.jpg
• https://commons.wikimedia.org/wiki/File:Map_of_Venus.png
• https://commons.wikimedia.org/wiki/File:VenusLanderTopo.jpg (i.e. the original map used as the basis of this image)

...or does the fact that they are scanned from paper and the presence of grid lines hinder their usefulness?

Aryiadne (talk) 00:44, 8 December 2023 (UTC)

Hi @Aryiadne: You got the correct idea with

https://solarviews.com/cap/venus/venuscyl5.htm

except that

1. It's colour-coded instead of greyscale; converting it to greyscale afterwards will not do as elevation is no longer linearly scales with pixel value.
2. Its licence allows only non-commercial use.

http://solarviews.com/cap/venus/topoven2.htm

on the other hand:

1. It's a Mercator instead of equirectangular projection.
2. It covers only 66.5°N to 66.5°S.

Others have gridlines and annotations.

Thus the requirements I can think of now are:

1. Has a compatible licence e.g. public domain or Creative Commons (except non-commercial or no-derivatives)
2. Pixel value linearly proportional to elevation (either dark or light is high is fine)
3. Is equirectangular
4. Covers the entire planet
5. Has no extraneous detail
6. At least 360×180 resolution for 1-degree resolution

cmɢʟee ⋅τaʟκ 03:57, 8 December 2023 (UTC)

Hi, CMGLee!

First, I apologize for my delay in replying.

Thank you for your detailed explanation. I think I now understand that making a 3D model requires a very specific type of base map. From what I see with the b&w Earth and Mars elevation maps, it is quite a simple one, but clearly not always available, as is evident in the case of Venus... :-/

I guess I will have to search more for an appropriate map. (By the way, on the licencing issue - I thought Wikimedia Commons is considered "non-commercial"..?)

Can I ask just one more thing quickly, as I don’t want to take up more of your time unnecessarily - if the colour map of Venus is carefully converted to black and white in such a way that "purple > black" and "red > white" (and everything in between is systematically graded)... will it then become usable?

If it is possible, I will see when I can set aside some time to see what I can do.

Thank you! Aryiadne (talk) 23:49, 12 December 2023 (UTC)

Hi @Aryiadne: no problem at all.

There are several ways to store and convey the data – a grayscale image is just one, but possibly the most accessible. Some drawbacks are that it cannot represent overhangs (rare in the real world) and possible elevation values are limited (256 in 8-bit, 65536 in 16-bit) If you're interested in this area, see en:digital elevation model.

By non-commercial, I mean that contributors of an image etc can specify that their work may only be used in non-commercial settings such as in education. Wikimedia Commons cannot accept such files or files derived from them as all files hosted there must be usable by anyone including commercial entities, though they may need to credit the original author and/or share derivative works under a similar licence, if the author requires it.

The actual shade of grey in a proper height map has numerical meaning e.g. if value 0 denotes 1000 metres and value 100 denotes 1200 metres, we expect value 50 to denote 1100 metres. If we take a coloured topological map and convert it to greyscale (black and white in everyday parlance), this cannot be guaranteed. Indeed, if the colours pass through yellow, say, we may find middling elevations having larger values than higher elevations.

May I suggest asking for the heightmaps in equirectangular projection on en:Wikipedia:Reference_desk/Science to see if anyone has any leads?

Good luck!
cmɢʟee ⋅τaʟκ 00:20, 13 December 2023 (UTC)

Hi @Aryiadne: (CC @TilmannR: )

I've found a Venus heightmap on http://astrogeology.usgs.gov/search/map/Venus/Magellan/RadarProperties/Venus_Magellan_Topography_Global_4641m_v02 but it has missing data.

http://deviantart.com/oleg-pluton/art/Venus-elevation-map-improved-768916009 fills in the gaps and increases the contrast so it's no longer scientifically accurate, but it might do for a teaching aid or ornament.

Note that though several other greyscale images claim to be maps of Venus, they are SAR or albedo maps; the heightmap has the northern highland (Ishtar Terra) lighter (i.e. higher) than the equatorial one (Aphrodite Terra).

Cheers,
cmɢʟee ⋅τaʟκ 03:47, 26 December 2023 (UTC)

List of wire gauges: mistake

The file https://commons.wikimedia.org/wiki/File:Comparison_wire_gauge_sizes.svg appears to contain a small mistake. SWG wire size 0 is missing, and sizes from 2/0 to 8/0 should be numbered 0 to 7/0. There is not an SWG 8/0 in the standard. The actual sizes appear correct, only the labels are off. I compared your work with the article from journal "Anesthesia" about the history of wire gauges that is freely accissible: https://associationofanaesthetists-publications.onlinelibrary.wiley.com/doi/epdf/10.1046/j.1365-2044.1999.00895.x which contains the presumably correct table. Morycm (talk) 02:54, 25 December 2023 (UTC)

Hi @Morycm: you're absolutely correct! Thanks for spotting my careless mistake. I've uploaded a new version. Is it all right now? Cheers, cmɢʟee ⋅τaʟκ 03:44, 25 December 2023 (UTC)

Looks good! To be sure, I loaded all your data into a spreadsheet — with AutoFilter, to show one scale at a time. A bubble chart showing bubbles proportional to sizes in a log-log graph shows no gaps, and no more mixups. Happy Holidays! Morycm (talk) 06:22, 25 December 2023 (UTC)

Thanks so much for checking the sizes. The image was rendered with Python, so unless I made a mistake, the sizes should at least be consistent with one another. Glad we sorted this diagram out! cmɢʟee ⋅τaʟκ 09:55, 25 December 2023 (UTC)

Existence area of ice

In the German-language Wikipedia in the article "Überkritisches Wasser" (Supercritical Water) is in the File:Phase diagram of water simplified.svg the phase boundary from ice to water or critical fluid continuous. Is there actually a critical fluid phase boundary at high pressures? Or, is water actually present as solid ice at one Mbar and 700 K, as shown in the diagram? --Elrond (talk) 15:02, 25 December 2023 (UTC)

Hi @Elrond: I don't know enough to answer the question. The first two references on File:Phase_diagram_of_water.svg#Summary are now dead, but Figure 7 on the third also shows a continuous boundary up to 800 K. If you can find an authoritative answer otherwise, please let me know. Thanks, cmɢʟee ⋅τaʟκ 15:13, 25 December 2023 (UTC)

Thanks for the feedback. I'm sorry, I'm not an expert in this area and don't have any further literature. It just occurred to me and hence the question, best regards Elrond (talk) 16:13, 25 December 2023 (UTC)

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