Ooker
 First steps tutorialOur first steps tour and our frequently asked questions will help you a lot after registration. They explain how to customize the interface (for example the language), how to upload files and our basic licensing policy (Wikimedia Commons only accepts free content). You don't need technical skills in order to contribute here. Be bold when contributing and assume good faith when interacting with others. This is a wiki.  Getting helpMore information is available at the community portal. You may ask questions at the help desk, village pump or on IRC channel #wikimedia-commons (webchat). You can also contact an administrator on their talk page. If you have a specific copyright question, ask at the copyright village pump. |
 Goodies, tips, and tricks
 Made a mistake?
|
| Babel user information | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| |||||||||
| Users by language | |||||||||
-- Wikimedia Commons Welcome (talk) 16:26, 23 July 2015 (UTC)
Data Source for https://commons.wikimedia.org/wiki/File:Phổ_điện_từ.svg edit
26 January 2024
Bản dịch tiếng Việt bên dưới, nhờ Google dịch.
Greeting Ooker,
I've taken a keen interest in the spectral data in the wikimedia image you uploaded at:
https://commons.wikimedia.org/wiki/File:Phổ_điện_từ.svg
It impresses me because it is the best representation of the actual perception of the spectrum created by a prism in sunlight that I have been able to find. It looks very real, with appropriate luminance variation and chromaticity, yet it is almost too perfect.
I've taken the file and stripped away all but the gradient data and presented it in a new SVG that shows the spectrum larger with a more complete annotation of wavelengths and added salient atomic spectra.
I'd like to cite the source of the data. You label the gradient 'lgSpectrum-3'. Google only gives me links to a line of LG mobile phones.
Did you create the data yourself? If so how? Did you take measurements? Or is there an LG site that posted the data related to their many display products? Or perhaps there is some other source?
I do not have a wikipedia account, so I will check back here periodically for a reply. After say 6 months, if there is no reply, I'll stop checking. A Vietnamese reply is OK. Google translate is very effective.
Best Wishes
Xin chào Oaker,
Tôi rất quan tâm đến dữ liệu quang phổ trong hình ảnh wikimedia mà bạn đã tải lên tại:
https://commons.wikimedia.org/wiki/File:Phổ_điện_từ.svg
Nó gây ấn tượng với tôi vì nó là sự thể hiện tốt nhất cảm nhận thực tế về quang phổ do lăng kính tạo ra dưới ánh sáng mặt trời mà tôi có thể tìm thấy. Nó trông rất thật, với sự thay đổi độ chói và màu sắc phù hợp, nhưng nó gần như quá hoàn hảo.
Tôi đã lấy tệp và loại bỏ tất cả trừ dữ liệu độ dốc và trình bày nó trong một SVG mới hiển thị phổ lớn hơn với chú thích đầy đủ hơn về bước sóng và bổ sung thêm phổ nguyên tử nổi bật.
Tôi muốn trích dẫn nguồn dữ liệu. Bạn gắn nhãn gradient 'lgSpectrum-3'. Google chỉ cung cấp cho tôi liên kết đến một dòng điện thoại di động LG.
Bạn đã tự tạo dữ liệu phải không? Nếu vậy thì thế nào? Bạn đã lấy số đo chưa? Hoặc có trang nào của LG đăng dữ liệu liên quan đến nhiều sản phẩm màn hình của họ không? Hoặc có lẽ có một số nguồn khác?
Tôi không có tài khoản wikipedia nên tôi sẽ kiểm tra lại đây định kỳ để nhận được câu trả lời. Sau 6 tháng, nếu không có phản hồi, tôi sẽ ngừng kiểm tra. Trả lời bằng tiếng Việt là được. Google dịch rất hiệu quả.
Lời chúc tốt nhất 2604:3D08:5780:2900:3B57:8C4B:288:CD26 15:10, 26 January 2024 (UTC)
- Hey, thanks for your interest. Are you referring to the Linear visible spectrum.svg? I first know about it via the File talk:EM spectrum.svg - Wikimedia Commons. Until you say now that I know the gradient is labeled as lgSpectrum-3. Before that I didn't know about this label.
- I check the File:EM spectrum.svg - Wikimedia Commons page and see that many versions of the file use the actual perception of the spectrum as well. I wonder why you choose the Vietnamese version? I guess the English one will serve you better?
- Ooker (talk) 06:28, 27 January 2024 (UTC)
- 27 January 2024
- Hi,
- Thanks for the prompt response.
- I edit SVG files manually so I see all the detail including meta data. I started with a webp file I found on a web page somewhere and did a google image search. That took me to the wikimedia file:
- https://upload.wikimedia.org/wikipedia/commons/f/f1/EM_spectrum.svg
- which is the English version of your file. From that I determined that your file was the first version of that particular derivative. That is because the English file contains the line:
- inkscape:export-filename="D:\Quả Cầu\Media\Physics\Phổ điện từ.png"
- so a google search brought me to your file.
- It appears the file you link above is the original file for the data I am interested in. The file you link is different and much simpler, uploaded by someone named 'Gringer'. I wish I had known about that file - it would have saved me a lot of editing. That is, it seems your file is a derivative of that file. The gradient data is identical. 'lgSpectrum' apparently means 'large spectrum' - unrelated to any data source.
- That link does not have anything on the talk page. It does, however, have a description with links to datasets that were used and a link to code that generated the gradient data. Thus your reply has been helpful. Thank you.
- The talk page you link is for the English version of your file authored by 'Philip Ronan', the source of the file that led me to your file. The 'Philip Ronan' wikipedia account has been deleted. I see you are active on that talk page.
- You ask about the irregularity of rendering and overlaps between graphics and text. This is due to variations in the font and whether the rendering engine recognizes the specified font. That depends on the browser you are using or the program used to create the png, and the font choices made by the author. It also depends on Inkscape. Many people use Inkscape because it is easy to do point and click editing. Inkscape, however, clutters the resulting SVG file with a lot of unnecessary namespaces, specifically 'inkscape' and 'sodipodi'. I'm not sure what those do, but I guess they are Inkscape specific, because I have never had a problem manually deleting all of it. The remaining SVG text still renders and is much easier to read.
- 'Gringer's user page:
- https://en.wikipedia.org/wiki/User:gringer?rdfrom=commons:User:Gringer
- discusses the simpler file you link to and links to:
- https://en.wikipedia.org/wiki/Talk:Visible_spectrum
- which contains a lot of additional discussion about that file, in case you are interested. He uses CIECAM02 which is a color appearance model that accounts for human perceptual idiosyncracies. That explains why the image is so true to life.
- Anyway, many thanks for the links. They have answered most of my questions. 2001:569:7CC6:D00:3A58:A5D1:A59C:26FB 08:34, 28 January 2024 (UTC)
- I'm glad to help. Yes it was me at the time to be the first person to implement the correct visible spectrum to the EM spectrum. Because of your question that I checked it again and have a little surprise of seeing many versions from that.
- I click on the user page of 'Philip Ronan' and it's actually User:Sakurambo. It is deleted indeed, but there is a notice saying that it has been move to User:Sakurambo~commonswiki. I don't know how to look further, but it looks like you don't need that anyway.
- Thanks for the link, I didn't know that colors are that complicate. It's interesting to know.
- Out of curiosity, why don't you create an account? You don't have to manually check if I reply or not. Also, can I know what is your job? You seem to be knowledgeable in graphic rendering technologies and color models, yet being unable to figure out the correct keyword to search for the correct spectrum? I'm assuming that if you are already knowledgeable in color models, then you have already have the correct keyword in your mind? Ooker (talk) 12:29, 28 January 2024 (UTC)
