User talk:Ricardo Cancho Niemietz

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Welcome!

Hello, Ricardo Cancho Niemietz, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:

I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question and then place {{helpme}} after the question on your talk page. Again, welcome! 

Standard template above, I just wanted to add, Good work at List of palettes! :) --Quiddity 18:41, 27 February 2007 (UTC)

Contents

[edit] Great job!

Awesome job on the List of palettes article! Thank you for your many contributions to the article! Nice to have people like you on Wikipedia. See you around. Jecowa 03:20, 28 February 2007 (UTC)

[edit] Re: One of your images substituted in the List of palettes article

Hey, I just wanted to let you know that Wikipedia prefers images of the highest quality possible (unless the image is copyrighted). The Mediawiki software automatically creates a scaled-down version of the image to the exact size needed in the article. Thanks for trying to optimize the article though. Jecowa 21:09, 6 March 2007 (UTC)

[edit] Reply to your comments

I will respond to the comments you placed at User talk:Gerry Ashton at that place to keep the discussion in one place. --Gerry Ashton 20:11, 19 April 2007 (UTC)

[edit] source for "Tower of Babel" tributes to Metropolis (film)

Hi, do you know of a source that says this? --Jtir (talk) 20:08, 4 February 2008 (UTC)

About Blade runner, the alike building is shown also in its official poster; you can see it in its wikipedia's article as well. About Akira it is shown at the very beginning of the film, among the aerial views of Neo-Tokyo. You can find it in the following Akira's photo gallery: http://www.animegalleries.net/img/13699. But written sources explaining the images as been Metropolis' inspired, sorry, I haven't them. Wikipedia states that "content" must be verificable, and the images I referred are physical proofs of the fact (or perhaps do you think that the similarities of the takes are pure coincidence? :-)Ricardo Cancho Niemietz (talk) 10:29, 5 February 2008 (UTC)
We are in luck with Blade Runner, anyway. The article has an excellent reference that can be searched online at amazon.com. It says quite a bit about Metropolis (film) — much more than what is in BR. BTW, I was thinking more of WP:NOR. --Jtir (talk) 16:13, 5 February 2008 (UTC)
I've found a blog in spanish (I'm from Spain) talking about Metropolis-alike cinema cities, in http://www.divertinajes.com/cinexin/030318.html. Even if you don't understand spanish, you can enjoy all the photographs; they include "tower of Babel". The author mentions Jorge Gorostiza, architect and film-lover (Gorostiza also has a book about Blade Runner buildings, but I don't know if he cites explicitely Fritz Lang's Metropolis). In every case, the blog's author cites Katsuhiro Otomo's Akira, but he doesn't stablishes the direct tribute to Metropolis, so most likely this blog can't be cited as source. But if it helps you...--Ricardo Cancho Niemietz (talk) 18:08, 5 February 2008 (UTC)

[edit] Hexadecimal Digits in Unicode

Hi Ricardo,

I saw that you made the Unicode application, concerning the hexadecimal digits from ten to fifteen. I think if you make efforts in this direction, you shouldnt be too modest and better make the application for all the sixteen figures. Unicode has good reasons, to distinguish between A, А and Α (enter in Google to see the difference) - similar reasons make it necesseary not only to distinguish between these letters and the hexadecimal ten, but also between the decimal one and the hexadecimal one:

First: I think the hexadecimal system will be more and more important in the future, so that one day special hexadecimal figures will be in use. Than it should be no problem to choose between old and new typefaces, showing the same hexadecimal number as 1F60 or something like Image:000L.jpgImage:0LL0.jpg. This is only possible, when all sixteen numbers exist in Unicode.

Second: Much more important: If not all sixteen hexadecimal figures get a place in the unicode tables, it will be never possible to bring hexadecimal numbers in lexicographical order:

It is and will always be necesseary, that anything (e.g. files in a computer) denoted by decimal numbers will be ordered like this:

0; 3; 7; 7a; 7b; 8; 9; 9a; 9e; 9f; 9g; 9h; 10; 10a; 10f; 11; 12; 13; 13a

As long as the ten decimal figures are also used to write hexadecimal numbers, it will never be possible to order files or anything denoted by hexadecimal numbers like this:

0; 0a; 0b; 1; 1a; 1b; 2; 3; 7; 8; 9; A; Aa; Ab; B; C; D; E; F; Fa; 10; 10a; 10b; 11; 12; 15; 19; 1A; 1B; 1C; 1Ca; 1Cb; 1Cc

At the moment the computer can not see a big difference between file 1a (one - a) and file 1A (file twentysix). I think even the problems resulting only from this point are big enough, to justify the encoding of all sixteen figures.

By the way, I developed a suggestion how the new hexadecimal figures could look. They are designed also to serve as signs for the sixteen logical connectives, that´s why they are both vertically and horizontally symmetric in the Hasse diagram below: Image:Hexa.jpg

See also: de:Diskussion:Hexadezimalsystem#Kommastellen_im_Hexadezimalsystem

Greetings, Tilman Piesk (talk) 19:52, 23 February 2008 (UTC)

First, thanks a lot for your kind words. About hexa digits for Unicode, I mainly addressed the fixed-pitch figure space issue for hexa digits ten to fifteen in proportional-pitch fonts. Also, there is no room enough in the Number forms block to fit all the sixteen digits. And following your suggestions, also alternative repertories for binary (0-1) and octal (0-7) should be added (at least); it seems to me not so practical. Some other problems arises when collating hexa vs. decimal numbers: which are first? If 7 and 7h represent the same value (seven) both to humans and computers, why two separate symbols? (It is not the same case than for Latin A, Greek Alpha and Cirillic A.) And what about of mixed decimal and hexas? Too complex, I think. My proposal was intended to manage hexa symbols the same way as today, splitting Arabic digits 0-9 and letterlike hex digits A-F. I simply suggested codepoints to typographically appropiate characters. I also did not suggest alternative shapes (except as font designers' choice). Your glyphs and diagram seem to me so esoterical (literally, but beauty anyway). But, sorry, I won't support your initiative. The mine, so "modest", was rejected by the Unicode cometee; think about yours... Yours. -Ricardo Cancho Niemietz (talk) 09:14, 25 February 2008 (UTC)

[edit] Great job with the indexed-color related articles

The Original Barnstar
Have this barnstar for great work on the palette and indexed color articles. —jacobolus (t) 02:00, 27 February 2008 (UTC)
Thanks a lot! -Ricardo Cancho Niemietz (talk) 09:00, 27 February 2008 (UTC)

[edit] rationale

I have reverted your fair use rationale as nonsense. Dicklyon (talk) 17:31, 13 May 2008 (UTC)

I revert your revertion. "Nonsense" must be argued before deletion. It seems that you dislike the test card image (Perhaps 'cos it's an European one? Do you prefer a NTSC, American one instead?), but to me and to all the people visiting the article the image is fine, fits well and it's accurate. So keep it there. Again, your "contributions" are mainly deletions, that (when not about vandalism) are discouraged by the Wikipedia guidelines. Ricardo Cancho Niemietz (talk) 18:29, 14 May 2008 (UTC)
The test card is fine. But apparently it's not free, and since I didn't see it as very relevant to the RGB article, and since the rationale you made up for it there was nonsense, I still say we should not be using it there. Dicklyon (talk) 05:54, 17 May 2008 (UTC)

[edit] HSB in RGB color model article

Hi. You [jacobolus] stripped away twice my HSB example in the RGB color model article. Yes, it's merely an example, but it's an interesting one 'cos its geometric representation isn't a cube, but a cone. Your proposals Lab and YUV have cubes as their geometric representations, the same as RGB. So please, "rescue" again the HSB example in order to cite al least an 3-component color model that don't map to a cube. Yours. Ricardo Cancho Niemietz (talk) 18:12, 14 May 2008 (UTC)

Yup, I did, and I'd do it again. The sentence says “in other color models…” and putting HSV in that category is inaccurate or at least imprecise, because HSV is the same color model. Instead, HSL/HSV should be given a paragraph or two under the “geometric representations” section of the RGB article, because they are alternate geometric representations of RGB. —jacobolus (t) 18:47, 14 May 2008 (UTC)
I think you'll need a good source to assert that RGB and HSB are the "same color model". It's right that both can be mapped into each other thru appropiate conversions, but they aren't the "same". Also, HSB isn't the same that HSL/HSV. The geometrical representation of HSB is a cone, but that of HSL/HSV is a double cone (two cones sharing their bases and with their vertices pointing to opposite directions). At most, HSB and HSL/HSV are "alternative" representations of RGB (or any other color model), but their color models are different that RGB. Yours. Ricardo Cancho Niemietz (talk) 11:08, 16 May 2008 (UTC)
According to HSL and HSV, HSB is typically interpreted as same as HSL, a bi-cone, as opposed to HSV, a cone (if you have sources to the contrary, that would be a good place to add them). Both are trival transformations from gamma-compressed RGB, which is why Jacobalus say they use the same color model. You can figure out what color they represent without going through an additive combination of R, G, and B primaries. Dicklyon (talk) 05:47, 17 May 2008

(UTC)

Hum, it must be an error somewhere. For a practical comparison, test the HSB sliders in Photoshop, and you will see that maximum value of the Brightness (B) component corresponds with white if Saturation (S) component is zero, but another color if saturation is greater than zero. That is, B=max is the base of a single cone, while B=0 is the vertex. But when in the «Hue/Saturation» adjustment, it uses HSL instead, where the minimum and maximum values for the Luminosity (L) component are black and white, respectively, regadless the values of the other components, the Hue (H) and the Saturation (S). That is, they are the two vertices of the double cone. So probably there are some confussion in the article you cite, due to HSB isn't equal to HSL/HSV. As you have a Mac, test the built-in system's color selection applets and you will see, along with the RGB color selector, two different selectors for HSB and HSV/HSL. In other hand, all of us agree in that there are interchangeability between RGB and HSB, or RGB and HSV/HSL, but that they are different models (components don't represent the same in RGB that in HSB), so it's OK. Yours. Ricardo Cancho Niemietz (talk) 09:42, 19 May 2008 (UTC)

[edit] Duplicate Image:Screen color test SEGAGameGear.png

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