Wikidata:Property proposal/dpi

dpi

dpi (A4)

Originally proposed at Wikidata:Property proposal/Creative work

   Done: dpi for A4 printing (P10316) (Talk and documentation)

Description	resolution in dots per inch (dpi) when printed on format A4 (210 × 297 mm), value based on pixels of image and aspect ratio
Data type	Quantity
Domain	images
Allowed values	> 0
Allowed units	none
Example 1	File:Interior at .. → 381
Example 2	File:Ramon Casas Charge.jpg → 109
Example 3	File:Portrait of King Alfonso XIII.jpg → 259
Example 4	File:Ramon Casas - Self-portrait .. → 412
Planned use	as above
Wikidata project	WikiProject Painting (Q14942930)

dpi (original size)

Originally proposed at Wikidata:Property proposal/Creative work

   Done: DPI for original size (P10300) (Talk and documentation)

Description	resolution in dots per inch (dpi) when printed at original size of painting or other work, value based on pixels of image and size of work (height, width)
Data type	Quantity
Domain	images
Allowed units	none
Example 1	File:Interior at .. → 71
Example 2	File:Ramon Casas Charge.jpg → 7
Example 3	File:Portrait of King Alfonso XIII.jpg → 19
Example 4	File:Ramon Casas - Self-portrait .. → 491
Planned use	populate for some lists of paintings
Wikidata project	WikiProject Painting (Q14942930)

Motivation

When trying to figure out what images there are available for paintings, I noticed that this is actually fairly complex to determine (see Wikidata_talk:WikiProject_sum_of_all_paintings#Resolution_of_image), The two measures above can help with that. To scale with Wikidata's (or Commons) size, it would be helpful to store them as value rather than to re-calculate on every request. Initially I looked at A3 (Q3410190), but given the available files A4 (Q280184) seems more realistic (Add your motivation for this property here.) --- Jura 10:07, 17 November 2021 (UTC)

Discussion

•  Support, important properties for painting.--Arbnos (talk) 11:40, 20 December 2021 (UTC)
•  Support — MasterRus21thCentury (talk) 06:47, 10 January 2022 (UTC)
• Vladimir Alexiev (talk) 11:59, 13 March 2017 (UTC) Jonathan Groß (talk) 17:52, 26 March 2017 (UTC) Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits Jneubert (talk) 13:47, 29 April 2017 (UTC) Sic19 (talk) 20:42, 12 July 2017 (UTC) Wikidelo (talk) 21:15, 8 May 2018 (UTC) ArthurPSmith (talk) 19:52, 22 August 2018 (UTC) PKM (talk) 19:40, 23 August 2018 (UTC) Ettorerizza (talk) 06:44, 8 October 2018 (UTC) Fuzheado (talk) 03:47, 19 December 2018 (UTC) Daniel Mietchen (talk) 16:30, 7 April 2019 (UTC) Iwan.Aucamp (talk) 21:48, 3 October 2019 (UTC) Epìdosis (talk) 23:49, 22 November 2019 (UTC) Sotho Tal Ker (talk) 00:52, 1 May 2020 (UTC) Bargioni (talk) 09:48, 02 May 2020 (UTC) Carlobia (talk) 14:34, 11 May 2020 (UTC) Pablo Busatto (talk) 03:22, 23 June 2020 (UTC) Matlin (talk) 10:53, 6 July 2020 (UTC) Msuicat (talk) 21:57, 27 August 2020 (UTC) Uomovariabile (talk) 10:04, 27 October 2020 (UTC) Silva Selva (talk) 17:21, 30 November 2020 (UTC) 1-Byte (talk) 15:52, 14 December 2020 (UTC) Alessandra.Moi (talk) 17:26, 16 February 2021 (UTC) CamelCaseNick (talk) 21:20, 20 February 2021 (UTC) Songceci (talk) 18:45, 24 February 2021 (UTC)]] moz (talk) 10:48, 8 March 2021 (UTC) AhavaCohen (talk) 14:41, 11 March 2021 (UTC) Kolja21 (talk) 17:37, 13 March 2021 (UTC) RShigapov (talk) 14:34, 19 September 2021 (UTC) Jason.nlw (talk) 15:15, 30 September 2021 (UTC) MasterRus21thCentury (talk) 20:22, 18 October 2021 (UTC) Newt713 (talk) 08:42, 13 March 2022 (UTC) Pierre Tribhou (talk) 08:00, 20 March 2022 (UTC) Powerek38 (talk) 17:21, 14 April 2022 (UTC) Ahatd (talk) 08:34, 4 August 2022 (UTC) JordanTimothyJames (talk) 00:54, 31 August 2022 (UTC) --Silviafanti (talk) 17:07, 14 September 2022 (UTC) Back ache (talk) 02:03, 1 November 2022 (UTC) AfricanLibrarian (talk) M.roszkowski (talk) 10:44, 4 January 2023 (UTC) Rhagfyr (talk) 19:36, 9 January 2023 (UTC) — Haseeb (talk) 13:10, 4 August 2023 (UTC) 沈澄心✉ 13:26, 15 November 2023 (UTC) MrBenjo (talk) 15:20, 23 April 2024 (UTC)
  Notified participants of WikiProject Authority control — MasterRus21thCentury (talk) 07:34, 16 January 2022 (UTC)
• @Jura1, Arbnos, MasterRus21thCentury:  Done --Tinker Bell ★ ♥ 20:47, 31 January 2022 (UTC)