Wikidata

Property talk:P154

Latest comment: 1 year ago by WolfgangFahl in topic Logos with non CC license
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Documentation

logo image
graphic mark or emblem commonly used by commercial enterprises, organizations and products
Representslogo (Q1886349)
Data typeCommons media file
Template parameterMany relevant infoboxes show a logo
Allowed values(?i).+\.(svg|png|jpg|jpeg|gif|tif|tiff|pdf|xcf|webp)
ExampleKansas City Royals (Q744530) → Kansas City Royals Insignia.svg
2018 MLS Cup playoffs (Q57954960) → 2018 MLS Cup Playoffs Logo RGB 4C ltbg.png
2018 MLS Cup playoffs (Q57954960) → 2018 MLS Cup Playoffs Logo RGB 4C fre ltbg.png
Apple (Q312) → Apple logo black.svg
Formatter URLhttps://commons.wikimedia.org/wiki/File:$1
Embed URLhttps://commons.wikimedia.org/wiki/File:$1
Tracking: sameno label (Q27673400)
Tracking: differencesno label (Q27673402)
Tracking: usageCategory:Pages using Wikidata property P154 (Q20117433)
Tracking: local yes, WD noCategory:Wikidata:P154 missing (Q27673401)
See alsoflag image (P41), coat of arms image (P94), seal image (P158), icon (P2910), image (P18)
Lists
Proposal discussionProposal discussion
Current uses
Total141,460
Main statement141,02399.7% of uses
Qualifier3790.3% of uses
Reference58<0.1% of uses
[create Create a translatable help page (preferably in English) for this property to be included here]
 
Conflicts with “instance of (P31): Wikimedia disambiguation page (Q4167410), Wikimedia category (Q4167836)”: this property must not be used with the listed properties and values. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Conflicts with P31, SPARQL
 
Link to Commons namespace “File”: this property should contain a well-formed link to an existing page on Wikimedia Commons. (Help)
List of violations of this constraint: Database reports/Constraint violations/P154#Commons link, hourly updated report
 
Format “(?i).+\.(svg|png|jpg|jpeg|gif|tif|tiff|pdf|xcf|webp)”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*[Cc]oat of [Aa]rms).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Tbilisi State University (Q37008), Australian Government (Q2991162)
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\bC[oO]A\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: State University of Trade and Economics (Q694219)
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*[Aa]rmoiries).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*[Bb]la[zs]on).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*[Bb]andeira).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: São Félix do Coribe (Q1794977)
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*[Bb]ras[Aã]o).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*[Ee]scut).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*[Vv]apen).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*[Ww]appen).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Hugo Schneider AG (Q473429), KONPLOTT (Q1781864), General Dutch Fascist League (Q1810535), ESV Olympia Köln (Q15807044), Düsseldorfer Automobil- und Motorsport-Club 05 (Q1272349)
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Ss]eal\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Pinellas County (Q494556), MariaDB (Q787177), Naval Meteorology and Oceanography Command (Q6981869)
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Ss]ello\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Ss]ceau\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Ss]iegel\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Ff]lag\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Auvergne (Q1152), Metropolitan line (Q19891), Bakerloo line (Q19892), League of Nations (Q38130), Victoria line (Q203030), Central line (Q205355), Piccadilly line (Q207689), Waterloo & City line (Q207699), Circle line (Q210321), District line (Q211265), Northern line (Q214793), Party of the Revolution (Q652091), Six Flags (Q824278), Jubilee line (Q961290), Popular Assembly (Q2012277), Dominican Liberation Party (Q2511535), Communist Party of Australia (1971-) (Q2590329), Kiten (Q2706102), March 26 Movement (Q3123247), RequestPolicy (Q4048187)
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Dd]rapeau\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Bb]andiera\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Ff]lagge\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Bb]andera\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Bb]andeira\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Format “^(?!.*\b[Vv]lag\b).*$”: value must be formatted using this pattern (PCRE syntax). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Format, SPARQL
 
Single best value: this property generally contains a single value. If there are several, one would have preferred rank (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#single best value, SPARQL
 
 
Qualifiers “language of work or name (P407), country (P17), start time (P580), end time (P582), point in time (P585), reason for preferred rank (P7452), reason for deprecated rank (P2241), statement is subject of (P805), object of statement has role (P3831), applies to part, aspect, or form (P518), applies to jurisdiction (P1001), nature of statement (P5102), media legend (P2096), writing system (P282), applies to name of subject (P5168), of (P642), designed by (P287), has use (P366), latest start date (P8555), earliest date (P1319), earliest end date (P8554), latest date (P1326), for color scheme (P8798), color (P462), has part(s) (P527), typeface/font used (P2739), subject named as (P1810), depicts (P180), related image (P6802), non-free artwork image URL (P6500), has characteristic (P1552), copyright license (P275), published in (P1433), applies to work (P10663), copyright status (P6216), does not have characteristic (P6477), identified in image by (P7380)”: this property should be used only with the listed qualifiers. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#allowed qualifiers, SPARQL
 
Allowed entity types are Wikibase item (Q29934200), Wikibase MediaInfo (Q59712033): the property may only be used on a certain entity type (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Entity types
 
Scope is as main value (Q54828448), as qualifier (Q54828449): the property must be used by specified way only (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P154#Scope, SPARQL
 
This property is being used by:

Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)


Logo on Wikipedias

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Latest comment: 11 years ago1 comment1 person in discussion

Are we not suppose to put the interwiki links of the non-free files on WD? If it is allowed, do we need a new items type property for logos like Q11213018 (logo of Q192452)--L!tt|e+ung?\2o/3=] 02:52, 26 April 2013 (UTC)Reply

Logo as Item

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Latest comment: 9 years ago3 comments2 people in discussion

Is there already a way (another property) to set items as values for "logo"? For example Linux (Q388) could set the item Tux (Q131200) as Logo too, instead of only a file on Commons. At least this problem isn't new, but maybe I've misses something.
Best regards, --#Reaper (talk) 12:40, 23 December 2014 (UTC) (Please ping me on answers.)Reply

Constraint:Type with class Q43229 (Organisation)

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Latest comment: 8 years ago4 comments4 people in discussion

Above there is set a Constraint:Type with the class organization (Q43229). It says that logo image (P154) can or should only be used when the item is an instance of organization (Q43229) (or an subclass of this). But at least that is wrong. Also software, products, websites, sport clubs or whatever can have an logo. So we should remove that constraint completely, as I think it's not possible or not useful to catch all variations.
Best regards, --#Reaper (talk) 12:48, 23 December 2014 (UTC) (Please ping me an answers.)Reply

Agreed. I removed constraint on type "organization (Q43229), product (Q2424752), trademark (Q167270)", 80% violations according to the last violations report considering it. -- LaddΩ chat ;) 15:08, 20 December 2015 (UTC)Reply

Unique value constraint

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Latest comment: 5 years ago3 comments3 people in discussion

I don't think this property should have a unique value constraint. If you look at the violations you can see that the same logo can be used by multiple entities, for example subsidiaries or successor organizations. I suggest to remove this constraint. --Srittau (talk) 02:52, 31 December 2015 (UTC)Reply

OK with me. -- LaddΩ chat ;) 16:35, 31 December 2015 (UTC)Reply
  Done --MB-one (talk) 14:26, 13 April 2019 (UTC)Reply

png or svg for Wikimedia sites?

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Latest comment: 7 years ago1 comment1 person in discussion

We have consensus on official website (P856) that must be https://(code).(wikiproject).org/, but how about logos? I can't see any consensus here. --Liuxinyu970226 (talk) 04:05, 3 July 2017 (UTC)Reply

Property to know wether the logo include the name or not

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Latest comment: 6 years ago2 comments2 people in discussion

Some logos include the name of the trademark, other not. It would be nice to have a property to tell whether or not the logo includes this text. What do you think? Romain2boss (talk) 22:25, 14 February 2018 (UTC)Reply

@Romain2boss: For what propose? Copyvio checker? --Liuxinyu970226 (talk) 02:31, 30 June 2018 (UTC)Reply

Allowed qualifiers constraint

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Latest comment: 1 year ago2 comments2 people in discussion

In an effort to add a little bit of order and consistency, I've added a allowed qualifiers constraint (Q21510851) to this property. I've included every property I can think of that makes sense to use with this, but it's likely I missed some (the SPARQL query to view violations of this constraint times out, even with LIMIT 100). I haven't made it a mandatory constraint (Q21502408), though perhaps that should eventually be done once the list of allowed qualifiers is nailed down. –IagoQnsi (talk) 21:25, 17 August 2020 (UTC)Reply

Would you consider allowing described at URL (P973)? It would link to an organization's logo description and branding guidelines. Senator2029 11:21, 10 December 2022 (UTC)Reply

Logos with non CC license

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Latest comment: 1 year ago5 comments3 people in discussion

The current Datatype "Commons media file" restricts this property to Logos with CC license. Therefore e.g. only 15% of all universities have a logo property at this time. For an institution such as L3S with the logo readily available at:

https://www.l3s.de/sites/default/files/L3S_Logo_2013_rgb_400x400.png The logo information may not be added to wikidata for this restriction. I'd love to see the datatype be relaxed and instead a logo_license additional information be enforced so that URLs may only be added when including the license information. "Fair use" is quite common for such logo licenses and some commercial organizations will put other restrictions on how to use the logo put readily describe these rules under a page reachable via an URL.

see e.g. https://www.ibm.com/legal/copytrade and https://www.ibm.com/brand/experience-guides/developer/brand/logo/ The https://commons.wikimedia.org/wiki/File:IBM_logo.svg statement This logo image consists only of simple geometric shapes or text. It does not meet the threshold of originality needed for copyright protection, and is therefore in the public domain. is IMHO a bit bold and not applicable for most logo license situations and only being able reference logo images under such circumstances does IMHO limit the capabilities of wikidata in supplying metadata too much.

Do i have to start a property proposal for this or has there been a past discussion on this issue that i have missed?

Example: University Logos

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sparqlquery -qp wikidata.yaml -qn UniversityLogos -f mediawiki

query

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# University Logos
# WF 2023-03-11
SELECT ?item ?itemLabel ?logo
WHERE
{
  ?item wdt:P31 wd:Q3918.
  ?item rdfs:label ?itemLabel.
  FILTER(LANG(?itemLabel)="en")
  ?item wdt:P154 ?logo
}
ORDER BY ?itemLabel

try it!

result

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item itemLabel logo
http://www.wikidata.org/entity/Q4649771 AAB University http://commons.wikimedia.org/wiki/Special:FilePath/Kolegji%20AAB.png
http://www.wikidata.org/entity/Q18349393 ABES Institute of Technology http://commons.wikimedia.org/wiki/Special:FilePath/ABES%20Institute%20of%20Technology%20Logo.jpg
http://www.wikidata.org/entity/Q4654207 ASERI – Postgraduate School of Economics and International Relations http://commons.wikimedia.org/wiki/Special:FilePath/ASERI%20Logo.jpg
http://www.wikidata.org/entity/Q601956 Aalborg University http://commons.wikimedia.org/wiki/Special:FilePath/Universit%C3%A4t%20Aalborg%20Logo.svg
http://www.wikidata.org/entity/Q2591673 Aalto University School of Arts, Design and Architecture http://commons.wikimedia.org/wiki/Special:FilePath/Aalto%20University%20School%20of%20Art%20and%20Design.svg
http://www.wikidata.org/entity/Q4670157 Abu Dhabi University http://commons.wikimedia.org/wiki/Special:FilePath/Abu%20Dhabi%20University%20logo.svg
http://www.wikidata.org/entity/Q2822225 Academy of Art University http://commons.wikimedia.org/wiki/Special:FilePath/AcademyArtUnivLogo.png
...
http://www.wikidata.org/entity/Q1412435 Óbuda University http://commons.wikimedia.org/wiki/Special:FilePath/%C3%93budai%20Egyetem%20cimere.jpg
http://www.wikidata.org/entity/Q6082132 İstanbul Topkapı University http://commons.wikimedia.org/wiki/Special:FilePath/%C4%B0stanbul%20Topkap%C4%B1%20%C3%9Cniversitesi%20logo.svg
http://www.wikidata.org/entity/Q1784353 Šiauliai University http://commons.wikimedia.org/wiki/Special:FilePath/Siauliai%20university%20logo.jpg
http://www.wikidata.org/entity/Q653439 Ștefan cel Mare University of Suceava http://commons.wikimedia.org/wiki/Special:FilePath/%C8%98tefan%20cel%20Mare%20University%20of%20Suceava%20logo.svg

WolfgangFahl (talk) 13:54, 16 March 2023 (UTC)Reply

A general logo URL property as subproperty of logo image (P154) and non-free artwork image URL (P6500) would be useful indeed. I'd object a property restricted to specific subjects such as podcast logo URL (P10286). We could extend the latter instead, so no new property has to be created. -- JakobVoss (talk) 06:52, 20 March 2023 (UTC)Reply
What needs to be done to get this general logo URL prroperty? Is a simple rename of podcast logo URL and changing the settings for that propery sufficient? WolfgangFahl (talk) 06:32, 1 April 2023 (UTC)Reply
If it were up to me the solution would be to migrate away from the specific properties like podcast logo URL (P10286) and instead use non-free artwork image URL (P6500) for this use. So I am in total agreement with Jakob. Fox (talk) 08:52, 19 May 2023 (UTC)Reply
See also https://en.wikipedia.org/wiki/Template:Non-free_logo - which might be a way to semia-automatically link wikidata items with logos. WolfgangFahl (talk) 09:11, 19 May 2023 (UTC)Reply
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