Wikidata:Property proposal/Wolfram Language unit code

Wolfram Language unit code edit

Originally proposed at Wikidata:Property proposal/Authority control

Done: Wolfram Language unit code (P7007) (Talk and documentation)

Description	input form for a unit of measurement in the Wolfram Language
Represents	unit of measurement (Q47574)
Data type	String
Domain	item, unit of measurement (Q47574)
Allowed values	string, product, division, power, `HoldForm[...]`
Example 1	metre (Q11573) → "Meters"
Example 2	metre per second (Q182429) → "Meters" / "Seconds"
Example 3	joule per cubic metre kelvin (Q3186734) → "Joules" / ("Meters"^3 * "KelvinsDifference")
Planned use	Build Wolfram Language (Q15241057) applications that represent values of type "quantity" as `Quantity[magnitude, unit]`. For instance, the mass (P2067) of Earth (Q2) is `Quantity[5972.37, "Yottagrams"]`. Without a mapping from Wikidata IDs to Wolfram Language units one could alternatively use the English label and rely on the `Quantity` parser, as in `Quantity[1, "yottagram"]` -> `Quantity[1, "Yottagrams"]`, but this is fragile (especially for uncommon units) and potentially slow.
See also	Wolfram Language entity code (P4839)

Motivation edit

This property will allow representing a value of type "quantity" as a Wolfram Language (Q15241057) native Quantity[magnitude, unit] object. It will facilitate the creation of WL applications because developers won't have to maintain their own mapping of Wikidata IDs to WL units. There are currently over 5000 unit of measurement (Q47574) in Wikidata:

SELECT ?unit ?unitLabel WHERE {
  ?unit wdt:P31/wdt:P279* wd:Q47574.
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}

Try it!

Some or all of them can potentially appear as the unit of a value and are therefore relevant for this property.

Toni 001 (talk) 10:59, 26 June 2019 (UTC)[reply]

Discussion edit

Support I guess this is distinct enough from the entity code, so sure. ArthurPSmith (talk) 17:31, 27 June 2019 (UTC)[reply]
Support Wolfram Language is trustworthy and important, this could be useful and won't go stale. --Ysangkok (talk) 22:27, 8 July 2019 (UTC)[reply]
Support --DannyS712 (talk) 11:06, 15 July 2019 (UTC)[reply]

Done @Toni 001, ArthurPSmith, Ysangkok, DannyS712: created as Wolfram Language unit code (P7007). Enjoy! --99of9 (talk) 11:54, 18 July 2019 (UTC)[reply]