At the IRC hour on Structured Data for Commons tonight, (log: https://tools.wmflabs.org/meetbot/wikimedia-office/2014/wikimedia-office.201... )
Susanna gave the link to the impressive Wikimaps metadata spreadsheet, https://docs.google.com/spreadsheets/d/1Hn8VQ1rBgXj3avkUktjychEhluLQQJl5v6WR...
but this made me wonder: is every single map notable, in the sense of meriting its own Wikidata Q-number ?
For example, consider https://commons.wikimedia.org/wiki/Category:England_Delineated_%281800%29_by...
a set of fairly simple sketch maps of English counties, published in a schoolbook in 1790.
Should each map individually have a Q-number ? Or instead, should just the book and the edition have Q-numbers ?
The question is similar to that of books of engravings, such as eg https://commons.wikimedia.org/wiki/Category:Views_of_the_Seats_of_Noblemen_a...
Should each engraving have an individual Q-number ? Or instead, just the book and the edition, with details specific to the individual engraving (of which we may have more than one scan) kept on the CommonsData page for the file ?
For maps there is some clear per-map metadata, even when they are part of a set -- for example location, bounding boxes, etc.
Is it right to assume that there will always be a WikiData item for this to live in? Or in some cases, would it have to live on CommonsData? And will a copy of it need to live on CommonsData anyway, to facilitate rapid sorting / filtering of a collection of images ?
Have there been any discussions that we know of in the Wikidata community about this?
-- James.