The value format is based on IIIF standard, pct corresponds to percent (so it it's possible to change the image file with an image at the same ratio but not the same dimensions in pixels) and w,x,y,z numbers delimit a rectangle. Example for Idleness (Q19953492), with depicts (P180) qualifier house cat (Q146) value "pct:65,81,35,15" → https://tools.wmflabs.org/zoomviewer/proxy.php?iiif=Godward_Idleness_1900.jpg/pct:65,81,35,15/,240/0/default.jpg .
A specific tool on Crotos IIIF Cropper can be used to get the adapted values. In the same tool, it's possible to display the result ; for example : depicted items in Ancient Rome (Q14619165). --Shonagon (talk) 01:18, 22 November 2016 (UTC)
- @Shonagon: I don't understand, it doesn't work, right? Tubezlob (🙋) 16:16, 6 October 2018 (UTC)
Second property needed
I just encountered this use of the property referring to a specific image file. As pointed out in the proposal discussion if we want to provide this functionality we need another property for that. --Marsupium (talk) 15:48, 19 September 2017 (UTC)
The user script: User:Husky/ifff-viewer-link.js turns values of this property into working web links, in the form: https://tools.wmflabs.org/zoomviewer/proxy.php?iiif=Godward_Idleness_1900.jpg/pct:65,81,35,15/full/0/default.jpg Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 12:14, 29 June 2018 (UTC)
Wikidata Image Positions tool
I wrote a new tool, Wikidata Image Positions, which shows the image areas indicated by this qualifier. You can view the image of a single item, or search for all items with a certain relative position within image (P2677) string, and I’ve set up that second mode as the formatter URL (P1630) for this property now: since relative position within image (P2677) values are usually unique, clicking the value will usually show you the image for the item that you came from. Let me know if you have any feedback, and of course, feel free to revert the formatter URL (P1630) change if you disagree with it :) --Lucas Werkmeister (talk) 17:45, 21 October 2018 (UTC)