Jheald added a comment.
I just got bitten by this, as described here at WD:RAQ <https://www.wikidata.org/w/index.php?title=Wikidata:Request_a_query&oldid=1382623305#Scatterplot_query>. I was plotting a scatter-plot for the difference in coordinates between two different sources https://w.wiki/36Kk , and got a rogue point that was completely out of scale compared to everything else. It turned out that a lot of my items had the label "Manor Farmhouse", and the plot had added the value for all such items together. This is not behaviour that I would ever have expected, nor that I desired. It's a definite trap for the unwary -- and even for the wary, it's quite an unexpected burden to have to //ensure// that all the labels are different -- in so many queries, multiple values may slip past, introducing subtle undermining errors into the query output. This is a bug, not a feature, and it ought to be sorted out. I would also heartily support action on T185476 <https://phabricator.wikimedia.org/T185476> to allow more flexibility in the way WDQS columns are used as output. It is absurd that only one column can be chosen to describe the points (unlike eg the map display-mode, where multiple columns can be displayed), and it is also really really unhelpful that even that single column cannot be a URL or an item link. This is very poor, and essentially cripples the usefulness of the charts that can be output. TASK DETAIL https://phabricator.wikimedia.org/T168341 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Jheald Cc: Jheald, Aklapper, WikidataFacts, Fnielsen, MPhamWMF, maantietaja, CBogen, Akuckartz, ET4Eva, Nandana, Namenlos314, Lahi, Gq86, Darkminds3113, Lucas_Werkmeister_WMDE, GoranSMilovanovic, Mahir256, QZanden, EBjune, merbst, LawExplorer, Salgo60, Avner, Gehel, _jensen, rosalieper, Scott_WUaS, Jonas, FloNight, Xmlizer, abian, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Manybubbles, Lydia_Pintscher, Mbch331
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