[Wikidata-bugs] [Maniphest] T168341: Chart views sometimes combine multiple numeric results into one

[Vojtech.dostal]

Vojtech.dostal added a comment.


  This query looks OK in the "table view" but produces very similar, broken 
results in the scatterplot view:
  https://w.wiki/5YyN
  
  This is likely another manifestation of the bug.

TASK DETAIL
  https://phabricator.wikimedia.org/T168341

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To: Vojtech.dostal
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[Wikidata-bugs] [Maniphest] T168341: Chart views sometimes combine multiple numeric results into one

[Jheald]

Jheald added a comment.


  I just got bitten by this, as described here at WD:RAQ 
.
  
  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 
 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
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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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