[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

Toni_001 added a comment. Hello. I stumbled over this ticket out of curiosity. Here my contribution: 1. GeoSPARQL [1], which defines the `geo:wktLiteral` datatype, does not mention the concept of precision. Therefore, the number of digits does not imply any precision (at least not when

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

Lucas_Werkmeister_WMDE added a comment. Revert merged and backported, hopefully in time for this week’s RDF dumps (if I read the cron config correctly, they start at 23:00, presumably UTC). TASK DETAIL https://phabricator.wikimedia.org/T174504 EMAIL PREFERENCES

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

Stashbot added a comment. Mentioned in SAL (#wikimedia-operations) [2019-10-07T19:09:33Z] Synchronized php-1.34.0-wmf.25/extensions/Wikibase: SWAT: [[gerrit:540419|Revert "Format coordinates with limited precision" (T174504 )]] (duration: 00m

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

Lydia_Pintscher added a comment. Thanks! :) TASK DETAIL https://phabricator.wikimedia.org/T174504 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Lydia_Pintscher Cc: Rishikumaralwal, Lucas_Werkmeister_WMDE, Lydia_Pintscher, WMDE-leszek, seav,

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

WMDE-leszek added a comment. https://gerrit.wikimedia.org/r/521984 has been reverted, see https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/540402 Reverting does not mean dismissing points brought up by @Smalyshev here and in T232984

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

thiemowmde added a comment. Thanks for the additional analysis. Another thing I realized later is that this might cause //actual// data loss in the Wikidata database. This can happen when a tool uses data it got from the query service to edit the original Wikidata entity. I believe this

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

Lucas_Werkmeister_WMDE added a comment. Personally, I think we should revert this change. I also don’t know why it was suddenly merged, but //if// we decide to do it, the implementation should take the specified precision of the coordinate value into account instead of hard-coding a certain

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

Lucas_Werkmeister_WMDE added a comment. Note that changing the exported precision in RDF does not invalidate the hash of the data values, so even if we revert the code change and all affected items are edited again, reduced-precision coordinates will remain in the query service until the

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

gerritbot added a comment. Change 521984 **merged** by jenkins-bot: [mediawiki/extensions/Wikibase@master] Format coordinates with limited precision https://gerrit.wikimedia.org/r/521984 TASK DETAIL https://phabricator.wikimedia.org/T174504 EMAIL PREFERENCES

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

gerritbot added a comment. Change 521984 had a related patch set uploaded (by Smalyshev; owner: Smalyshev): [mediawiki/extensions/Wikibase@master] Format coordinates with limited precision https://gerrit.wikimedia.org/r/521984 TASK DETAIL https://phabricator.wikimedia.org/T174504

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

Smalyshev added a comment. Now this bug has its own xkcd: https://xkcd.com/2170/ TASK DETAIL https://phabricator.wikimedia.org/T174504 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Smalyshev Cc: thiemowmde, daniel, Aklapper, Smalyshev,

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

thiemowmde added a comment. I can follow all your arguments. It's just that I think the effect of this (actually well defined) behavior on users is really, really negligible. Most users are never going to see coordinates as numbers anyway, but as dots or shapes on maps. And even if, which user

[Wikidata-bugs] [Maniphest] [Commented On] T174504: Coordinates are exported into RDF with excessive precision

Smalyshev added a comment. Mostly because most of these digits are not representing any real data, it's just junk produced by decimal representation with overly big precision and produced by various conversions and calculations. We're just dragging around those meaningless characters that do not