Hi! > For one reason...There are already tons of public LIDAR datasets with > point data down to millimeter. > I've even seen monuments and public art sculptures that have LIDAR > datasets down to millimeter precision using WGS84 base references.
OK, but: 1. For objects we store in wikidata, what exactly is known with this precision? E.g., if you have https://www.wikidata.org/wiki/Q5577191 - which part of it the coordinate specifies up to millimeter? That is a big monument, lots of possibilities. No way to know. 2. For objects we store in wikidata, this is probably not stable - even if we somehow defined that the point we know up to millimeter is the tip of Schiller's nose in Q5577191 - that probably would change with weather conditions, erosion, ground shifts, continental drift (on millimeter scale, that becomes relevant), etc. 3. For any practical use - such as querying - having data for one statue only with millimeter accuracy is useless, to really do some calculation where it matters all statues (or at least all statues, say, in New York - or at least most of them) should have such accuracy. That obviously won't be the case. For this reasons, I don't think millimeter accuracy would ever be relevant for Wikidata. > Having it all queryable in Wikidata ? hmmm... not for me, other data > catalogs and GIS systems handle that job. Exactly. -- Stas Malyshev [email protected] _______________________________________________ Wikidata mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata
