Hi!

> transformation to WGS84. Some places like important peaks or astronomy
> observatories can be located with such precision.

True, but this probably won't be kept up-to-date and most likely would
be useless for Wikidata users since random very precise data can not be
relied on unless there's a guarantee certain set of data (e.g. all
observatories) have the same accuracy and it is kept up-to-date. Which
Wikidata does not have.

> So I am generally against limiting the number of digits too much, but
> limit it to something like millimeter precision sounds reasonable.

I think we should at least limit it to specified precision (not the case
today) but maybe even more in case precision is too high. I don't think
anything beyond 1m is really useful - please provide use cases if you
think otherwise.

Also, wikibase:geoPrecision seems to be completely useless in the form
it exists now. Is anybody actually using this value, and if so, how? If
not, I'll probably change how it works.
-- 
Stas Malyshev
[email protected]

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