Am 19.09.2015 um 10:27 schrieb Egon Willighagen:
On Tue, Sep 15, 2015 at 10:12 PM, Michael Peel <email@mikepeel.net mailto:email@mikepeel.net> wrote:
It seems to assume a default uncertainty on values, though: I just added the elevation above sea level to: https://www.wikidata.org/wiki/Q1513315 just specifying the central value, and it assumes that this value is +- 0.1 km - which isn't a good assumption to make...Did you mean to write 2.80 km about sea level? Then the error would be 0.01 km .... I am guessing the uncertainty follows the scientific notation of the number... 2.8 has the numeric uncertainty of (about) +/- 0.1...
That sounds like a reasonable approach to me...
Yes, the uncertainty follows the scientific convention about significant digits. We are currently thinking about adjusting this a bit, see https://phabricator.wikimedia.org/T105623