I missed the existence of "/metric/:source".

At first sight (my /guesstimate/...) it is not much used (/46 times it is 
associated to "width", 0 times with "length", and 413 times with "heigth"/), 
but it is actually used with that meaning (/the most used value is 
"estimated"/), and it could be a viable solution.

On the other hand I think that "source" is not the first thing (/word/) you 
think of (/I didn't.../) when you think of something to indicate the accuracy 
(/or lack thereof.../) of a measurement.

Even more, if you happen to know the accuracy of a measurement (/e.g: having 
taken into account the precision/bias of your instrument, mediated on "n" 
measurements and computed the standard deviation/), with metric:accuracy=* you 
can indicate its actual accuracy. If you "/eyeballed/" or, as we say in Italy, 
"/measured by spans/", you could instead indicate metric:accuracy=estimated.

"metric:source", I think, should be more used to indicate the instrument used 
(e.g. length:source= Bosch GLM 50 C) or the official source of a measurement 
(e.g.: height:source=ESA).

Cheers!


On 2018-11-13 21:58, Nick Bolten wrote:
> I like the ideas using height:source or height:accuracy, but want to point 
> out that they could imply different things.
>
> ...
>
> tl;dr: I really like metric:source=*.

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