For conversions, see this example http://semantic-mediawiki.org/wiki/Berlin, the km2 is converted to sq mi using [[Corresponds to::]] http://semantic-mediawiki.org/w/index.php?title=Property:Area&action=edit

2012/4/5 Bináris <wikiposta@gmail.com>

Hi,

this is about the output format of numerical, money-type and date-type data. This is also language dependent; for example in Hungarian decimal sign is a comma rather then dot and the thousand separator is a space, not a comma. (In computer environment preferably a non breaking space.) Will the interface of Wikidata handle these national/local differences? I think this would be much more efficient than let the recipient projects transform data to their own format.

Some Wikipedias use templates to translate miles to kilometers and vice versa. This translation often fails due to a format error and results in funny values. (Example: a train station that is 31 km away from the town. [1]) As Wikidata has controlled data, the conversion of measurment units would be useful to solve locally, and serve data in the desired format. (A mile expressed in kilometers is also a piece of data that can be stored, but may perhaps need stronger protection as it has an effect on the outut of many other data -- such as a highly used template is editable for admins only.)

[1] http://en.wikipedia.org/w/index.php?title=Mez%C5%91keresztes&diff=next&oldid=159993221

--
Bináris

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