On Wed, 31 Jul 2019 at 08:35, Warin <61sundow...@gmail.com> wrote: > > Err the wiki could state the default is kW. > There is no present default unit for power - see > https://wiki.openstreetmap.org/wiki/Map_Features/Units#Default_units > Adding a default would be good, and kW is probably the most universal in > this case, but for power generation MW is more universal. >
There have been sporadic discussions here about mapping the availability of USB charger outlets. A default of kW doesn't suit everything. But, assuming we agree that SI multipliers can be used, then sure, kW is a reasonable default. I would also propose that any value that defaults to any SI unit should allow SI multipliers. And the wiki could also state that a space is required between the numeric > values and the units, if any. > This is the case for all other units so the convention should be held. > It is certainly desirable that a space be there (in non-monospaced fonts, a good typographer would insert a thin space rather than a full space, this does conform to SI requirements for spacing). However, people are fallible and may omit the space for many reasons (didn't read the documentation, typo, etc.). It would be nice if editors (at a minimum, it could be applied to other steps in the chain too) applied Postel's robustness principle: "Be conservative in what you send, be liberal in what you accept." I.e., an editor would allow a user to enter "7kW" but would upload it as "7 kW." Some editors already strip superfluous spaces from values (of any kind) so this would not be a drastic break from what they currently do. -- Paul
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