[Tagging] incline default unit ?

fly lowflight66 at googlemail.com
Mon Aug 12 20:44:24 UTC 2013

On 12.08.2013 22:21, Alberto wrote:
> The percent sign % or degree sign ° should always be specified in OSM,
> otherwise the risk of ambiguities is too high.
> Anyway, on scientific side, if you express a ratio in percentage you must
> always postpone the % sign. Ratio is a pure number, true, but if you don't
> use the % notation, 10% must be written 0.10, 15% becomes 0.15 and 100%
> becomes 1.00.
> If you write 10 without % it does not mean a ratio of 10% but 1000%.

Thanks Alberto

You are totally right.

My conclusion so far:

* do not talk about a unit
* always use percentage or degree sign
* if you ommit the percentage sign you should write the true value (.10
or .08)

Can we state this on the wiki and bring it to the editors ?


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