André, that's correct but do you happen to know why "distance" was selected for route and waterway length then?
Cheers, Eugene вт, 29 янв. 2019 г. в 22:41, André Pirard <a.pir...@ulg.ac.be>: > On 2019-01-29 16:37, Eugene Podshivalov wrote: > > Hi all, > The relation:waterway wiki page > <https://wiki.openstreetmap.org/wiki/Relation:waterway> recommends using > "distance" tag for "the total length of river in km". Was there any > discussion of this choice? > It seems a bit incorrect and confusing, because "distance" is more > suitable for routes as discribed on its proper page > <https://wiki.openstreetmap.org/wiki/Key:distance>. The existing "length" > tag would fit better, woudn't it? > > Cheers, > Eugene > > A *distance* is the length of the straight line between two points or, > for that matter, the two ends of any line. > They can be *far* or *near*. > The *length* of a line is the number of meters that your odometer > measures if you follow every bend of it. > Mathematically, it is the sum of the lengths of tiny slices of the line > that can be taken as straight (and the shorter the straighter, that's > "infinitesimal analysis" but don't tell anybody). > That is what is called "traveling a *long* road". > So, to go from one point to another, you may follow two routes one of > which is *longer* than the other and, yet, you won't have moved any > *farther* (no more *distantly* if I may say). > > So, it is a mistake to talk of the distance of a *route*, it is a *length* > . > And be it macadam, water, rail or cycling or footing etc., it doesn't > change anything to that. > > All the best, > > André. >
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