Changeset: 43170885
add sqkm area
Closed by Aleks-Berlin
Tags
created_by | JOSM/1.5 (10966 de) |
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source | en.wikipedia.org |
Discussion
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Comment from Nakaner
Hi Aleks-Berlin,
why did you add the area of Russia in this changeset? This number can be retrieved by calculating and therefore does not have to be mapped at OSM.
I will remove this tag (and maybe all other occurences of sqkm=* you uploaded) in the next days.
In addition, I want to inform you that Wikipedia is not permitted as source because its license is not compatible and its users do not care for database copyright, they only care for the copyright of creative works. See https://wiki.openstreetmap.org/wiki/Welcome_to_Wikipedia_users#We_are_much_stricter_about_copyright for more information.
Best regards
Michael
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Comment from Aleks-Berlin
Hi Michael,
please read my points.
1. how to calc area of oceans (node, no borders) ?
2. all segments have to be in same orientation (e.g. clock wise) before calculation, which is not assured.
3. Huge Relations (e.g. russia.osm = 37 MB), that is much to download for get one number.
4. OSM has many questionable data: uniqe-keys (single usage), is_in:* (could be calculated too), etc.
5. www.wikidata.org is free: Creative-Commons-Lizenz CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
==> source could be made wikidata (sorry for this) -
Comment from Nakaner
HI Aleks-Berlin,
regarding item 1: If you want to calculate the land area, that's trivial. Even if you want to calculate the area on sea which belongs to Russian territory, it is simple.
regarding item 2: If you software is unable to calculate correctly if the orientation of the segments is wrong you either have to patch your software or fix this error in your OSM extract before doing the calculation (suggestion: use libosmium or buy a paid shape file).
regarding item 3: That's no argument. I think that Overpass API is able to handle such a request. Or you filter the relation out of the Russia extract from Geofabrik.
regarding item 4: That's no reason to introduce new questionable stuff.
Please remove all sqkm=* you added or I will do.
Best regards
Michael
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Comment from woodpeck
If I may add 2 points: (a) Just because there is rubbish in OSM, that's not an excuse to add more! (b) Wikidata is more often than not derived from Wikipedia which is licensed CC-BY-SA; I know that Wikidata claims to be CC0 but I highly doubt the legality of this.
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Comment from SimonPoole
It should be noted that the WMF does not make any representations that the contents of wikidata are actually free of any third party rights, The CC0 licence of wikidata is simply based on a position statement by the WMF that facts can't be copyrighted..
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Comment from Aleks-Berlin
again: how to calc the area of nodes (like place=ocean, that do not have any border) ?
Who should question the free usage of facts?
I understand that area can be calulated 'easy' for smaller objects. But why download megabytes to get one number?
With this argument we should stop overpass-turbo.eu, because anything can be done using planet.osm file. Sometimes a shortcut to information is usefull. Why not make it more comfortable? -
Comment from SimonPoole
You already have the comfort of looking up the value via the wikidata reference for not essential things (as for example the area).
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Comment from Nakaner
… and therefore there is no need anymore to add this information to OpenStreetMap because the object which represents the territory of Russia (relation 60189) already has wikidata=Q159.
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Comment from Aleks-Berlin
removed again for this relation, but todo (next days) for others
Relations (1)
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