[OSM-talk] The completeness of OpenStreetMap
osm at jonas-krueckel.de
Thu Jun 26 11:04:22 BST 2008
here in Germany we have one good-working system. See:
http://wiki.openstreetmap.org/index.php/W%C3%BCrzburg#Status (My city)
or http://wiki.openstreetmap.org/index.php/Landkreis_M%C3%BCnchen (where
the idea comes from)
Edward Johnson schrieb:
> I'm compiling some research into ways in which we can think of a map as complete and how complete OSM is. I was just wondering if anyone had any thoughts on the topic. My initial ideas have been posted on my blog http://edwardmjohnson.wordpress.com/ and I will continue to update this until I'm satisfied I know everything there is to know about the completeness of the map!
> One of the most interesting parts is how can we quote completeness of the map? My first thought was a stage system as quoted below
> * Preliminary stage - GPS tracks gathered or area has yahoo imagery.
> * Stage 1 - Nodes and ways mapped onto OSM using GPS track or aerial imagery.
> * Stage 2 - All roads named and roughly categorised
> * Stage 3 - Map good enough for satellite navigation. All one-way streets, and restrictions tagged along with accurate street categorisation.
> * Stage 4 - All POIs (i.e. post boxes, bus stops, pubs, restaurants, supermarkets etc.) tagged.
> These stages may or may not occur in sequential order and each stage can be quoted complete in terms of percentages. For example we might say that London is 100% complete for Preliminary and stages 1 and 2, but only 60% stage 3 complete and 20% stage 4 complete. The hard question is how do we accurately measure these percentages.
> What are other people's ideas?
> talk mailing list
> talk at openstreetmap.org
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