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kilométrage de voies ferrées dena les données OpenStreetMap en France (au 13-07-2016)
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| select count(*), sum(st_length(st_transform(r.way,4326)::geography)), r.service from planet_osm_line r join planet_osm_polygon p on (st_intersects(r.way,p.way)) where r.railway='rail' and p.osm_id=-2202162 group by 3; | |
| count | sum | service | |
| -------+------------------+-------------- | |
| 54495 | 52672699.848765 | | |
| 6 | 863.600613716276 | industrial | |
| 18 | 31704.5442901028 | main | |
| 657 | 63642.8733992808 | crossover | |
| 14463 | 5710487.2771534 | yard | |
| 10976 | 4281735.35639498 | spur | |
| 3 | 721.627155530922 | spur; siding | |
| 12202 | 4199739.68653881 | siding | |
| (8 lignes) | |
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