Keep Right/020 multiple nodes on the same spot

From OpenStreetMap Wiki
Jump to: navigation, search

Message: There is more than one node in this spot. Offending node IDs: $1

There are multiple nodes on same spot. In case of roads, it means that roads are not connected and routing programs will fail to route on such intersection. In some cases this is caused by duplicate uploads from JOSM (if you cancel during upload and upload again). In other cases it is caused by incorrect imports from other databases.

Author's comment:

  • In contrast to earlier implementations of this check there is no tolerance window any more. So only nodes on exactly the same coordinates are considered an error. People tend to add more and more detailed features so precision increased over time and nowadays any minimum allowed distance greater than zero may be too large.
  • This check now respects the ele=* tag in one special case to avoid false positives: Consider multiple nodes on the same lat/lon coordinates but with different elevation. If (and only if) nodes on the same lat/lon coordinates have unique ele values then no error is raised. This can happen at towers for example.
Continent World Africa America-Canada America-Central America-South America-US Asia Australia-Oceania Europe
20150907 8,253,451 306,333 391,038 57,314 31,940 1,963,221 863,911 2,693,570 1,946,123
20141230 8,574,667 270,344 356,494 21,964 155,424 2,162,859 1,098,383 2,535,399 1,973,800
20140423 7,047,882 113,464 358,923 22,618 74,145 2,095,751 756,606 1,190,519 2,435,856
20131003 7,658,393 212,368 223,840 25,376 83,063 2,201,125 786,055 1,247,947 2,878,619
20130710 7,545,706 151,363 212,694 20,817 63,709 2,231,719 820,260 1,175,531 2,869,613
20130116 6,823,398 111,546 332,304 20,133 66,119 2,305,347 937,639 75,133 2,975,177
20121112 5,752,714 101,821 317,815 21,527 85,984 2,342,881 678,282 59,994 2,144,409
20121015 4,685,026 114,705 322,638 21,437 91,523 2,374,398 661,720 48,889 1,049,715
20120926 4,373,338 101,375 317,260 24,960 82,083 2,366,374 689,881 33,255 758,149
20120917 4,346,838 131,479 131,497 144,614 84,017 2,342,540 559,030 152,939 712,809
20120913 4,335,829 131,549 130,026 145,101 84,984 2,342,751 558,557 150,912 704,072