Does the OpenStreetMap API set a limit on the number of nodes in a way?

Does the OpenStreetMap API set a limit on the number of members in a relation?

asked 20 Jul '10, 20:59

Sven%20L's gravatar image

Sven L
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Yes. Currently api set limit 2000 nodes per way. All api limit can be see in http://api.openstreetmap.org/api/0.6/capabilities.

Coastline and ofter that object that are over 2000 nodes length are typical divided around 500 node pieces. This make easier edit pieces, because you can add nodes to them.

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answered 20 Jul '10, 21:29

kallam's gravatar image

kallam
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accept rate: 50%

edited 21 Jul '10, 12:56

The number of nodes in a way is limited to 2,000. Just like other API limits, this is coded in the application.yml file in the rails port:

http://git.openstreetmap.org/?p=rails.git;a=blob;f=config/application.yml;hb=HEAD

There is currently no limit to number of elements in a relation, but it is possible that one could be added at a later time. You should certainly avoid ever having more than 2,000 members in a relation even if it is currently possible. Relations that big slow down editing and cause unnecessary waste of bandwidth.

For route relations or boundaries, make cascading relations if you're approaching a four-digit number of members. For multipolygon relations, split them in several parts.

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answered 20 Jul '10, 22:13

Frederik%20Ramm's gravatar image

Frederik Ramm ♦
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edited 20 Jul '10, 23:21

Tordanik's gravatar image

Tordanik
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2

Cascading relations are a bad idea. They are hard to understand and hard to work with in software. As far as I know, no software currently understands them. This problem should be solved on a different level.

(21 Jul '10, 06:45) Jochen Topf

JOSM understands cascading relations.

(22 Jul '10, 20:13) Paul Johnson

Use the following API call to find the limits. http://api.openstreetmap.org/api/0.6/capabilities

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answered 21 Jul '10, 09:56

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Firefishy
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question asked: 20 Jul '10, 20:59

question was seen: 6,777 times

last updated: 22 Jul '10, 20:13

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