how to identify a split way

0	How can I identify if a new way (created tag element) is a result of a split way. What I would like to ultimately to do is flag all ways where nothing changed but only a split occured split way history asked 26 Jun '19, 13:42 Vincze 15●1●1●3 accept rate: 0%

One Answer:

It is not possible to do this "cleanly", but the following logic works in most cases:

if the changeset contains one or more new ways (version=1) and one or more modified ways (version > 1),
retrieve previous version of the modified way(s) and check if nodes have been removed from the way;
check if any of new ways contain the nodes that were removed from another way AND old and new way share one node;
if yes, it's a split.

Splits into multiple ways (and the reverse, the merging of ways) can be handled similarly.

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answered 26 Jun '19, 14:29

Frederik Ramm ♦
82.5k●92●720●1273
accept rate: 23%

any chance you got some python code to get me started with this? is there any project that you know of having this thing implemented?

(27 Jun '19, 13:06) Vincze

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Question tags:

way ×91
history ×89
split ×34

question asked: 26 Jun '19, 13:42

question was seen: 1,474 times

last updated: 27 Jun '19, 13:06