[[TranslatedPages]]
= Tools > Simplify Way =
[[JOSMImage(simplify)]] ''Keyboard shortcut:'' '''{{{Shift+Y}}}'''
'''Reduce the number of nodes in a way, but keep the general shape.'''
== Implementation details ==
After simplification, all of the deleted nodes will be closer than the in the popup specifed distance (e.g. 3 m) to the simplified way. In other words, the old and the new way will never be more than e.g. 3 m apart.
The tool uses the [http://en.wikipedia.org/wiki/Ramer–Douglas–Peucker_algorithm Ramer–Douglas–Peucker algorithm] for way simplification, but makes sure that tagged nodes and nodes with more than one parent way are not deleted.
[[Image(Simplify_way.png)]]
== See also ==
* [[Image(/pluginicon/SimplifyArea.jar/images/preferences/simplifyArea.png,20)]] SimplifyArea plugin - despite the name, also simplifies ways. Uses a different algorithm and has more parameters for tuning. In particular for nodes A, B, C the node B is not deleted unless
* area of the triangle ABC is lower than 5 m^2
* distance of B to the line AC is lower than 3 m
* angle ABC doesn't deviate more than 10° from 180°
* [[JOSMImage(distribute,20)]] [DistributeNodes Distribute Nodes]
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