| 7 | | '''Delete unnecessary nodes from a way.''' |
| | 7 | **Reduce the number of nodes in a way, but keep the general shape.** |
| | 8 | |
| | 9 | |
| | 10 | == Implementation details == |
| | 11 | 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. |
| | 12 | |
| | 13 | The tool uses the [https://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. |
| | 14 | |
| | 15 | [[Image(Simplify_way.png,link=)]] |
| | 16 | |
| 10 | | |
| 11 | | [[Image(source:trunk/images/distribute.png,20)]] [Action/DistributeNodes Distribute Nodes] |
| | 19 | * [[Image(/pluginicon/SimplifyArea.jar/images/preferences/simplifyArea.png,24,link=,middle)]] 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 |
| | 20 | * area of the triangle ABC is lower than 5 m^2 |
| | 21 | * distance of B to the line AC is lower than 3 m |
| | 22 | * angle ABC doesn't deviate more than 10° from 180° |
| | 23 | * [[JOSMImage(distribute)]] [wikitr:/Help/Action/DistributeNodes Distribute Nodes] |
