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POLYGONS TO EDGES AND NODES
===========================
Description
-----------
This algorithm creates:
- a lines layer corresponding to the edges (borders) of each feature of the polygon layer
- a points layer corresponding to the nodes of each feature of the polygons layer
Parameters
----------
- ``Polygons[Vector]``: polygons layer in input
Outputs
-------
- ``Edges[Vector]``: lines layer
- ``Nodes[Vector]``: points layer
See also
---------
Console usage
-------------
::
processing.runalg('saga:polygonstoedgesandnodes', polygons, edges, nodes)
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