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I'm working on a dataset that contains piano like clusters of lines that i want to merge into a single polygon per cluster.

Example from the source in autocad:

The end result will look the same but than it should be a polygon containing 3 features in stead of lines. So the line width contains information for making the polygon. But how do i group them together after or before i change them? Is there an (easy) way to group them with a certain buffer or would the neighbor finder be easier?

Hi @jdh009, how about this procedure?

  1. Bufferer: Create buffer area for each line so that the buffer areas belonging to the same group overlap each other.
  2. Dissolver: Dissolve the buffer areas.
  3. Counter: Add unique number (say group ID) to each dissolved area.
  4. SpatialFilter (or Clipper): Filter the original lines by the buffer areas to transfer group ID to the lines.

  5. HullAccumulator: Create hulls from the lines for each group, setting the group ID attribute to the Group By parameter.

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