Creating centerline from set of lines

Hi @lazarlubomir, the CenterLineReplacer can help, you will probably need to adjust the result for your purposes.

Hope this helps.

@itay Yes, thank you! Anyway, CenterLineReplacer works only with polygon input, not with line input. So I need to know, if there is possibility to convert lines to polygons. And if create polygons, how can I reach to create polygons only from outside lines?

 

This is slightly trickier than just a CenterlineReplacer, but I solved it (at least for a simple test case) by generating buffers for my lines, using the Bufferer with a buffer size slightly larger than the maximum distance between parallel lines. Then do an AreaOnAreaOverlayer and count the overlaps, 2 overlapping buffers is what we're looking for, generating a centerline from that yields a more or less useful result, again in my simple test case.

centerline.fmw

check similar angle and closest neighbour. (if there is no data relation)

Matches can be grouped,.

Groups can be Bounding box Replaced, oriented.

From Bounding boxes extract centerline, which is easy math or easy for the centerline replacer.

For complex objects, more complex solutions required.