Proper centerline between two lines

Hello @fikusas​ ,

Have you tried using the Densifier transformer to add vertices? More vertices may increase the accuracy of the CenterlineReplacer. Let me know if this helps!

Hi,

I've worked on something similar and used a combination of Snippers, counter and LineBuilder to get the job done.

Snipper let you produce vertices at an interval on both lines, you can play with the value here for precision. After that, I was giving an ID with the counter to group vertices on both lines together

Then I create a line with the LineBuilder grouped on those ID (making perpendicular lines). Then use the snipper with a 50% value and finally build a line with all those points.

@fikusas​  FME 2019 had a good overhaul of CenterlineReplacer, so make sure you are using FME 2019 or later. As @kailinatsafe​  suggests, adding a few extra points with Densifier before the Bufferer and making your Buffer Distance as small as you can might also help. Would you be able to share a small sample of the data?

Can you share a sample workspace?

I'm using FME 2020. Densifier doesn't do much in this case. See the attached workspace below.

I tried the densifier and chopper. Together it fixes your problem. See the attached workspace.

@fikusas​ You could try AreaOnAreaOverlayer instead of Dissolver (test for _overlaps >1) This will limit the CenterLineReplacer to a narrower band to work with and might give a more consistent result: