Create polygon from parallel to line

Buffer points by 0.75, use the buffered points to clip the line, then buffer again by 0.75 with end type None (edited as i wrote incorrectly originally)

ebygomm, would you mind to attach the fmw ? I still have troubles to attain the same result. What version of FME are you using ?

​@katta The End Cap Style in the 2nd Bufferer should be “None”

Buffer points by 0.75, use the buffered points to clip the line, then buffer again by 0.75 with square ends

 

That’s brilliant!

Such a simple and elegant solution!

​@katta If this solution works for you, you can mark this question solved.

Hi ​@ebygomm , I have a question for some special cases. In this case (see screenshot) I can’t create a polygon parallel to the line because of the change of bearing at the point. How can I create it parallel to one segment only (the segment I want to choose depends on some specific attribute values) ?

Hi ​@katta I think you’ll first need to test if the clipped line is straight or not. I’ve done this with a LineCloser, AreaCalculator, and a Tester.  If it’s area is GT 0, then the line isn’t straight and the Chopper reduces the clipped line to line segments, then the Sampler takes the first segment and the LineExtender extends it enough to cross the first round buffer.