Thanks for reply guys
The goal is actually following:
I'm converting simple image to SVG file and getting outer lines of it, as shown on screen. then I calculate the length of the lines in total, however I also need to convert the double lines (actually the parallel lines in example, but in most cases lines wil not be 100% parallel) to single line and have in SVG format so that I can also calculate the length of it.
Can you tell me if DrawSVG plugin can do it?
Thanks again in advance for your help