I need to create a set of points with a fixed spacing and given distance from a a georeferenced coastline. My idea is trying to obtain a parallel line and then placing points on it. To do the first I tried using the Offset lines tool, but the processing gets stuck/really slow: apparently it's because of the small distance I need to set and the complex geometry of the coastline.

Is there any faster way to do this?

  • What if you smoothed the coastline first and then ran the same process. This should simplify the coastline geometry? Apr 15 '18 at 19:05
  • I've already tried, I launched the processing on a smoothed coastline and still gets stuck. I'm a bit worried about computing time since I have to repeat this with a set of distances... As for smoothing, I'm using SAGA's 'Line smoothing' tool (found it somewhat more effective than the QGIS one), still can't get rid of some recesses/harbors though. What should I do?
    – fede_
    Apr 15 '18 at 19:57
  • Smoothing actually adds vertices - you probably want to run "simplify" instead.
    – ndawson
    Apr 15 '18 at 20:41
  • Thanks, that did the trick! I didn't know that function.
    – fede_
    Apr 15 '18 at 21:43

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