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I've these lines so when i want to point the middle by going to Vector > Geometry Tools > Centroid the point goes on the Straight line only, but when i have lines with curves the point doesn't goes with the line as you can see in the image.

How can i make the middle point going on the curve lines?

enter image description here

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1 Answer 1

Reset to default
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Use the "Interpolate point on line" tool from the Processing Toolbox (Ctrl+Alt+T):

enter image description here

Choose your line layer, and then find "Edit" in the dropdown for Distance:

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Enter $length / 2 as the expression.

enter image description here

Halfway-points appear:

enter image description here

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  • After clicking run no point shows in the lines idk why !!
    – Abdullah Muthanna
    Commented Jun 21, 2022 at 13:58
  • i don't know why there is no dot's only the new layer shows after clicking on run any solution ?
    – Abdullah Muthanna
    Commented Jun 21, 2022 at 15:25
  • 1
    Is it creating a new layer?
    – Spacedman
    Commented Jun 21, 2022 at 21:47
  • yes but without points
    – Abdullah Muthanna
    Commented Jul 2, 2022 at 12:30
  • any help !!!!!!
    – Abdullah Muthanna
    Commented Jul 5, 2022 at 10:13

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