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This answer on how to programatically create an arrow that forms along a curve is very useful.

I would like to know how to convert the arrow's tail into a dashed line, as shown below, but keeping the properties of a geometry node, so the arrow is easily editable.

dashed line extruded

dashed extruded arrow line

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you can use this node tree (old are muted, new are in the "new" group):

enter image description here

result:

enter image description here

and if you move the resample node to here:

enter image description here

it is smoother ;)

enter image description here

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    $\begingroup$ Thank you for this explanation! If anyone has trouble finding the "Align" node on the screen shot, its full name is "Align Euler to Vector" - it took me a while to spot it. $\endgroup$
    – tomh
    Oct 13, 2022 at 13:08

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