Vector Visualization Like Normal Display with Geometry Node Viewer Preview
When Preview Normal and Other Vector Data with Directions，Now It Only Shows Number in Overlays，Which May Not Make Sense
Normal Preview In Mesh Overlay Make Sense For Directional Vectore Display
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This can be done quite easily by instancing mesh lines to elements and setting the rotation with captured normals.
imgur.com/EF3icjd
I made a group for myself that has some extra options, like arrows instead of lines.