Ah,
So vecreg isn't a "general purpose" transformation of vector fields? It's specifically meant for transforming a unit "axis" field and ensuring the output is also a unit "axis" field? (I say "axis" here instead of vector since the direction does not matter).
Just curious, could you have also done interpolation using a linear combination of the absolute values of the vectors and then normalize? I'm wondering why the outer product is necessary.
Thanks!
-Justin
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