call np.cross with 3D vectors only
#8993
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Thanks for all your work here @keewis ! |
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In the tests, we've been calling
np.crosswith vectors of 2 or 3 dimensions,numpy>=2will deprecate 2D vectors (plus, we're now raising on warnings). Thus, we 0-pad the inputs before generating the expected result (which generally should not change the outcome of the tests).For a later PR: add tests to check if
xr.crossworks if more than a single dimension is present, and pre-compute the expected result. Also, for property-based testing: the cross-product of two vectors is perpendicular to both input vectors (use the dot product to check that), and its length (l2-norm) is the product of the lengths of the input vectors.