Eigenvector ordering in PCA is broken

yzan · March 2021

When we order the eigenvectors in descending order, only the positive values are ordered in descending order while the negative values are ordered in ascending order (look at PC 2 for the illustration):

Image: https://us.v-cdn.net/6030995/uploads/editor/op/1u2dumt8rixy.png

ceaperez · March 2021

Yes, I have the same problem.

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Eigenvector ordering in PCA is broken

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