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How to reorder matrix columns according to sortIdx() result?

Hi all.

I have two matrices of the same size (1 x ncols, vectors actually) and I need

  • one of them sorted in descending order
  • another one reordered according to the first one.

What is the most optimal method to do that?

cv::sortIdx() function gives me correct ordering, but I cannot figure out, how to use it for this task.