Sort matrix A from least to greatest and have corresponding entries in matrix B move to equal positions

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Rebecca 2012-6-14

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I am writing a program, and need it to sort one matrix, A, from least to greatest (which I know how to do). However, I also need the corresponding entries in matrix B to move to the same positions as those in A. Entries in matrix B are identifiers for something that I will need to use later in the program, and I am only interested in the one that goes with the smallest value from A. Is there a simple way to do this (like combining A and B, maybe sorting the columns?)? Thank you for the help!

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Answer 1

Titus Edelhofer 2012-6-14

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Hi,

there are two ways: either combine them into one matrix and use sortrows, the other is to sort A and call sort with two output arguments. The second output argument is the reordering, i.e., so either

AB = sortrows([A B]);

or