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How to remove redundant rows in a matrix

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Kyle
Kyle 2014-8-18
回答： Guillaume 2014-8-18
Suppose a matrix
1 2
3 4
5 6
3 4
5 7
4 3
row 2, 4, 6 are redundant, so how can I just leave either of them, then the matrix writes
1 2
3 4
5 6
5 7
The actual matrix is quite large, so I will need an automatic routine. Thank you for all suggestions.

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Guillaume
Guillaume 2014-8-18
If the order of the elements in a row does not matter (i.e row 6 == row 4):
unique(sort(m, 2), 'rows')
is what you want. If it does, it's just:
unique(m, 'rows')

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