get rid off redundant values

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Shamim Al Mamun
Shamim Al Mamun 2016-7-4
编辑： Thorsten 2016-7-4
I have a matrix of thousands values. but i get same value in a multiple rows. i want to delete all this redundant values from this array. how can i make it?

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回答（2 个）

Walter Roberson
Walter Roberson 2016-7-4
mask = YourMatrix(:,:,3) == 0 & (YourMatrix(:,:,1) ~= 0 | YourMatrix(:,:,2) ~= 0);
YourMatrix(mask,:) = [];
  2 个评论
Shamim Al Mamun
Shamim Al Mamun 2016-7-4
Thanks a lot. but it says "Index exceeds matrix dimensions.". what's the problem walter.
Walter Roberson
Walter Roberson 2016-7-4
mask = YourMatrix(:,3) == 0 & (YourMatrix(:,1) ~= 0 | YourMatrix(:,2) ~= 0);
YourMatrix(mask,:) = [];

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Thorsten
Thorsten 2016-7-4
编辑：Thorsten 2016-7-4
B = unique(A, 'rows');
or, if you need the same order in the matrix
B = unique(A, 'rows', 'stable');

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