exstract consecutive duplicate element of array
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Dear Dear I've got the folowing problem Given an A matrix nxm i need to exstract consecutive duplicate elements of array
so I mean if for excample the row n=n+1 =n+2 I want to get a matrix B obtainet from A less the rows duplicate
Antworten (2)
Stephen23
am 25 Okt. 2018
>> A = [1,2,3;1,2,7;3,4,9;9,9,9;7,7,7]
A =
1 2 3
1 2 7
3 4 9
9 9 9
7 7 7
>> B = A([true;all(diff(A,1,1)~=0,2)],:)
B =
1 2 3
3 4 9
7 7 7
jonas
am 25 Okt. 2018
Bearbeitet: jonas
am 25 Okt. 2018
A is your matrix. This line removes duplicates:
A([false diff(A)==0]) = [];
Or you could expand it to this, given your vague example from the comments
A =
1 2 3
1 2 7
3 4 9
_
mask = [ones(1,size(A,1));diff(A,1)] == 0;
A = A(sum(mask,2)==0,:)
A =
1 2 3
3 4 9
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