Remove duplicate values, but keep the initial

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James Boyle
James Boyle on 28 Feb 2017
Commented: James Boyle on 1 Mar 2017
For example, i have
x = [0 0 0 1 1 0 0 0 1 0 1 0]
I want the index of the first zero or one, but not the duplicates.
So the vector should become:
0 1 0 1 0 1 0
Where the indices would be '1 4 6 9 10 11 12'
Thanks

Accepted Answer

Stephen23
Stephen23 on 28 Feb 2017
Edited: Stephen23 on 28 Feb 2017
>> x = [0,0,0,1,1,0,0,0,1,0,1,0];
>> idx = [1,1+find(diff(x)~=0)]
idx =
1 4 6 9 10 11 12
>> vec = x(idx)
vec =
0 1 0 1 0 1 0

More Answers (1)

Jan
Jan on 28 Feb 2017
x = [0 0 0 1 1 0 0 0 1 0 1 0]
[B, N, Index] = RunLength(x)
Then B contains the unique values and Index the indices.

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