Remove duplicate values, but keep the initial

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

Answer 1

[Stephen23]

>> 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

[James Boyle]

Perfect, thank you!

Answer 2

[Jan]

Or with https://www.mathworks.com/matlabcentral/fileexchange/41813-runlength:

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.