How can i find positions of sorted/unique values.

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Triveni
Triveni 2016-1-26
评论： Triveni 2016-1-26
p = [90 90 -45 0 0 45 45 0 -45];
q = p;
q(1+find(q(1:end-1)==q(2:end))) = [];
q = [90 -45 0 45 0 -45];
idx = [true diff(p)~=0];
q = p(idx);
i want to find positions of q according to p from right to left. Means [2 3 5 7 8 9]

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采纳的回答

Andrei Bobrov
Andrei Bobrov 2016-1-26
idx = fliplr([true, diff(fliplr(p))~=0]);
out = find(idx);

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