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erasing particular rows of a vector

Asked by Sabbas on 1 Aug 2012
Dear all,
I have
A=[
0;
2;
34;
45
0;
12;
23;
12;
0;
23]
and I want to erase the rows that contain zero and the element that follows immediately after zero
So I want to erase the elements [0,2], [0,12] and [0,23]
Note that zeros can appear anywhere in the vector. The above vector is a simple example
thanks

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2 Answers

Answer by Wayne King
on 1 Aug 2012
 Accepted Answer

indices = find(A==0);
indices = [indices; indices+1]
A(indices) = [];

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Answer by Albert Yam
on 1 Aug 2012

Look for the index of the elements that are zero. That is to say 'find' them. Once you have them, you know that those index '+1', are the rows that follow. Then remove them (all at once, or backwards).

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