How to extract parts of an array by given logical conditions?

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Emerson De Souza 2014-6-9

评论： Emerson De Souza 2014-6-9

Hi, I have an array, let's say

1 1 0

1 2 0

1 3 1

2 1 0

2 2 1

2 3 1

and I would like to create a new array only with the case for which the value of the third column equals 1. Thus

1 3 1

2 2 1

2 3 1

Image Analyst 2014-6-9

Try this:

M=[...
1 1 0
1 2 0
1 3 1
2 1 0
2 2 1
2 3 1]
rowsToExtract = M(:,3)==1;
N = M(rowsToExtract,:)

Emerson De Souza 2014-6-9

Thank you Image Analyst,

your suggestion elegantly solved my problem.

Wish you a nice day

Emerson

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