How to find elements in an array based on a search from another array.

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Denilson
Denilson 2017-2-11
评论： Denilson 2017-2-11
Imagine that i have two arrays:
a= [1 1 1 1 5 5 5 5 5 5 8 8;
1 1 1 3 5 5 5 5 5 8 8 8;
1 1 3 3 3 5 5 5 8 8 8 8;
1 3 3 3 3 3 5 8 8 8 8 8;
4 4 4 9 9 0 3 3 8 8 8 8;
4 4 4 9 0 0 3 3 3 3 8 8;
4 4 9 9 0 0 0 0 0 0 1 1;
4 9 9 9 0 0 0 0 0 0 1 1;
9 9 9 9 9 0 0 0 7 7 7 7]
b = [4 5 7]
I want ans like this :
ans =
0 0 0 0 1 1 1 1 1 1 0 0
0 0 0 0 1 1 1 1 1 0 0 0
0 0 0 0 0 1 1 1 0 0 0 0
0 0 0 0 0 0 1 0 0 0 0 0
1 1 1 0 0 0 0 0 0 0 0 0
1 1 1 0 0 0 0 0 0 0 0 0
1 1 0 0 0 0 0 0 0 0 0 0
1 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 1 1 1 1
My "b" has more than 500 elements and my "a" is a satellite image.

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采纳的回答

Guillaume
Guillaume 2017-2-11
ismember(a, b)

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