merging two matrix into a single one
显示 更早的评论
Hi,
I have two matrices.
j =
1 2 3
0 0 0
0 0 0
k =
0 0 0
0 0 0
4 1 7
I need the following matrix
l =
1 2 3
0 0 0
4 1 7
How to do that? Thanks
采纳的回答
Matt Fig
2011-6-15
J = [1 2 3;0 0 0;0 0 0];
K = [0 0 0;0 0 0;4 1 7];
L = max(J,K)
更多回答（1 个）
Walter Roberson
2011-6-15
J = [1 2 3;0 0 0;0 0 0];
K = [0 0 0;0 0 0;4 1 7];
L = J + K;
or
L = J; L(K<>0) = K(K<>0);
5 个评论
Mohammad Golam Kibria
2011-6-15
Matt Fig
2011-6-15
Walter, what is this: <>
Matt Fig
2011-6-15
@Mohammad, the idea is that the "correct" approach might be unknown to us because of the type of example posted. Two approaches might yield the same results on one set of data and not another...
Andrei Bobrov
2011-6-15
L(K~=0) = K(K~=0)
Hi Mohammad! "<>" -> "~=" analog in other languages
Walter Roberson
2011-6-15
Oops... the symbolics use <> and I've been answering questions about those again.
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2011-6-15
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