merging two matrix into a single one

4 次查看（过去 30 天）
Mohammad Golam Kibria
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

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采纳的回答

Matt Fig
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
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
显示 3更早的评论
Andrei Bobrov
Andrei Bobrov 2011-6-15
L(K~=0) = K(K~=0)
Hi Mohammad! "<>" -> "~=" analog in other languages
Walter Roberson
Walter Roberson 2011-6-15
Oops... the symbolics use <> and I've been answering questions about those again.

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