matrix insert with a condition

Question

JK 2019-5-17

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评论： Guillaume 2019-5-18

采纳的回答： Guillaume

can you help me insert m x n matrix into M x N matrix with a condition that is without zero.

starting location is (x,y)

M x N =

1 1 1 1 1 1 1 1 1 1

m x n =

0 2 2 0

2 2 2 2

0 2 2 0

(x,y) = (4,3)

M x N =

1 1 1 1 1 1 1 1 1 1

1 1 1 1 2 2 1 1 1 1

1 1 1 2 2 2 2 1 1 1

1 1 1 1 2 2 1 1 1 1

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Answer 1

Guillaume 2019-5-17

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https://ww2.mathworks.cn/matlabcentral/answers/462752-matrix-insert-with-a-condition#answer_375559

在 MATLAB Online 中打开

A = [1 1 1 1 1 1 1 1 1 1 
     1 1 1 1 1 1 1 1 1 1 
     1 1 1 1 1 1 1 1 1 1 
     1 1 1 1 1 1 1 1 1 1 
     1 1 1 1 1 1 1 1 1 1];
B = [0 2 2 0 
     2 2 2 2 
     0 2 2 0];
row = 3; col = 4;
toinsert = B + ~B .* A(row:row+size(B, 1)-1, col:col+size(B, 2)-1);
A(row:row+size(B, 1)-1, col:col+size(B, 2)-1) = toinsert