HELP copy matrix and inserting in another matrix
显示 更早的评论
Hello guys, i have a matrix
U=(416,411)
and i need to make a matrix
W=zeros(416+2,411+2)
and then i need to copy the matrix U inside the matrix W, so the borders of this new matrix become full of zeros, or in anothers words matrix U surrended by zeros.
For example:
[0 0 0 0 ...
0 1 1 0 ...
0 0 0 0]
´
thanks in advance
采纳的回答
dpb
2015-1-2
W(2:end-1,2:end-1)=U;
using the fact size(W you already created is size(U)+2 and you wanted it centered. If it weren't centered, then the generic expression is written based on the size of U instead of W...
r1=2; c1=2 % row column starting points in target
[nr,nc]=size(U);
r2=r1+nr-1: c2=c1+nc-1; % end positions in W
W(r1:r2,c1:c2)=U;
The rule is the size() of the LHS addressing expression has to match that of the RHS.
更多回答（1 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
