MATLAB中将一个矩阵扩展 如何用matlab扩展矩阵？ 比如A[1,1;0,0],想每...
matlab\u4e2d\u5982\u4f55\u5bf9\u4e00\u4e2a\u77e9\u9635\u6269\u5c55\u4e0b\u554a\uff1f\u7528\u6cd5\uff1aB = imresize(A,m)
B = imresize(A,m,method)
B = imresize(A,[mrows ncols],method)
B = imresize(...,method,n)
B = imresize(...,method,h)
imrersize\u51fd\u6570\u4f7f\u7528\u7531\u53c2\u6570method\u6307\u5b9a\u7684\u63d2\u503c\u8fd0\u7b97\u6765\u6539\u53d8\u56fe\u50cf\u7684\u5927\u5c0f.method\u7684\u51e0\u79cd\u53ef\u9009\u503c\uff1a
book.iLoveMatlab.cn
'nearest'(\u9ed8\u8ba4\u503c)\u6700\u8fd1\u90bb\u63d2\u503c
'bilinear'\u53cc\u7ebf\u6027\u63d2\u503c
'bicubic'\u53cc\u4e09\u6b21\u63d2\u503c
B = imresize(A,m)\u8868\u793a\u628a\u56fe\u50cfA\u653e\u5927m\u500d
B = imresize(...,method,h)\u4e2d\u7684h\u53ef\u4ee5\u662f\u4efb\u610f\u4e00\u4e2aFIR\u6ee4\u6ce2\u5668(h\u901a\u5e38\u7531\u51fd\u6570ftrans2\u3001fwind1\u3001fwind2\u3001\u6216fsamp2\u7b49\u751f\u6210\u7684\u4e8c\u7ef4FIR\u6ee4\u6ce2\u5668).
n = 3; //\u4efb\u610f\u500d\u6570
[r c] = size(a); //\u4efb\u610f\u77e9\u9635
for i = 1 : r
for j = 1 : c
b(n*(i-1)+1 : n*(i-1)+n,n*(j-1)+1 : n*(j-1)+n) = a(i,j)*ones(n,n);
end
end
你要扩展,可以这样:
>>A=[1 2;3 4;2 4;5 5];
>>B=zeros(4,2);
>>C=[A,B]
C=
1 2 0 0
3 4 0 0
2 4 0 0
5 5 0 0
>>C(3,:)=[];C
C=
1 2 0 0
3 4 0 0
5 5 0 0
>>D=[B,A]
D=
0 0 1 2
0 0 3 4
0 0 2 4
0 0 5 5
>>D(3,:)=[];D
D=
0 0 1 2
0 0 3 4
0 0 5 5
要扩展成：B=[1 2 0 0;3 4 0 0;5 5 0 0];
A=[1 2;3 4;2 4;5 5];
C=zeros(4,2);
B=[A,C]
若是扩展成B=[0 0 1 2;0 0 3 4;0 0 5 5]又要怎么写呢？
B=[C,A]
分给我吧。
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