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matrix index (I tried to name a matrix to use in a loop like variables.)

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Sakunrat Jaejaima
Sakunrat Jaejaima 2015-7-24
评论： Sakunrat Jaejaima 2015-7-24
I tried to name a matrix to use in a loop like variables.
forexample A(1)=[1 2;3 4]
A(2)=A(1)*2
A(3)=A(2)*2
.
.
.
A(j)=A(j-1)*2
But I can't use the notation A(j) in the loop. what should I call the j of A?

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2015-7-24
编辑：Azzi Abdelmalek 2015-7-24
You can use cell arrays
A=cell(1,4)
A{1}=[1 2;3 4]
for k=2:numel(A)
A{k}=A{k-1}*2
end
Andrei Bobrov
Andrei Bobrov 2015-7-24
A=[1 2;3 4];
jj=9;
A = bsxfun(@times,A,2.^reshape(0:jj-1,1,1,[]));

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