Creating matrix from other matrix columns with loop?

2016 4 23
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更新时间：2016 4 23
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Hi all. I have data matrixes x(15x16) and y(15x16). And I want to create new matrix z(15x16) by taking some columns of x and y. For example, 3-4-5-10-12-14-16th columns will be taken from x and others from y. Is it possible with loop?

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Azzi Abdelmalek
Azzi Abdelmalek 2016-4-23
编辑：Azzi Abdelmalek 2016-4-23

0 个投票

You don't need a loop
out=y
idx=[3 4 5 10 12 14 16]
out(:,idx)=x

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jack star
jack star 2016-4-23
Tried it with these codes and It said: Subscripted assignment dimension mismatch.
y=zeros(15,16);
x=randn(15,16);
out=y
idx=[3 4 5 10 12 14 16]
out(:,idx)=x
Azzi Abdelmalek
Azzi Abdelmalek 2016-4-23
Yes, there is a mistake in the last line
y=zeros(15,16);
x=randn(15,16);
out=y
idx=[3 4 5 10 12 14 16]
out(:,idx)=x(:,idx)

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