Elegant way to create dynamically an array inside a for loop ?

8 次查看（过去 30 天）

显示更早的评论

Stamatis Samaras 2014-12-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/166597-elegant-way-to-create-dynamically-an-array-inside-a-for-loop

评论： Stamatis Samaras 2014-12-14

采纳的回答： Azzi Abdelmalek

在 MATLAB Online 中打开

Check the following piece of code.

r = magic(5);
w = bartlett(5);
for j=1:10
    b1(j)=sum(r(1,:).*w'*j);
    b2(j)=sum(r(2,:).*w'*j);
    b3(j)=sum(r(3,:).*w'*j);
    b4(j)=sum(r(4,:).*w'*j);
    b5(j)=sum(r(5,:).*w'*j);
end
b = [b1;b2;b3;b4;b5];

each b1,b2,b3,b4,b5 is a vector of size 1x10 and the final result I am looking for is a vector b of size 5x10 .

I was wondering if there is a more robust way to create b rather than the paradigm above.

采纳的回答

Azzi Abdelmalek 2014-12-14

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/166597-elegant-way-to-create-dynamically-an-array-inside-a-for-loop#answer_162320

编辑：Azzi Abdelmalek 2014-12-14

在 MATLAB Online 中打开

d=sum(bsxfun(@times,repmat(bsxfun(@times,r',w)',1,1,10),reshape(1:10,1,1,[])),2)
b=d(:,:);

By splitting each function in different parts and then combining them the final result is the one I am looking for! I still dont get why my MATLAB version dont want to compile the whole thing but its ok! Anyway thanks a lot for you time and effort !

请先登录，再进行评论。