Vectorizing this Operation

2011 8 20

1 个回答

更新时间：2021 8 20

2 次查看（30 天）

信息

此问题已关闭。请重新打开它进行编辑或回答。

0 个投票

I have list of random permutations of length 3: [1 0 0], [0 1 0], [0 0 1], [1 1 0], ...

I have matrix of random values from 1 to 6 of size m by n. Where each value indexes a permutation.

I want to obtain the m by 3*n matrix where each index is replaced by its corresponding permutation. Advice?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

Walter Roberson 2011-8-20

0 个投票

It will look something like

reshape(perms(pidx(:),:).',size(pidx,2)*size(perms,2),[]).'

but I didn't bother testing it out to be sure it gets everything in the right place (it's my bedtime.)

此问题已关闭。

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by