How can i create N copies of a vector based on nonzero values in that vector?

2015 11 30
2 个回答
回答已采纳
更新时间：2015 11 30
5 次查看（30 天）

0 个投票

I have a vector 1x5 which contain NZ nonzero values, what can i do if i want to create N copies of that vector such that each copy contains only 1 nonzero value from NZ?
Original Vector [1 0 5 0 3]
Copy 1 [1 0 0 0 0] Copy 2 [0 0 5 0 0] Copy 3 [0 0 0 0 3]

请先登录，再回答此问题。

 采纳的回答

Jan
Jan 2015-11-30

0 个投票

v = [1 0 5 0 3];
Elem = unique(v(v~=0));
nElem = numel(Elem);
Result = cell(1, nElem);
for k = 1:nElem
Result{k} = v .* (v == Elem(k));
end

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

Mohab Mostafa
Mohab Mostafa 2015-11-30
编辑：Mohab Mostafa 2015-11-30
Great this is very good, what if i have a 64x1 vector and i want to have 4 nonzero in each copy (of course if there is a 27 nonzero values in the original vector, the last copy will contain only 3)

请先登录，再进行评论。

更多回答（1 个）

William
William 2015-11-30

0 个投票

not elegant but:
Original_Vector=[1 0 5 0 3];
Copy_1=Original_Vector;
Copy_1(3)=0;
Copy_1(5)=0;
etc..

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

Mohab Mostafa
Mohab Mostafa 2015-11-30
I was giving that vector as an example, i don't know the index of the nonzero values, and vector might be larger than that

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 Grid Lines, Tick Values, and Labels 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by