All combination for a cell structure?

5 次查看（过去 30 天）
Xiaohan Du
Xiaohan Du 2016-9-26
评论： Andrei Bobrov 2016-9-26
Hi all,
I'd like to get all combinations for all elements in a cell structure. For example,
var = rand(20, 3);
no = 5;
numcell = mat2cell(var, size(var, 1)/no*ones(1, no), ones(1, 3));
result in a 5 by 3 cell 'numcell' which contains 4 by 1 double for each cell.
I'd like to find all combinations among 5 by 3 'numcell', performing the calculation numcell{:}*numcell{:}' for each cell element of numcell. So that I'll get all permutation and combination of numcell{i}'*numcell{j}.
Thanks!

请先登录，再回答此问题。

采纳的回答

Andrei Bobrov
Andrei Bobrov 2016-9-26
编辑：Andrei Bobrov 2016-9-26
I correctly understand:
out = cellfun(@(x)a(:).'*a(:),numcell);
  5 个评论
显示 3更早的评论
Stephen23
Stephen23 2016-9-26
编辑：Stephen23 2016-9-26
@Xiaohan Du: so what is the point in converting the data to a cell array, when the first step when performing this calculation is to get all the numeric arrays out of the cell array and concatenate them together?
Why bother with the cell array at all, when you don't use it for anything?
Andrei Bobrov
Andrei Bobrov 2016-9-26
I am agree with Stephen, just:
a = reshape(var,4,:);
M = a.'*a;

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Cell Arrays 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