How to create a cell array of k similar objects in Matlab?

Question

I want to create an 1,k cell of m,m matrices. I have some trouble trying to initialize it. My first idea was to do this

myCell = cell{1,K};
for k = 1:K
  myCell{1,k} = eye(m);
end

But it seems like such ugly way to initialize it. There have to be a better way?

Jonas · Accepted Answer · 2010-05-30 18:32:20Z

5

A solution with even fewer function calls:

[myCell{1:k}] = deal(eye(m));

answered May 30, 2010 at 18:32

Jonas

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Comments

gnovice · Accepted Answer · 2010-05-30 19:53:52Z

3

Here's a very simple REPMAT solution:

myCell = repmat({eye(m)},1,K);

This simply creates one cell with eye(m) in it, then replicates that cell K times.

answered May 30, 2010 at 18:56

gnovice

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High Performance Mark · Accepted Answer · 2010-05-30 17:44:18Z

2

Try this:

myCell =  mat2cell(repmat(eye(m),[1 k]),[m],repmat(m,1,k))

answered May 30, 2010 at 17:44

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Amro · Accepted Answer · 2010-05-30 18:18:47Z

2

Consider this one:

myCell = arrayfun(@(x)eye(m), 1:k, 'UniformOutput',false)

answered May 30, 2010 at 18:18

Amro

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