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How to reshape two cell arrays of strings into a cell array of cell arrays

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Is there a neat way to vectorize the for-loop below?
n_nodes = 2^(20-1);
nodes = cellstr(dec2bin(0:n_nodes-1))';
suffixes = [nodes nodes];
row1 = suffixes(:,1:2:end);
row2 = suffixes(:,2:2:end);
edges = cell(1,n_nodes);
for i = 1:n_nodes
edges(i) = {[row1(i) row2(i)]};
end

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Accepted Answer

Star Strider
Star Strider on 4 Mar 2017
I did not time this with respect to your loop, so I don’t know if it’s faster:
edges = mat2cell([row1' row2'], ones(1,size(row1,2)), 2);
This creates a column vector of cells. Transpose it if you want a row vector of cells:
edges = mat2cell([row1' row2'], ones(1,size(row1,2)), 2)';

More Answers (1)

John BG
John BG on 4 Mar 2017
Hi Paolo
the following has the same size and type as the result of your for loop
A=reshape({row1{:} row2{:}},2,8);B=A'
B
=
'000' '010'
'100' '110'
'000' '010'
'100' '110'
'001' '011'
'101' '111'
'001' '011'
'101' '111'
whos('B')
Name Size Bytes Class Attributes
B 8x2 1888 cell
if you find this answer useful would you please be so kind to mark my answer as Accepted Answer?
To any other reader, please if you find this answer of any help solving your question,
please click on the thumbs-up vote link,
thanks in advance
John BG

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