kronecker product for characters
in [Matlab]
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From: Juliette Salexa on 6 Apr 2010 16:14 I'd like to get the vector: ['0000' ; '0100' ; '1000' ; '1100'; '0001' ; '0101' ; '1001' ; '1101'; '0010' ; '0111' ; '1011' ; '1111'; '0011' ; '0111' ; '1011' ; '1111'] from: I0=['00' ;'01'; '10'; '11'] I0 = 00 01 10 11 It would be really nice if I could just do: kron(I0,I0)) But matlab's is multiplying the ascii values (or something like that) rather than concatenating the strings !! Is there a way to force the korneker product to work for my case ?
From: james bejon on 6 Apr 2010 17:08 I'm not quite seeing how the vector you've typed equates to kron(IO, IO). Have you mistyped something, or am I just failing to understand what a kronecker does? (Quite likely the latter, but could confirm?)
From: james bejon on 6 Apr 2010 17:15 Are you after something like a = {'00'; '01'; '10'; '11'} i = repmat(transpose(a), numel(a), 1); j = repmat(a, 1, numel(a)); k = arrayfun(@strcat, i, j, 'Uni', 0);
From: Juliette Salexa on 6 Apr 2010 17:29 "james bejon" <jamesbejon(a)yahoo.co.uk> wrote in message Thanks James, I realized I messed up that example: It should have been: ['0000' ; '0100' ; '1000' ; '1100'; '0001' ; '0101' ; '1001' ; '1101'; '0010' ; '0110' ; '1010' ; '1110'; '0011' ; '0111' ; '1011' ; '1111'] which should be kron(I0,I0), except, instead of multiplying the elements, I want to concatenate the strings. Your example with cell arrays was exactly what I want to do, but I was avoiding cell arrays because I don't want to get something like: k = {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} {1x1 cell} instead, I want to be able to see the entries all simultaneously and easily
From: Juliette Salexa on 6 Apr 2010 17:55
Okay, for i=1:4 for j=1:4 b{i,j}=cell2mat(k{i,j}); end; end; Did the trick for me. Thanks a lot for the code James! But if anyone knows how to do this with KRON, I'd be very eager to learn it! |