MATLAB: How to add one space to a matrix

binary operationsstring manipulation

am using this code to generate binary matrix dec2bin(rand(50,1)*2^32) but i need to add one space between the matrix element so i can use it for other commands. the output matrix needs space to be useful for other calculation. how to do this?

Best Answer

The following would work:

m =  dec2bin(rand(50,1)*2^32)
mwithspaces = cell2mat(regexprep(num2cell(m, 2),'\d(?=\d)', '$0 '));

I have to ask though, why do you want to do that? It seems like an unnecessary step. I would think that any algorithm that follows is probably going to remove these spaces one way or another.

edit: was missing a bracket

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MATLAB: How can i combine several matrix elements in one

The bigger question is why do you want to do this. I can't think of a single scenario where the representation you're asking would be useful.

In any case, it's not possible. A matrix in matlab is displayed as decimal numbers not binary. Furthermore, leading 0s are always omitted (since there's an infinity), so the closest you could do would be:

 B = [101 110 111];

which would contain the decimal numbers 100 (binary representation: 1100100), 110 (binary representation: 1101110), and 111 (binary representation: 110111). If that's what you want, then:

A = [0 1 0 1 0 1 1 0 0 1 1 1]
B = sum(reshape(A, 4, []) .* 10.^(3:-1:0)')  %in R2016b only

But as said, I don't see how that could be useful for anything. You certainly can't easily do any binary math on this, since the numbers are decimal.

Another option would be to convert to a string, which would allow the leading 0 (as a character)

A = [0 1 0 1 0 1 1 0 0 1 1 1]
B = cellstr(reshape(char(A + '0'), 4, []).').'

MATLAB: How do i prompt

Use the input command.

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MATLAB: How can i combine several matrix elements in one

MATLAB: How do i prompt

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