Binary String to ASCII

2012 10 23
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If I have a character array of binary numbers, representing the ASCII code of a text string, how do I convert those numbers back to the text representation? The character array is 35x1, which should result in 5 ascii characters. I tried:
ascii_msg_decoded=char(bin2dec(reshape(bin_msg,[],7)));
It does convert to ASCII, but the characters are not correct.

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Matt Fig
Matt Fig 2012-10-23
编辑：Matt Fig 2012-10-23

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How did you do it? This seems to work.
M = 'Hello';
% Now encode:
Mbinlong = reshape(dec2bin(double(M),7).',[],1)
% Now decode:
mess = char(bin2dec(reshape(Mbinlong,7,[]).').')

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Jared
Jared 2012-10-23
I assume you means numel(M)? That gave an error too, but I just replaced it with [] and it seems to work fine.
Jared
Jared 2012-10-23
I should also add, that this received bit stream will not be stored as a character array like Mbinlong is above. It will be, in the case of this example, a 1x35 cell. This code will work still, with the intermediate step of converting that 1x35 cell into the character array that looks like Mbinlong. How would I do that?
Matt Fig
Matt Fig 2012-10-23
Does each cell of the cell array have a message in it? If so, just access each cell one at a time.
M = {'Hello','Goodbye'};
% Now encode each message:
Mb = cellfun(@(x)reshape(dec2bin(x,7).',[],1),M,'Un',0);
% Now decode each message:
mess = cellfun(@(x)char(bin2dec(reshape(x,7,[]).').'),Mb,'Un',0)

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