How can I store binary strings into an array?

I have a character string that I converted into a ASCII format. But I don't know how will I put the individual numbers into an array. For example I have a character string that I've extracted in a text file (which contains 'dog' in this case). I converted it into ASCII using:

fid = fopen('sample.txt', 'r');

Data = fread(fid);

CharData = char(Data);

fclose(fid);

ascii = dec2bin(CharData)

this yielded:

ascii =

1100100

1101111

1100111

Now I want to store each binary per word into separate arrays which would look like this:

[1, 1, 0, 0, 1, 0, 0]

[1, 1, 0, 1, 1, 1, 1]

[1, 1, 0, 0, 1, 1, 1]

...or, if possible, each bit into a matrix

this will vary depending on the length of the string. But what happens is when I use the following code:

ascii = dec2bin(CharData);

out = str2num(ascii')'

It yields:

 out =  111   111     0    10   111    11    11

Answer 1

[Joseph Hall]

Use: dec2bin(CharData)=='1'

Here is an example:

binaryDataAsCharArray = dec2bin(randi(2^7-1,1,3),7)

binaryDataAsCharArray = 3×7 char array
    '1100110'
    '1011000'
    '0000001'

binaryDataAsLogicalArray = binaryDataAsCharArray=='1'

binaryDataAsLogicalArray = 3×7 logical array
   1   1   0   0   1   1   0
   1   0   1   1   0   0   0
   0   0   0   0   0   0   1

Answer 2

[Walter Roberson]

ascii = dec2bin(CharData, 8) - '0';

ascii_cell = num2cell(ascii, 2);
[d, o, g] = deal(ascii_cell{:});

However, what if the length of the string changes? Which variables should be used?

if length(CharData) == 1
  d = deal(ascii_cell{:});
elseif length(CharData) == 2
  [d, o] = deal(ascii_cell{:});
elseif length(CharData) == 3
  [d, o, g] = deal(ascii_cell{:});
elseif ....
end

This is clearly not good code, and clearly you would run out of variables.

Don't even think about dynamically creating new variable names according to the length. Just leave the data in the cell array (at most) or in the 2D numeric array (better)

If you want to reconstruct from a 2D numeric array like the one I construct above, then the technique is

reconstructed = bin2dec( char(ascii + '0') );

[Walter Roberson]

"...or, if possible, each bit into a matrix"

clearvars -regexp B_*
ascii = dec2bin(CharData, 8);
nrow = size(ascii, 1);
for K = 1 : nrow
  for C = 1 : 8
    thisvarname = sprintf('B_%d_%d', K, C);
    thisval = ascii(K,C);
    eval( [thisvarname, '=', thisval;] );
  end
end

Each bit will be placed into a separate matrix, such as B_1_3 and B_19_8 . Now what are you going to do with these separate matrices?