MATLAB: Error when using horzcat

kjetil87 amit

Hi for all…

i have error when using horzcat >>> i crate two vectors randomly ( count1=randi(0:1 ,[1,32]); ) and ( count2=randi(0:1 ,[1,32]); ) and i have this vector number ( d0 = dec2bin( 17623,15); ) the problem is : when i using horzcat ( count1,count2,d0) the result appear with some symbols

can anyone help me

Best Answer

The problem is that the output from dec2bin is a string, so horizcat considers everything a string. The ‘symbols’ you see are therefore ‘d0’. To see all of the variables as a string of [0 1] ‘bits’ (strings in this instance), use num2str:

count1=num2str(randi(0:1 ,[1,32]),'%d');
count2=num2str(randi(0:1 ,[1,32]),'%d');
d0 = dec2bin( 17623,15);
result = horzcat(count1,count2,d0)

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What about using fprintf to write to the command window?

[EDITED]

What about:

fmt = [repmat('%d ', 1, 31), '%d\r\n'];
fileID = fopen('output.txt','w')
fprintf(fileID, fmt, flipud(y'));
fclose(fileID);

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You could use mat2cell and sprintf like this:

T = [0,0,0,0,0,0,1,0,1,1,0,0,0,0,1,0,0,0,0,0,0,0,0,1,...
    0,1,0,1,1,1,0,0,0,0,0,0,0,0,0,1,1,1,0,0,1,1,0,0;...
    0,0,0,0,0,0,1,1,0,1,1,1,1,1,1,0,0,0,0,0,0,0,0,1,...
    1,1,0,0,0,1,1,0,0,0,0,0,0,0,1,1,0,1,0,0,0,0,0,0;...
    0,0,0,0,0,0,1,1,1,0,1,1,1,1,1,1,0,0,0,0,0,0,0,0,...
    1,1,0,0,1,1,0,1,0,0,0,0,0,0,0,1,1,0,1,1,1,0,1,0;...
    0,0,0,0,0,0,1,1,0,1,1,0,1,0,1,0,0,0,0,0,0,0,1,0,...
    0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,0,1,1,1,0,1,0,0,1;...
    0,0,0,0,0,0,1,0,1,1,1,0,1,0,1,1,0,0,0,0,0,0,0,0,...
    0,1,0,0,0,0,1,1,0,0,0,0,0,0,1,0,1,0,0,0,0,1,0,1];
S = size(T);
X = mat2cell(T,ones(1,S(1)),16*ones(1,S(2)/16));
Y = cellfun(@(v)sprintf('%i',v), X, 'UniformOutput',false);

Which produces two useful cell arrays:

>> X
X = 
  [1x16 double]    [1x16 double]    [1x16 double]
  [1x16 double]    [1x16 double]    [1x16 double]
  [1x16 double]    [1x16 double]    [1x16 double]
  [1x16 double]    [1x16 double]    [1x16 double]
  [1x16 double]    [1x16 double]    [1x16 double]
>> Y
Y = 
  '0000001011000010'    '0000000101011100'    '0000000111001100'
  '0000001101111110'    '0000000111000110'    '0000001101000000'
  '0000001110111111'    '0000000011001101'    '0000000110111010'
  '0000001101101010'    '0000001000011000'    '0000001011101001'
  '0000001011101011'    '0000000001000011'    '0000001010000101'

Best Answer

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