MATLAB: Compare elements of two cell vectors

cell arrayscompare

Hi,

I have two cell vectors of different lengths, containing both numbers and numbers/characters.

Now, I want to delete all elements of vector A, which are not in vector B.

Best, Chris

Best Answer

I found a solution.

First I converted all elements of both cell arrays to strings with this code I found:

numIndex = cellfun('isclass', B, 'double');
tmpStr = sprintf('%g;', B{numIndex});
B(numIndex) = dataread('string', tmpStr, '%s', 'delimiter', ';');

Then I compared the arrays with

ismember(A,B)

Thanks all anyway.

Related Solutions

MATLAB: Trasform to cell of strings

I already answered this in your earlier question. Your claimed that "I have tried your code but it continues to give me an error", but it turns out you did not even try it.

Your cell array contains multiple empty cells, and also cells that contain cells with non-scalar strings. In the general case it is not possible to convert a cell array with non-scalar string into a character array of the same size as the cell array. The only case where this conversion is guaranteed is if every string is scalar, which is not the case for your cell array.

>> postfix(cellfun(@isempty,postfix)) = {''};
>> out = reshape([postfix{:}],size(postfix));
>> size(out)
ans =
   137    25  
>> iscellstr(out)
ans =  1

Consider the example from my original answer: if you converted Y (a cell-array of strings) to a character array, what size would you expect it to be? Your requirement is that it should be the same size as X, but this is not possible:

 >> X = {{'A'},{'bb'};{'CCC'},{'d'}}
  X = 
      {1x1 cell}    {1x1 cell}
      {1x1 cell}    {1x1 cell}
  >> Y = reshape([X{:}],size(X))
  Y = 
      'A'      'bb'
      'CCC'    'd'
  >> char(Y)
  ans =
  A
  CCC
  bb
  d

MATLAB: Concatenate cell array into one string

x = {'a','b',5,[]}
x = cellfun(@num2str,x,'UniformOutput',false)
sprintf('%s ',x{:})

Best Answer

Related Solutions

MATLAB: Trasform to cell of strings

MATLAB: Concatenate cell array into one string

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