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arraysmatlaboctave
Harold Decapia
Harold Decapia

Reputation: 385

determine if array contains specific integer in octave

I have an array which looks like

test = {1,2,3};

I want to determine if an integer belongs in the array. I tried using ismember() and any() but they both return this:

binary operator '==' not implemented for 'cell' by 'scalar' operations

How will I do this? Thanks in advance

Upvotes: 7

Views: 11119

Answers (2)

Andy
Andy

Reputation: 8091

If you want to check if an integer exists in a matrix:

test = [1, 2, 3];
any (test == 2)
ans =  1

But in your question you use a cell array. In this case I would first convert it to a matrix, then do the same:

b = {1,2,3};
any (cell2mat (b) == 2)
ans =  1

Upvotes: 10

Gui Brunow
Gui Brunow

Reputation: 321

You're asking about checking if an array has a given integer but you're using a cell. They're quite different.

If you want to stick to cells you can iterate over it like so

test = {1, 2, 3};
number = 2;
hasNumber = false;
for i = 1:size(test,2)
  if(test{i} == number)
    hasNumber = true;
    break;
  end
end

For arrays, on the other hand, you could do just this, for example

test = [1, 2, 3];
number = 2;
hasNumber = ~isempty(test(test == number));

Upvotes: 2

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