Remove negative values of elements in a cell array

Hi,

I have a large cell array and each element of the array has matrices of different sizes. Is there a way that I can remove negative values from the cell array, such that it only contains positive values?

I have a simple example here

a={[3,5,-1,4];[-6,7,12];[2,9,7,-4,-5,-6,8]};

How can I remove the negative numbers such that it becomes

a={[3,5,4];[7,12];[2,9,7,8]};

Thanks in advance.

Answer 1

[Guillaume]

 a = cellfun(@(v) v(v >= 0), a, 'UniformOutput', false);

Or use an explicit loop:

for idx = 1:numel(a)
    a{idx} = a{idx}(a{idx} >= 0);
end

[Benedict Low]

Thank you Guillaume. Perfect!