How to count number of nonzero elements in part of cell arrays?

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Nik Rocky 2020-6-16

评论： Nik Rocky 2020-6-16

Hello,

I have a cell array C 1x5 cells with 1x3001 doubles

I want to count amount of elements bigger than zero in C{1,2}, C{1,3}, C{1,4} and C{1,5} (without C{1,1})

I can do:

numel(nonzeros(C{:,2})) + numel(nonzeros(C{:,3})) + .....

or in a loop:

for i = 2:5
    Badumpsss = Badumpsss+numel(nonzeros(C{:,i}));
end

But maybe there are better way?

David Hill 2020-6-16

sum(arrayfun(@(n)nnz(C{1,n}>0),2:5));

David Hill 2020-6-16

sum(arrayfun(@(n)nnz(C{1,n}>=0),2:5));

Nik Rocky 2020-6-16

Facepalm, thank you!

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