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

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Nik Rocky
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?

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David Hill
David Hill 2020-6-16
sum(arrayfun(@(n)nnz(C{1,n}>0),2:5));
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