Matlab saying that cell is empty when it is not?

Question

Malyn Ellens 2019-4-22

回答： Alex Mcaulley 2019-4-22

I have a 2x1460 cell. I'm trying to pull out the data from the matrixes, which are each 1x4, in the second row of cells.

for i = 1460;

hours{i} = U{2,i}

hrs(i) = hours{i}(4);

end

% U is my 2x1460 cell.

When I run the code matlab returns:

hours =

1×1460 cell array

Columns 1 through 6

{0×0 double} {0×0 double} . . .Columns 1456 through 1460

{0×0 double} {0×0 double} {0×0 double} {0×0 double} {1×4 double}

where that last cell is correct.

This same code has worked before and I'm not sure what is going wrong here in particular. Any help is greatly appreciated!

Answer 1

Alex Mcaulley 2019-4-22

Your loop is not a loop in fact (it is only running for i = 1460, the last cell). Then you need:

for i = 1:1460;
    hours{i} = U{2,i}
    hrs(i) = hours{i}(4);
end