No, that code is going to give you the error
Error using cell
Not enough input arguments.
You need to pass at least one parameter to cell() such as
vect{cell(3,7),1}{1,1}=sum(vect{cell(3,7),1}{1,1})+occ_d;
This in turn would lead you to an error about trying to use a cell array as an index, but at least you would be past the initial error.
