MATLAB: Sum of cell array columns

cell arraysMATLABsum

i am faced with a probelm of having a cell array of 7×50 size. where each cell consists of twenty rows and seven columns and I have to sum this cell array to recive a 7×50 output of 20 rows and one column each. this input cell array is titled as XX. 
%the XX is of the following size
20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double
20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double
20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double
20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double
20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double
20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double
20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double	20x7 double
%i want to convert it in to 
20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double
20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double
20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double
20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double
20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double
20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double	20x1 double
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Best Answer

Using cellfun, it is a one-liner.
XX % 7x50 cell array
XX_new = cellfun(@(x) {sum(x,2)}, XX);
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